Live/247 Rank/New Hampshire

New Hampshire 24/7 Rank

Every station in New Hampshire ranked by its 247 score out of 100: how reliably it reports, how accurate its readings are against a reference station, how they pass their checks and how they stand against the forecast, over the last seven days.

385 stations ranked29.6% sent every report dueranked October 16, 2026page 1 of 2New Hampshire instrumentsNew Hampshire weather

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. Of the 385 ranked here, 383 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every ranked station, first to last

1stLast

Each rank wears its colour: first in its state in bright green, last in deep red, and every rank between mixed along the band.

How they reported this week

The days behind it

7 days30 days 90 days

every report90 to 99%under 90%

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
1	Keene/Dillant(AWOS)EEN	98.8	Airport	Cheshire	100%	168 of 168	5 min	60 min
2	Jaffrey MunicipalAFN	98.8	Airport	Cheshire	99.4%	167 of 168	9 min	2 h
3	LaconiaLCI	98.4	Airport	Belknap	100%	168 of 168	5 min	60 min
4	Rochester (Was 6B1)DAW	98.0	Airport	York	100%	168 of 168	10 min	65 min
5	Lebanon MunicipalLEB	97.4	Airport	Grafton	100%	168 of 168	8 min	60 min
6	New LondonNLNN3	97.4	Cooperative	Merrimack	100%	7 of 7	5 min	24 h
7	North ConwayNCON3	97.4	Cooperative	Carroll	100%	7 of 7	17 min	25 h
8	BerlinBRLN3	97.4	Cooperative	Coos	100%	7 of 7	21 min	24.1 h
9	East SandwichESDN3	97.4	Cooperative	Carroll	100%	7 of 7	25 min	24 h
10	Center Sandwich 4.9 ENH-CR-26	97.4	Volunteer	Carroll	100%	7 of 7	26 min	24 h
10	New London 0.8 SNH-MR-70	97.4	Volunteer	Merrimack	100%	7 of 7	26 min	24 h
12	Lancaster 0.5 NNH-CS-7	97.4	Volunteer	Coos	100%	7 of 7	26 min	24 h
13	Thornton 4.1 ENENH-GR-77	97.4	Volunteer	Grafton	100%	7 of 7	26 min	24 h
13	Chichester 2.7 SSWNH-MR-25	97.4	Volunteer	Merrimack	100%	7 of 7	26 min	24 h
13	Concord 2.3 ENH-MR-71	97.4	Volunteer	Merrimack	100%	7 of 7	26 min	24 h
16	West Chesterfield 0.3 WNWNH-CH-2	97.4	Volunteer	Cheshire	100%	7 of 7	26 min	24 h
16	Keene 2.5 NNWNH-CH-24	97.4	Volunteer	Cheshire	100%	7 of 7	26 min	24 h
16	Bristol 0.4 SSENH-GR-1	97.4	Volunteer	Grafton	100%	7 of 7	26 min	24 h
19	Temple 1.2 ENENH-HL-103	97.4	Volunteer	Hillsborough	100%	7 of 7	26 min	24 h
19	Dunbarton 1.1 SNH-MR-77	97.4	Volunteer	Merrimack	100%	7 of 7	26 min	24 h
21	Brookfield 0.9 WSWNH-CR-3	97.4	Volunteer	Carroll	100%	7 of 7	26 min	26 h
22	West HampsteadHMPN3	97.4	Cooperative	Rockingham	100%	7 of 7	40 min	25.7 h
23	NashuaZBWN3	97.4	Cooperative	Hillsborough	100%	7 of 7	85 min	24.2 h
24	Ashland 2.4 NNWNH-GR-46	97.4	Volunteer	Grafton	100%	7 of 7	85 min	24 h
25	Auburn 0.1 SENH-RC-108	97.4	Volunteer	Rockingham	100%	7 of 7	86 min	24 h
26	Laconia 2.8 SNH-BK-10	97.4	Volunteer	Belknap	100%	7 of 7	86 min	25 h
27	Bow 1.6 NWNH-MR-4	97.4	Volunteer	Merrimack	100%	7 of 7	86 min	25 h
27	Canterbury 2.5 SSWNH-MR-55	97.4	Volunteer	Merrimack	100%	7 of 7	86 min	25 h
29	Hinsdale 2.5 NNWNH-CH-31	97.4	Volunteer	Cheshire	100%	7 of 7	86 min	26 h
30	Nottingham 1.2 SNH-RC-79	97.4	Volunteer	Rockingham	100%	7 of 7	86 min	24 h
30	Rochester 3.4 ENENH-ST-55	97.4	Volunteer	Strafford	100%	7 of 7	86 min	24 h
32	Tilton Northfield 3.3 NENH-BK-1	97.4	Volunteer	Belknap	100%	7 of 7	86 min	24 h
32	Keene 2.0 SENH-CH-21	97.4	Volunteer	Cheshire	100%	7 of 7	86 min	24 h
32	North Conway 1.4 SSWNH-CR-11	97.4	Volunteer	Carroll	100%	7 of 7	86 min	24 h
32	Exeter 0.8 SWNH-RC-3	97.4	Volunteer	Rockingham	100%	7 of 7	86 min	24 h
32	Rollinsford 2.0 WSWNH-ST-37	97.4	Volunteer	Strafford	100%	7 of 7	86 min	24 h
37	New Hampton 4.1 NNH-BK-18	97.4	Volunteer	Belknap	100%	7 of 7	86 min	25 h
37	Meredith 2.9 SSWNH-BK-9	97.4	Volunteer	Belknap	100%	7 of 7	86 min	25 h
37	Brookline 2.3 SWNH-HL-100	97.4	Volunteer	Hillsborough	100%	7 of 7	86 min	25 h
37	Northfield 2.8 ENH-MR-45	97.4	Volunteer	Merrimack	100%	7 of 7	86 min	25 h
41	Manchester 0.6 SNH-HL-96	97.4	Volunteer	Hillsborough	100%	7 of 7	86 min	26 h
41	Barrington 3.2 ENH-ST-40	97.4	Volunteer	Strafford	100%	7 of 7	86 min	26 h
43	Meredith 3.3 NNENH-BK-26	97.4	Volunteer	Belknap	100%	7 of 7	86 min	24 h
44	Littleton 7.3 WNH-GR-47	97.4	Volunteer	Grafton	100%	7 of 7	86 min	24 h
44	New Durham 2.5 ENH-ST-50	97.4	Volunteer	Strafford	100%	7 of 7	86 min	24 h
46	Campton 1.6 SSENH-GR-51	97.4	Volunteer	Grafton	100%	7 of 7	86 min	25 h
47	Tamworth 0.4 NNWNH-CR-27	97.4	Volunteer	Carroll	100%	7 of 7	86 min	24 h
47	Carroll 4.6 NENH-CS-19	97.4	Volunteer	Coos	100%	7 of 7	86 min	24 h
49	Weare 4.3 SNH-HL-77	97.4	Volunteer	Hillsborough	100%	7 of 7	86 min	25 h
49	Contoocook 0.6 NWNH-MR-68	97.4	Volunteer	Merrimack	100%	7 of 7	86 min	25 h
49	Hooksett 5.3 SSENH-MR-86	97.4	Volunteer	Merrimack	100%	7 of 7	86 min	25 h
52	Brookline 1.7 NNENH-HL-120	97.4	Volunteer	Hillsborough	100%	7 of 7	86 min	24 h
53	East MilfordEMLN3	97.4	Cooperative	Hillsborough	100%	7 of 7	1.5 h	24 h
54	EppingEPPN3	97.4	Cooperative	Rockingham	100%	7 of 7	1.6 h	24 h
55	Tamworth 4TMWN3	97.4	Cooperative	Carroll	100%	7 of 7	1.6 h	24 h
56	JeffersonJEFN3	97.4	Cooperative	Coos	100%	7 of 7	1.6 h	24 h
57	SOUN3SOUN3	97.4	DCP	-	100%	7 of 7	1.9 h	24 h
58	Dam WithinPTBN3	97.4	Cooperative	Coos	100%	7 of 7	2.1 h	24 h
59	First Connecticut LakeFCLN3	97.4	Cooperative	Coos	100%	7 of 7	2.4 h	24 h
59	Gorham AirportGHNN3	97.4	Cooperative	Coos	100%	7 of 7	2.4 h	24 h
59	LincolnLICN3	97.4	Cooperative	Grafton	100%	7 of 7	2.4 h	24 h
59	OUTSIDE & NW OF P.O @ PENNACOOK NHSLSN3	97.4	Cooperative	Merrimack	100%	7 of 7	2.4 h	24 h
63	Stratham 1.9 ESENH-RC-24	97.4	Volunteer	Rockingham	100%	7 of 7	2.4 h	24 h
64	Chichester 1.2 WNH-MR-76	97.4	Volunteer	Merrimack	100%	7 of 7	2.4 h	24 h
65	Keene 1.9 SENH-CH-26	97.4	Volunteer	Cheshire	100%	7 of 7	2.4 h	24 h
65	Dunbarton 3.8 SENH-MR-47	97.4	Volunteer	Merrimack	100%	7 of 7	2.4 h	24 h
67	Wolfeboro 1.5 SENH-CR-50	97.4	Volunteer	Carroll	100%	7 of 7	2.4 h	24 h
68	North Conway 1.8 SSENH-CR-46	97.4	Volunteer	Carroll	100%	7 of 7	2.4 h	24 h
69	ManchesterMNCN3	97.4	Cooperative	Hillsborough	100%	7 of 7	-	24 h
70	Epsom - Northwood LakeNWLN3	97.3	Gauge	Merrimack	100%	168 of 168	12 min	60 min
71	Shannon BrookSHAN3	97.2	Gauge	Carroll	100%	168 of 168	12 min	60 min
72	Jaffrey AirparkJAPN3	97.1	Cooperative	Cheshire	100%	7 of 7	3 h	24 h
73	Berlin MunicipalBML	97.0	Airport	Coos	100%	168 of 168	9 min	60 min
74	Amherst 3.7 NNENH-HL-25	96.9	Volunteer	Hillsborough	100%	7 of 7	3.4 h	24 h
75	Concord MunicipalCON	96.7	Airport	Hillsborough	99.4%	167 of 168	10 min	1.5 h
76	Pease AFB/PortsmoutPSM	96.6	Airport	York	100%	168 of 168	16 min	70 min
77	Stoddard - Highland LakeHLLN3	96.6	Gauge	Cheshire	98.8%	166 of 168	12 min	1.8 h
77	Freedom - Ossippee DamOSDN3	96.6	Gauge	Carroll	98.8%	166 of 168	12 min	1.8 h
77	Nottingham - Pawtuckaway LakePAWN3	96.6	Gauge	Rockingham	98.8%	166 of 168	12 min	1.8 h
77	Poorfarm BrookPOON3	96.6	Gauge	Belknap	98.8%	166 of 168	12 min	1.8 h
77	Squam RiverSQAN3	96.6	Gauge	Grafton	98.8%	166 of 168	12 min	1.8 h
82	Canaan - Goose PondGOPN3	96.6	Gauge	Grafton	98.8%	166 of 168	12 min	2 h
82	Pittsburg - Lake FrancisLKFN3	96.6	Gauge	Coos	98.8%	166 of 168	12 min	2 h
82	Squam LakeSQLN3	96.6	Gauge	Grafton	98.8%	166 of 168	12 min	2 h
85	Epping 2.0 NNENH-RC-101	96.5	Volunteer	Rockingham	100%	7 of 7	4.4 h	24 h
86	Madison - Pequawket Pond DamPEQN3	96.4	Gauge	Carroll	100%	168 of 168	12 min	60 min
87	Otter Brook At KeeneOTRN3	96.2	Gauge	Cheshire	100%	168 of 168	17 min	1.5 h
88	Ashuelot River 5 NNW Surry Mt DamKENN3	96.2	Gauge	Cheshire	100%	168 of 168	17 min	60 min
89	Ammonoosuc River AT BethlehemBETN3	96.2	Gauge	Grafton	100%	168 of 168	17 min	1.5 h
90	White Mountain Nf Near ConwayCWYN3	96.1	Gauge	Carroll	100%	168 of 168	14 min	60 min
91	Waterville ValleyWVVN3	96.1	Gauge	Grafton	100%	168 of 168	17 min	75 min
92	Mascoma River At West CanaanWCNN3	96.1	Gauge	Grafton	99.4%	167 of 168	17 min	2 h
93	North Haverhill 2.9 ENH-GR-69	96.0	Volunteer	Grafton	100%	7 of 7	5.4 h	24 h
94	OUTSIDE & NW OF P.O @ PENNACOOK NHSLSN3	96.0	Gauge	Merrimack	99.4%	167 of 168	17 min	1.8 h
95	Lincoln NEPPLICN3	95.9	Gauge	Grafton	99.4%	167 of 168	17 min	2 h
96	Upper Ammonoosuc Rvr Nr GrovetonGRUN3	95.9	Gauge	Coos	99.4%	167 of 168	17 min	2 h
96	Oyster River At DurhamOYSN3	95.9	Gauge	Strafford	99.4%	167 of 168	17 min	2 h
96	SandownSANN3	95.9	Gauge	Rockingham	99.4%	167 of 168	17 min	2 h
99	Lake SunapeeLKSN3	95.9	Gauge	Sullivan	99.4%	167 of 168	17 min	2 h
100	Bearcamp River 1 E South TamworthBCPN3	95.8	Gauge	Carroll	99.4%	167 of 168	17 min	2 h
101	Ashuelot RiverGILN3	95.8	Gauge	Cheshire	98.8%	166 of 168	17 min	2 h
102	Lake Winnipesaukee OutletLAKN3	95.7	Gauge	Belknap	99.4%	167 of 168	17 min	2 h
103	Lancaster RAWSLNCN3	95.7	Gauge	Coos	99.4%	167 of 168	18 min	2 h
104	Suncook River AT North ChichesterNCHN3	95.7	Gauge	Merrimack	98.2%	165 of 168	12 min	2 h
105	Kingman Farm At MadburyKINN3	95.6	Gauge	Strafford	100%	168 of 168	20 min	65 min
106	Lake Winnipesaukee At Weirs BeachWEIN3	95.6	Gauge	Belknap	99.4%	167 of 168	17 min	2 h
107	First Connecticut LakeFCLN3	95.6	Gauge	Coos	98.8%	166 of 168	17 min	1.7 h
108	Connecticut River 1 W DaltonDLTN3	95.4	Gauge	Coos	100%	168 of 168	20 min	60 min
109	Nerrs Water Quality Site At Great Bay Near DurhamGBQN3	95.4	Gauge	Strafford	98.2%	165 of 168	17 min	2 h
110	Winnicut River At GreenlandWINN3	95.4	Gauge	Rockingham	98.2%	165 of 168	17 min	2 h
111	Thompson Farm At DurhamTHON3	95.3	Gauge	Strafford	100%	168 of 168	20 min	65 min
112	Ashuelot River At West SwanzeySWAN3	95.3	Gauge	Cheshire	100%	168 of 168	22 min	80 min
113	Newfound RiverBRTN3	95.2	Gauge	Grafton	99.4%	167 of 168	17 min	2 h
114	Connecticut River AT North StratfordNSTN3	95.2	Gauge	Coos	99.4%	167 of 168	20 min	2 h
114	Connecticut River 3 SW PittsburgPTSN3	95.2	Gauge	Coos	99.4%	167 of 168	20 min	2 h
116	Cockermouth River Below Hardy Brook At GrotonGRTN3	95.2	Gauge	Grafton	97.6%	164 of 168	17 min	2 h
117	Ashuelot River At HinsdaleHDLN3	95.1	Gauge	Cheshire	100%	168 of 168	22 min	80 min
117	Lamprey River At RaymondRAYN3	95.1	Gauge	Rockingham	100%	168 of 168	22 min	80 min
119	Rindge 3.2 ESENH-CH-20	95.1	Volunteer	Cheshire	100%	7 of 7	7.4 h	25 h
120	Gorham - Peabody RiverPEAN3	95.0	Gauge	Coos	98.9%	665 of 672	20 min	45 min
121	Diamond River 2 N Wentworth LocationDIAN3	94.9	Gauge	Coos	99.4%	167 of 168	22 min	2 h
121	Androscoggin River AT GorhamGRMN3	94.9	Gauge	Coos	99.4%	167 of 168	22 min	2 h
121	E. Brch Pemigewasset At LincolnLINN3	94.9	Gauge	Grafton	99.4%	167 of 168	22 min	2 h
124	Cold River At AlsteadASTN3	94.9	Gauge	Cheshire	99.4%	167 of 168	22 min	2 h
125	Exeter River At ExeterEXTN3	94.8	Gauge	Rockingham	98.8%	166 of 168	22 min	2 h
126	CambridgeCMBN3	94.7	Gauge	Coos	97.6%	656 of 672	15 min	60 min
127	Souhegan River At MilfordMFDN3	94.6	Gauge	Hillsborough	98.8%	166 of 168	22 min	2 h
128	Lamprey River 2 NW NewmarketLAMN3	94.6	Gauge	Strafford	98.8%	166 of 168	22 min	2 h
128	Beaver Brook At North PelhamNPEN3	94.6	Gauge	Hillsborough	98.8%	166 of 168	22 min	2 h
130	MERRIMACK RIVER AT NashuaNSHN3	94.4	Gauge	Hillsborough	98.2%	165 of 168	22 min	3 h
131	Androscoggin River At ErrolERRN3	94.4	Gauge	Coos	97.1%	653 of 672	17 min	60 min
132	Pemigewasset River At Franklin Falls DamFFDN3	94.3	Gauge	Merrimack	100%	168 of 168	27 min	1.5 h
133	CONNECTICUT RIVER AT North WalpoleWLPN3	94.1	Gauge	Cheshire	100%	168 of 168	27 min	76 min
134	Blackwater River At Blackwater DamBIKN3	94.1	Gauge	Merrimack	100%	168 of 168	27 min	76 min
134	SOUHEGAN RIVER AT MerrimackSOHN3	94.1	Gauge	Hillsborough	100%	168 of 168	27 min	76 min
136	Winnipesau River At TiltonTLTN3	94.1	Gauge	Belknap	100%	168 of 168	27 min	75 min
137	Contoocook River At West HopkintonCOTN3	94.1	Gauge	Merrimack	100%	168 of 168	27 min	65 min
137	Sunapee - Sugar RiverSCFN3	94.1	Gauge	Sullivan	100%	168 of 168	27 min	65 min
139	Coheco River Near RochesterCOCN3	94.1	Gauge	Strafford	98.2%	165 of 168	17 min	2 h
140	Lake WinnisquamLKWN3	93.9	Gauge	Belknap	99.4%	167 of 168	17 min	2 h
141	Merrimack River AT Franklin JunctionFRJN3	93.9	Gauge	Merrimack	99.4%	167 of 168	27 min	2 h
141	Blackwater River 3 SE WebsterWBSN3	93.9	Gauge	Merrimack	99.4%	167 of 168	27 min	2 h
143	Contoocook River 3 SW HennikerHENN3	93.9	Gauge	Merrimack	99.4%	167 of 168	27 min	2 h
144	PISCATAQUOG RIVER AT GoffstownGFFN3	93.9	Gauge	Hillsborough	99.4%	167 of 168	27 min	1.8 h
145	Smith River 2 SW BristolBRSN3	93.9	Gauge	Grafton	99.4%	167 of 168	27 min	2 h
145	Pemigewasset River AT PlymouthPLMN3	93.9	Gauge	Grafton	99.4%	167 of 168	27 min	2 h
145	Baker River 2 SW RumneyRUMN3	93.9	Gauge	Grafton	99.4%	167 of 168	27 min	2 h
145	Contoocook River At River HillRVHN3	93.9	Gauge	Merrimack	99.4%	167 of 168	27 min	2 h
145	Connecticut River AT West LebanonWLBN3	93.9	Gauge	Grafton	99.4%	167 of 168	27 min	2 h
145	Pemigewasset River AT WoodstockWOON3	93.9	Gauge	Grafton	99.4%	167 of 168	27 min	2 h
151	Merrimack River AT ConcordCONN3	93.9	Gauge	Merrimack	99.4%	167 of 168	27 min	2 h
151	Warner River AT DavisvilleDAVN3	93.9	Gauge	Merrimack	99.4%	167 of 168	27 min	2 h
151	MERRIMACK RIVER AT Goffs FallsGOFN3	93.9	Gauge	Hillsborough	99.4%	167 of 168	27 min	2 h
151	CONTOOCOOK RIVER AT PeterboroughPTRN3	93.9	Gauge	Hillsborough	99.4%	167 of 168	27 min	2 h
151	Sugar River AT West ClaremontWCLN3	93.9	Gauge	Sullivan	99.4%	167 of 168	27 min	2 h
156	Ashuelot River At KeeneKNEN3	93.8	Gauge	Cheshire	99.4%	167 of 168	27 min	2 h
157	Littleton - Comerford ResCFDN3	93.8	Gauge	Grafton	98.1%	162 of 165	25 min	2 h
158	PittsfieldPTFN3	93.7	Gauge	Merrimack	100%	168 of 168	29 min	75 min
159	Pembroke - Bear BrookBERN3	93.7	Gauge	Merrimack	99.4%	167 of 168	19 min	2 h
160	Gorham AirportGHNN3	93.6	Gauge	Coos	99.4%	167 of 168	17 min	2 h
161	Horace LakeHRLN3	93.5	Gauge	Hillsborough	100%	168 of 168	29 min	75 min
161	Freedom - Ossipee LakeOSLN3	93.5	Gauge	Carroll	100%	168 of 168	29 min	75 min
161	East KingstonPWPN3	93.5	Gauge	Rockingham	100%	168 of 168	29 min	75 min
164	Spicket River At North SalemNSLN3	93.4	Gauge	Rockingham	98.2%	165 of 168	27 min	2 h
165	Errol Airport NEPPERAN3	93.4	Gauge	Coos	91.6%	154 of 168	17 min	3 h
166	Tilton - Silver LakeSLVN3	93.1	Gauge	Belknap	100%	168 of 168	29 min	75 min
167	Deering ResDRRN3	93.1	Gauge	Hillsborough	98.8%	166 of 168	29 min	1.8 h
168	Barrington - Mendums PondMENN3	93.0	Gauge	Rockingham	100%	168 of 168	29 min	76 min
169	Stoddard - Island PondILPN3	92.9	Gauge	Cheshire	100%	168 of 168	12 min	60 min
170	Swift River Near ConwayALBN3	92.9	Gauge	Carroll	99.4%	167 of 168	32 min	2 h
171	Alton - Sunset LakeSSLN3	92.7	Gauge	Belknap	97.6%	164 of 168	29 min	2 h
172	HanoverHANN3	92.4	Cooperative	Grafton	85.7%	6 of 7	20 min	26.9 h
173	Keene 1.3 SWNH-CH-27	92.4	Volunteer	Cheshire	85.7%	6 of 7	26 min	2 days
173	Lyman 1.7 NNWNH-GR-72	92.4	Volunteer	Grafton	85.7%	6 of 7	26 min	2 days
175	Winnipesaukee River At Lakeport 2LKPN3	92.4	Cooperative	Belknap	85.7%	6 of 7	45 min	39.1 h
176	Bretton Woods 3SECAWN3	92.4	Cooperative	Coos	85.7%	6 of 7	52 min	47 h
177	Walpole 5.3 SENH-CH-33	92.4	Volunteer	Cheshire	85.7%	6 of 7	86 min	25 h
177	Gorham 1.0 ESENH-CS-21	92.4	Volunteer	Coos	85.7%	6 of 7	86 min	25 h
177	Henniker 1.4 NNENH-MR-82	92.4	Volunteer	Merrimack	85.7%	6 of 7	86 min	25 h
180	Epsom 3.2 SSWNH-MR-65	92.4	Volunteer	Merrimack	85.7%	6 of 7	86 min	37.1 h
181	Keene 1.2 SWNH-CH-32	92.4	Volunteer	Cheshire	85.7%	6 of 7	86 min	34.1 h
182	Jackson 3.7 NWNH-CR-15	92.4	Volunteer	Carroll	85.7%	6 of 7	86 min	37.1 h
183	Wakefield 6.0 NNWNH-CR-34	92.4	Volunteer	Carroll	85.7%	6 of 7	86 min	24 h
184	Hanover 4.8 NENH-GR-52	92.4	Volunteer	Grafton	85.7%	6 of 7	86 min	37.1 h
185	Epsom 4.2 SWNH-MR-74	92.4	Volunteer	Merrimack	85.7%	6 of 7	86 min	2 days
185	Strafford 2.9 NNH-ST-31	92.4	Volunteer	Strafford	85.7%	6 of 7	86 min	2 days
187	South Sutton 1.3 SENH-MR-60	92.4	Volunteer	Merrimack	85.7%	6 of 7	86 min	36.1 h
188	Randpolph - Gray KnobGKBN3	92.4	Cooperative	Coos	85.7%	6 of 7	1.7 h	2 days
189	NorthwoodNORN3	92.4	Gauge	Rockingham	85.7%	6 of 7	1.9 h	2 days
190	Cornish 1.1 ENENH-SL-15	92.4	Volunteer	Sullivan	85.7%	6 of 7	2.4 h	37.1 h
191	Grafton - Moore ResMORN3	92.2	Gauge	Grafton	90.1%	174 of 193	19 min	1.9 h
192	Monroe - McIndoes DamMCIN3	92.1	Gauge	Grafton	89.0%	179 of 201	18 min	1.8 h
193	Everett LakeWERN3	92.0	Gauge	Hillsborough	94.3%	317 of 336	27 min	60 min
194	Saco River AT ConwayCNWN3	91.9	Gauge	Carroll	100%	168 of 168	22 min	80 min
195	Macdowell DamMACN3	91.9	Gauge	Hillsborough	100%	168 of 168	27 min	66 min
196	Dorchester - Baker Flood Control 8BEIN3	91.9	Gauge	Grafton	100%	168 of 168	27 min	65 min
197	Sunapee 2.3 NNH-SL-8	91.9	Volunteer	Sullivan	85.7%	6 of 7	3.4 h	36.1 h
198	Seabrook 0.5 NNH-RC-106	91.4	Volunteer	Rockingham	85.7%	6 of 7	4.4 h	37.1 h
199	Middleton 0.7 WSWNH-ST-60	91.4	Volunteer	Strafford	85.7%	6 of 7	4.4 h	36.1 h
200	Epping 0.9 WNH-RC-99	91.0	Volunteer	Rockingham	85.7%	6 of 7	5.4 h	2 days
201	Contoocook River At Hopkinton LakeWHKN3	90.9	Gauge	Merrimack	91.0%	306 of 336	27 min	60 min
202	LyndeboroughLYNN3	90.7	Gauge	Hillsborough	100%	168 of 168	27 min	65 min
203	Great Bay At DurhamBGXN3	90.7	Gauge	Rockingham	97.6%	164 of 168	32 min	2 h
204	Hubbard BrookS2069	90.4	Soil	Grafton	98.8%	166 of 168	43 min	2 h
205	Mascoma RiverS2043	90.2	Soil	Grafton	99.4%	167 of 168	45 min	2 h
206	Durham 2 N54794	90.1	Reference	Strafford	100%	84 of 84	1.5 h	3.1 h
207	Durham 2 SSW54795	90.1	Reference	Strafford	100%	84 of 84	1.5 h	3.1 h
208	Greenville 1.1 ENENH-HL-48	89.6	Volunteer	Hillsborough	85.7%	6 of 7	8.4 h	36.1 h
209	Isinglass River At DoverISIN3	89.2	Gauge	Strafford	99.4%	167 of 168	22 min	2 h
210	North Hampton 1.4 ESENH-RC-84	89.1	Volunteer	Rockingham	85.7%	6 of 7	9.4 h	2 days
211	Nashua/Boire FieldASH	88.7	Airport	Hillsborough	100%	168 of 168	5 min	60 min
212	Mascoma River ScanMSRN3	88.7	Gauge	Grafton	98.8%	166 of 168	37 min	3 h
213	Northfield 3.1 SWNH-MR-80	88.7	Volunteer	Merrimack	85.7%	6 of 7	10.4 h	36.1 h
214	Second Connecticut LakeSECN3	88.0	Gauge	Coos	82.5%	185 of 224	27 min	2 h
215	Eaton Center 1.6 SSENH-CR-53	87.7	Volunteer	Carroll	85.7%	6 of 7	12.4 h	37.1 h
216	Plymouth1P1	87.4	Airport	Grafton	89.6%	452 of 504	6 min	2.7 h
217	Franconia 2.7 SSWNH-GR-73	87.4	Volunteer	Grafton	71.4%	5 of 7	26 min	37.1 h
218	Plymouth 1.6 NNENH-GR-11	87.4	Volunteer	Grafton	71.4%	5 of 7	26 min	2 days
219	Concord 3.8 SSENH-MR-9	87.4	Volunteer	Merrimack	71.4%	5 of 7	26 min	2.5 days
220	Belmont 1.7 SWNH-BK-2	87.4	Volunteer	Belknap	71.4%	5 of 7	26 min	3 days
220	Hampton Falls 1.8 NWNH-RC-89	87.4	Volunteer	Rockingham	71.4%	5 of 7	26 min	3 days
222	WolfeburroWOLN3	87.4	Cooperative	Carroll	71.4%	5 of 7	55 min	3 days
223	Raymond 1.2 SWNH-RC-102	87.4	Volunteer	Rockingham	71.4%	5 of 7	86 min	2 days
224	Dover 2.5 NNH-ST-14	87.4	Volunteer	Strafford	71.4%	5 of 7	86 min	24 h
225	Brookline 2.3 SWNH-HL-19	87.4	Volunteer	Hillsborough	71.4%	5 of 7	2.4 h	2 days
226	Northwood 2.9 WSWNH-RC-48	87.4	Volunteer	Rockingham	71.4%	5 of 7	2.4 h	2 days
227	Albany 2.8 SWNH-CR-41	86.9	Volunteer	Carroll	71.4%	5 of 7	3.4 h	3 days
228	Salisbury 5.0 SWNH-MR-72	85.5	Volunteer	Merrimack	71.4%	5 of 7	6.4 h	2 days
229	Citizen station FW6376FW6376	84.7	Citizen	Grafton	67.2%	113 of 168	18 s	4.8 h
230	Hubbard Brook ScanHUBN3	84.2	Gauge	Grafton	98.8%	166 of 168	37 min	3 h
231	Keene 6.8 WNH-CH-29	83.7	Volunteer	Cheshire	71.4%	5 of 7	10.4 h	2 days
232	Citizen station LSPLSP	83.7	Citizen	Belknap	65.8%	112 of 170	17 s	5.5 h
233	Rt-102 MaidstoneVTMDS	83.5	Road	Coos	76.7%	774 of 1,008	15 min	2.3 h
234	I-91 Brattleboro BridgeVTBRB	83.4	Road	Cheshire	76.5%	772 of 1,008	15 min	2.3 h
235	Citizen station DW3142DW3142	83.4	Citizen	Merrimack	64.2%	108 of 168	18 s	5.3 h
236	Citizen station DW4640DW4640	82.5	Citizen	Strafford	61.9%	104 of 168	18 s	5.3 h
237	Pinkham NotchGHMN3	82.4	Cooperative	Coos	57.1%	4 of 7	20 min	24 h
238	Derry 5.7 NNH-RC-72	82.4	Volunteer	Rockingham	57.1%	4 of 7	26 min	3 days
239	EPPN3EPPN3	82.4	DCP	-	57.1%	4 of 7	1.6 h	2 days
240	Citizen station FW0320FW0320	81.9	Citizen	Rockingham	60.1%	101 of 168	20 s	5.3 h
241	Bristol 1.7 NNH-GR-79	81.8	Volunteer	Grafton	57.1%	4 of 7	86 min	3.5 days
242	Citizen station WQ2HWQ2H	81.7	Citizen	Cheshire	61.9%	104 of 168	19 s	4.5 h
243	Holderness 5WNWHDEN3	81.7	Gauge	Grafton	57.1%	4 of 7	3.9 h	3 days
244	Citizen station CW9887CW9887	81.6	Citizen	Belknap	61.3%	103 of 168	18 s	6.6 h
245	WhitefieldHIE	81.5	Airport	Coos	100%	168 of 168	9 min	60 min
246	Antrim 4.1 NWNH-HL-108	81.5	Volunteer	Hillsborough	57.1%	4 of 7	26 min	4 days
247	DamFFLN3	81.5	Cooperative	Merrimack	57.1%	4 of 7	1.6 h	4 days
248	Plymouth 4.0 NENH-GR-76	81.4	Volunteer	Grafton	57.1%	4 of 7	4.4 h	3 days
249	Citizen station GW3604GW3604	81.3	Citizen	Rockingham	59.3%	239 of 403	19 s	2.4 h
250	Citizen station FW3784FW3784	81.2	Citizen	Carroll	60.1%	101 of 168	14 s	6.5 h

How a station is ranked

The 247 Rank answers one question about a weather station: can its readings be relied on? A station has to deliver: its reports arrive when due, soon, without long silences. And its readings have to be right: close to a trusted station nearby, passing their checks, and in step with the weather the forecast and its neighbours confirm.

The 247 score

Storm Station's poller asks every network on its own schedule, around the clock, and keeps the time of every report it hears; the reference comparison and the forecast engine keep the rest. From the last seven days of that record each station is scored out of 100 on six parts, and its 247 score is their weighted mean:

Reports receivedweight 35The share of its scheduled reports received. A station that sends every 5 minutes is due 2,016 reports in a week; one that reports once a day is due 7. Each report is counted in a slot centred on the station's own report time, so a report a minute early or late is still on time, and the week ends an hour back, so a report still on its way is never counted missed.Full marks: 100% received. No marks: none received.
Arrivalweight 10The median time its reports took to arrive from the moment a reading was taken to the moment it reached Storm Station.Full marks: within 10 minutes, or a tenth of its schedule for a station that reports less often. No marks: an hour, or its whole schedule.
Continuityweight 10Its longest silence against its own schedule, so a daily gauge is not marked down for a day between reports.Full marks: a silence of 3 reports or less. No marks: 72 reports, falling evenly on a log scale between.
Accuracyweight 20How closely its temperature follows its reference station the nearest airport or climate reference station that reported within half an hour, up to 15 miles away, reading by reading; an airfield is compared with the nearest other airport, never its own report. A steady offset is taken out, and where both heights are known only the offset beyond 3 F that the height difference does not explain is counted.Full marks: within 1.5 F, allowing 0.1 F more for each mile to the reference. No marks: 6.5 F beyond that.
Instrument checksweight 15The share of its readings that pass a check. For an airfield, the check the forecast engine runs the next day: each reading against the stations around it, as weather services check their own. For any other station, a reading 20 F or more from its reference fails, unless the two stand 3,000 ft or more apart.Full marks: none failed. No marks: 5% failed.
Forecast checkweight 10How closely its temperature matched Storm Station's forecast for the same hours, checked the next day, for every airfield the forecast engine scores. A station whose readings stray far from a forecast its neighbours confirm is one to doubt.Full marks: within 2 F on average. No marks: 8 F.

A part is scored once the week holds 24 readings or comparisons for it. A part that cannot be measured where a station stands counts at the middle of its state's measured stations, so the station is neither lifted nor sunk by it. A part measured nowhere in the state is left out, and the others carry its weight.

From score to rank

Each state's stations are ranked by their score, to the tenth. At an equal score the longer record comes first: a station that sent 2,016 of 2,016 reports has shown more than one that sent 7 of 7. Then the faster arrival, then the shorter silence. Ties on all of them share a rank, as a race is scored: three stations tied for third are all third, and the next is sixth.

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. The rank is made again every day, so a station that falls silent or starts to read wrong drops, and one that recovers climbs back. Every page shows the same ranking: a station's rank here, in its state's list and on its own page come from one run, and a new run reaches them together. Each station's page shows its score part by part, with the figures behind each.

The same figures as data

/api/ranks for a state and /api/rank for one station, its score in parts; the developer page has every field.