Live/247 Rank/Illinois

Illinois 24/7 Rank

Every station in Illinois 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.

1,393 stations ranked37.6% sent every report dueranked October 16, 2026page 4 of 6Illinois instrumentsIllinois 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 1,393 ranked here, 1,385 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
751	Cache River At FormanFMNI2	95.3	Gauge	Johnson	97.6%	164 of 168	26 min	2 h
752	Sugar Creek AT MilfordMILI2	95.3	Gauge	Iroquois	97.6%	164 of 168	27 min	2 h
752	Des Plaines River AT River ForestRVFI2	95.3	Gauge	Cook	97.6%	164 of 168	27 min	2 h
754	Copper Slough AT ChampaignCMII2	95.2	Gauge	Champaign	100%	168 of 168	31 min	76 min
754	Rock River AT DixonDXRI2	95.2	Gauge	Lee	100%	168 of 168	31 min	76 min
756	Calumet Harbor IL - 9087044CMTI2	95.2	Gauge	Cook	98.8%	830 of 840	25 min	48 min
757	Wabash River AT Mount CarmelMCRI2	95.1	Gauge	Wabash	100%	168 of 168	32 min	77 min
758	Rain Gage At Ping Tom Park At Chicago415118087381201	95.1	Gauge	Cook	99.1%	111 of 112	42 min	3 h
759	Mascoutah - Silver CreekMTHI2	94.9	Gauge	St. Clair	99.4%	167 of 168	32 min	2 h
760	Lake VillaFLVI2	94.9	Gauge	Lake	99.4%	167 of 168	32 min	2 h
761	Du Page River AT ShorewoodSORI2	94.8	Gauge	Will	98.8%	166 of 168	31 min	1.8 h
762	Little Wabash River 3 AT CarmiCRII2	94.8	Gauge	White	98.8%	166 of 168	31 min	2 h
762	Mount Prospect - McDonald CreekMCDI2	94.8	Gauge	Cook	98.8%	166 of 168	31 min	2 h
762	Seneca - Illinois RiverSNAI2	94.8	Gauge	La Salle	98.8%	166 of 168	31 min	2 h
765	PontiacPNT	94.7	Airport	Livingston	94.4%	476 of 504	16 min	80 min
766	Middle Fork Vermilion River 2 AT OakwoodOKWI2	94.7	Gauge	Vermilion	92.8%	156 of 168	21 min	3 h
767	Rain Gage Near Le Roy401956088453801	94.7	Gauge	McLean	88.1%	148 of 168	13 min	62 min
768	Mississippi River AT Rock Island LD15RCKI2	94.5	Gauge	Rock Island	99.7%	335 of 336	26 min	60 min
769	Fox River AT YorkvilleYKVI2	94.5	Gauge	Kendall	98.2%	165 of 168	31 min	2 h
770	Marseilles Lock/DamMALI2	94.5	Cooperative	La Salle	85.7%	6 of 7	14 min	2 days
771	Gladstone L/D 18GLDI2	94.5	Cooperative	Henderson	85.7%	6 of 7	15 min	24 h
772	AT Lake SpringfieldSPNI2	94.5	Cooperative	Sangamon	85.7%	6 of 7	15 min	2 days
773	Fort Massac State ParkFTMI2	94.5	Cooperative	Massac	85.7%	6 of 7	15 min	2 days
774	Earlville 3SERVI2	94.5	Cooperative	La Salle	85.7%	6 of 7	24 min	2 days
775	Dam 13FLTI2	94.5	Cooperative	Whiteside	85.7%	6 of 7	25 min	2 days
776	Ottawa 4SWOTTI2	94.5	Cooperative	La Salle	85.7%	6 of 7	25 min	35.5 h
777	De KalbDKAI2	94.5	Cooperative	De Kalb	85.7%	6 of 7	25 min	2 days
778	Hartsburg 3.2 EIL-LG-50	94.5	Volunteer	Logan	85.7%	6 of 7	26 min	2 days
779	Geneva 1.0 SSWIL-KN-22	94.5	Volunteer	Kane	85.7%	6 of 7	26 min	24 h
780	Chatsworth 1.2 SIL-LV-21	94.5	Volunteer	Livingston	85.7%	6 of 7	26 min	36 h
780	Pana 4.7 SSEIL-SH-6	94.5	Volunteer	Shelby	85.7%	6 of 7	26 min	36 h
782	Bryant 0.1 ENEIL-FL-7	94.5	Volunteer	Fulton	85.7%	6 of 7	26 min	37 h
783	Champaign 2.3 SSEIL-CP-165	94.5	Volunteer	Champaign	85.7%	6 of 7	26 min	2 days
784	Alsip 0.9 EIL-CK-390	94.5	Volunteer	Cook	85.7%	6 of 7	26 min	35 h
785	Decatur 3.2 SWIL-MA-27	94.5	Volunteer	Macon	85.7%	6 of 7	26 min	36 h
786	Urbana 2.2 SEIL-CP-135	94.5	Volunteer	Champaign	85.7%	6 of 7	26 min	2 days
786	Washington 2.0 NNWIL-TZ-36	94.5	Volunteer	Tazewell	85.7%	6 of 7	26 min	2 days
786	Crossville 3.0 EIL-WH-4	94.5	Volunteer	White	85.7%	6 of 7	26 min	2 days
789	Lanark 4.2 NNWIL-CR-22	94.5	Volunteer	Carroll	85.7%	6 of 7	26 min	24 h
790	Carbondale 0.7 WIL-JK-31	94.5	Volunteer	Jackson	85.7%	6 of 7	26 min	2 days
791	Aurora 3.2 WNWIL-KN-138	94.5	Volunteer	Kane	85.7%	6 of 7	26 min	2 days
792	Yates CityYATI2	94.5	Cooperative	Knox	85.7%	6 of 7	35 min	47 h
793	McHenry Stratton Lock/DamMCHI2	94.5	Cooperative	McHenry	85.7%	6 of 7	35 min	2 days
793	QuincyQLDI2	94.5	Cooperative	Adams	85.7%	6 of 7	35 min	2 days
795	Mendota 1SMDTI2	94.5	Cooperative	La Salle	85.7%	6 of 7	55 min	36 h
796	HutsonvilleHTVI2	94.5	Cooperative	Crawford	85.7%	6 of 7	55 min	2 days
797	Bourbonnais 3NWBOUI2	94.5	Cooperative	Kankakee	85.7%	6 of 7	65 min	2 days
798	Elgin 7.5 WSWIL-KN-86	94.5	Volunteer	Kane	85.7%	6 of 7	85 min	2 days
799	Urbana 5.4 ENEIL-CP-177	94.5	Volunteer	Champaign	85.7%	6 of 7	85 min	2 days
800	Davis 0.5 NIL-SP-7	94.5	Volunteer	Stephenson	85.7%	6 of 7	86 min	47 h
801	Coal Valley 2.6 EIL-HY-15	94.5	Volunteer	Henry	85.7%	6 of 7	86 min	32 h
802	Savoy 2.6 WSWIL-CP-50	94.5	Volunteer	Champaign	85.7%	6 of 7	86 min	35 h
803	Bolingbrook 2.6 NEIL-DP-174	94.5	Volunteer	DuPage	85.7%	6 of 7	86 min	2 days
804	Monticello 0.6 ENEIL-PT-20	94.5	Volunteer	Piatt	85.7%	6 of 7	86 min	2 days
805	Morris 1.5 SWIL-GY-28	94.5	Volunteer	Grundy	85.7%	6 of 7	86 min	2 days
806	Sidney 0.9 NIL-CP-37	94.5	Volunteer	Champaign	85.7%	6 of 7	86 min	2 days
807	Rantoul 1.4 NNEIL-CP-149	94.5	Volunteer	Champaign	85.7%	6 of 7	86 min	25 h
808	Beason 4.0 SWIL-LG-9	94.5	Volunteer	Logan	85.7%	6 of 7	86 min	37 h
809	Williamsfield 1.7 NNEIL-KX-23	94.5	Volunteer	Knox	85.7%	6 of 7	86 min	2 days
809	Amboy 0.5 SSEIL-LE-27	94.5	Volunteer	Lee	85.7%	6 of 7	86 min	2 days
811	Ellis Grove 1.5 SWIL-RH-16	94.5	Volunteer	Randolph	85.7%	6 of 7	86 min	2 days
812	Urbana 0.9 SIL-CP-175	94.5	Volunteer	Champaign	85.7%	6 of 7	86 min	35 h
812	Mundelein 0.5 NNEIL-LK-54	94.5	Volunteer	Lake	85.7%	6 of 7	86 min	35 h
814	Villa Park 0.8 ESEIL-DP-178	94.5	Volunteer	DuPage	85.7%	6 of 7	86 min	36 h
814	Riverwoods 0.4 ENEIL-LK-39	94.5	Volunteer	Lake	85.7%	6 of 7	86 min	36 h
816	Urbana 1.5 SIL-CP-174	94.5	Volunteer	Champaign	85.7%	6 of 7	86 min	2 days
816	Urbana 0.9 SSEIL-CP-58	94.5	Volunteer	Champaign	85.7%	6 of 7	86 min	2 days
816	Galena 0.8 WSWIL-JD-16	94.5	Volunteer	Jo Daviess	85.7%	6 of 7	86 min	2 days
816	Bement 1.5 SEIL-PT-26	94.5	Volunteer	Piatt	85.7%	6 of 7	86 min	2 days
820	Hoffman Estates 4.2 WIL-CK-456	94.5	Volunteer	Cook	85.7%	6 of 7	86 min	47 h
821	Maple Park 3.9 SIL-KN-134	94.5	Volunteer	Kane	85.7%	6 of 7	86 min	37 h
822	Montgomery 0.8 SSEIL-KD-5	94.5	Volunteer	Kendall	85.7%	6 of 7	86 min	2 days
822	Hampshire 0.5 SEIL-KN-145	94.5	Volunteer	Kane	85.7%	6 of 7	86 min	2 days
824	Aurora 5.1 SSEIL-WL-193	94.5	Volunteer	Will	85.7%	6 of 7	86 min	2 days
825	North Aurora 0.3 NNEIL-KN-160	94.5	Volunteer	Kane	85.7%	6 of 7	86 min	24 h
826	Tremont 4.3 SSEIL-TZ-50	94.5	Volunteer	Tazewell	85.7%	6 of 7	86 min	36 h
827	Hebron (Hydro)HEBI2	94.5	Cooperative	McHenry	85.7%	6 of 7	1.6 h	2 days
828	NeogaNOGI2	94.5	Cooperative	Cumberland	85.7%	6 of 7	1.6 h	2 days
829	Athens 2SWAHNI2	94.5	Cooperative	Menard	85.7%	6 of 7	1.9 h	37 h
830	Sangamon River AT Decatur WTPDECI2	94.5	Cooperative	Macon	85.7%	6 of 7	1.9 h	2 days
831	ArthurARTI2	94.5	Cooperative	Moultrie	85.7%	6 of 7	2.1 h	24 h
832	Carlock 5.5 NIL-WF-32	94.5	Volunteer	Woodford	85.7%	6 of 7	2.4 h	2 days
832	Mokena 4.4 WNWIL-WL-180	94.5	Volunteer	Will	85.7%	6 of 7	2.4 h	2 days
832	Crete 2.6 EIL-WL-25	94.5	Volunteer	Will	85.7%	6 of 7	2.4 h	2 days
835	Winnetka 1.0 NWIL-CK-473	94.5	Volunteer	Cook	85.7%	6 of 7	2.4 h	2 days
836	Moline 0.7 NNEIL-RI-13	94.5	Volunteer	Rock Island	85.7%	6 of 7	2.4 h	2 days
837	Fithian 2.6 ESEIL-VR-45	94.5	Volunteer	Vermilion	85.7%	6 of 7	2.4 h	24 h
838	Elgin 2.3 WNWIL-KN-2	94.5	Volunteer	Kane	85.7%	6 of 7	2.4 h	2 days
839	Long Lake 0.4 SIL-LK-100	94.5	Volunteer	Lake	85.7%	6 of 7	2.4 h	36 h
840	Glen Ellyn 1.1 WSWIL-DP-141	94.5	Volunteer	DuPage	85.7%	6 of 7	2.4 h	2 days
840	Winfield 0.8 ENEIL-DP-177	94.5	Volunteer	DuPage	85.7%	6 of 7	2.4 h	2 days
842	De Kalb 3.2 WNWIL-DK-9	94.5	Volunteer	De Kalb	85.7%	6 of 7	2.4 h	36 h
843	Clifton 3.9 ESEIL-IR-24	94.5	Volunteer	Iroquois	85.7%	6 of 7	2.4 h	37 h
843	Petersburg 6.5 SSEIL-ME-8	94.5	Volunteer	Menard	85.7%	6 of 7	2.4 h	37 h
845	Princeton 1.0 SSWIL-BU-15	94.5	Volunteer	Bureau	85.7%	6 of 7	2.4 h	2 days
845	Morton 5.1 EIL-TZ-40	94.5	Volunteer	Tazewell	85.7%	6 of 7	2.4 h	2 days
847	Chicago - Chicago River at LockLCRI2	94.4	Gauge	Cook	96.9%	543 of 560	30 min	48 min
848	Harwood Heights 4.0 ESEIL-CK-429	94.4	Volunteer	Cook	85.7%	6 of 7	2.4 h	2 days
849	Sugar Grove 0.7 NEIL-KN-4	94.4	Volunteer	Kane	85.7%	6 of 7	2.4 h	24 h
849	Herrin 1.0 SEIL-WM-27	94.4	Volunteer	Williamson	85.7%	6 of 7	2.4 h	24 h
851	Lake Forest 2.0 WSWIL-LK-128	94.4	Volunteer	Lake	85.7%	6 of 7	2.4 h	2 days
852	Rain Gage At Lisle414826088044501	94.3	Gauge	DuPage	98.2%	165 of 168	33 min	3 h
853	Apple River AT HanoverAPRI2	94.3	Gauge	Jo Daviess	97.6%	164 of 168	31 min	2 h
854	MCHI2MCHI2	94.2	DCP	-	85.7%	6 of 7	2.9 h	2 days
855	Starved Rock Met Station Near North Utica411926088585501	94.1	Gauge	La Salle	97.6%	164 of 168	33 min	2 h
856	Des Plaines River AT LincolnshireLDRI2	94.1	Gauge	Lake	97.0%	163 of 168	31 min	2 h
857	Lansing 2SLNSI2	94.1	Cooperative	Cook	85.7%	6 of 7	3.2 h	36 h
858	Grand Chain Dam 53GCTI2	94.1	Cooperative	Pulaski	85.7%	6 of 7	-	2 days
859	Rockford 6.8 SWIL-WN-60	94.0	Volunteer	Winnebago	85.7%	6 of 7	3.4 h	2 days
860	Batavia 0.5 SIL-KN-162	94.0	Volunteer	Kane	85.7%	6 of 7	3.4 h	24 h
861	Mahomet 0.5 NNWIL-CP-163	94.0	Volunteer	Champaign	85.7%	6 of 7	3.4 h	2 days
862	Illinois City 6.7 SWIL-RI-22	94.0	Volunteer	Rock Island	85.7%	6 of 7	3.4 h	2 days
862	Springfield 5.1 NIL-SG-79	94.0	Volunteer	Sangamon	85.7%	6 of 7	3.4 h	2 days
864	Dunlap 2.6 NEIL-PR-4	94.0	Volunteer	Peoria	85.7%	6 of 7	3.4 h	2 days
865	Champaign 2.2 SSEIL-CP-148	94.0	Volunteer	Champaign	85.7%	6 of 7	3.4 h	2 days
866	Rock River At Dixon05442300	93.9	Gauge	Lee	100%	168 of 168	38 min	60 min
866	Copper Slough At Champaign05590050	93.9	Gauge	Champaign	100%	168 of 168	38 min	60 min
868	Posey 3 (Py 3)380758087551001	93.9	Gauge	White	100%	168 of 168	38 min	60 min
869	Mississippi River 3 WNW Ill. City LD16ILNI2	93.9	Gauge	Rock Island	99.7%	335 of 336	26 min	60 min
870	LemontLMNI2	93.9	Gauge	Cook	99.4%	167 of 168	37 min	2 h
871	JolietJOLI2	93.8	Gauge	Will	100%	168 of 168	37 min	62 min
872	Berwyn - ISWS Lake MichiganBERI2	93.7	Gauge	Cook	98.8%	332 of 336	37 min	1.5 h
873	Le Roy 1SLRYI2	93.7	Gauge	McLean	87.5%	147 of 168	17 min	2 h
874	Rock Falls - Sinnissippi DamSSDI2	93.6	Gauge	Whiteside	98.8%	166 of 168	37 min	2.3 h
875	Spring Creek AT SpringfieldSPFI2	93.6	Gauge	Sangamon	97.6%	82 of 84	67 min	3 h
876	Franklin ParkCFKI2	93.5	Gauge	Cook	98.8%	332 of 336	37 min	1.5 h
877	ChicagoCHWI2	93.5	Gauge	Cook	98.5%	331 of 336	37 min	1.5 h
878	Spring Grove 1.2 ESEIL-MCH-108	93.5	Volunteer	McHenry	85.7%	6 of 7	4.4 h	37 h
878	Karnak 2.4 WIL-PL-5	93.5	Volunteer	Pulaski	85.7%	6 of 7	4.4 h	37 h
880	Wheeling 1.0 NWIL-CK-460	93.5	Volunteer	Cook	85.7%	6 of 7	4.4 h	2 days
881	Oakwood 0.5 SSEIL-VR-49	93.5	Volunteer	Vermilion	85.7%	6 of 7	4.4 h	2 days
882	Oak Lawn 0.5 SSWIL-CK-149	93.5	Volunteer	Cook	85.7%	6 of 7	4.4 h	2 days
882	Pana 6.2 NNEIL-CN-3	93.5	Volunteer	Christian	85.7%	6 of 7	4.4 h	2 days
884	Plainville 0.2 NNWIL-AD-23	93.5	Volunteer	Adams	85.7%	6 of 7	4.4 h	2 days
885	Sparland 3.4 NNWIL-MH-4	93.5	Volunteer	Marshall	85.7%	6 of 7	4.4 h	2 days
886	Broadlands 0.1 SSWIL-CP-21	93.5	Volunteer	Champaign	85.7%	6 of 7	4.4 h	2 days
887	Chicago - ISWS Lake Michigan DiversionCBLI2	93.4	Gauge	Cook	99.1%	333 of 336	37 min	1.5 h
888	FloraFOAI2	93.4	Gauge	Clay	85.7%	6 of 7	4.6 h	2 days
889	Genoa 1.5 SWIL-DK-44	93.1	Volunteer	De Kalb	85.7%	6 of 7	5.4 h	2 days
889	Gilberts 0.5 NIL-KN-98	93.1	Volunteer	Kane	85.7%	6 of 7	5.4 h	2 days
891	Effingham 4.2 WNWIL-EF-32	93.1	Volunteer	Effingham	85.7%	6 of 7	5.4 h	2 days
892	Urbana 0.9 SSEIL-CP-169	93.1	Volunteer	Champaign	85.7%	6 of 7	5.4 h	36 h
893	Sutter 2.2 SIL-HN-9	93.1	Volunteer	Hancock	85.7%	6 of 7	5.4 h	33 h
894	Bloomington - Kickapoo CreekBKCI2	93.0	Gauge	Mclean	100%	84 of 84	82 min	2.3 h
895	Mississippi River At Alton IlALOI2	93.0	Gauge	Madison	98.5%	331 of 336	17 min	60 min
896	Weather Station At Cssc Nr Lemont414129087575201	92.9	Gauge	Cook	100%	168 of 168	43 min	1.5 h
897	Orland ParkORLI2	92.9	Gauge	Cook	99.1%	333 of 336	42 min	62 min
898	WestchesterWBRI2	92.9	Gauge	Cook	98.5%	331 of 336	37 min	1.5 h
899	Lansing - ISWS Lake Michigan DiversionLSGI2	92.8	Gauge	Cook	98.8%	332 of 336	41 min	1.5 h
900	Shoal Creek AT PierronPRNI2	92.8	Gauge	Bond	98.8%	332 of 336	41 min	60 min
901	Illinois River AT OttawaOTWI2	92.7	Gauge	La Salle	94.6%	159 of 168	27 min	5 h
902	Rain Gage At Franklin Park415537087525801	92.6	Gauge	Cook	99.1%	333 of 336	42 min	62 min
903	Bull Valley 2.5 WNWIL-MCH-13	92.6	Volunteer	McHenry	85.7%	6 of 7	6.4 h	35 h
904	Carterville 0.6 NWIL-WM-24	92.6	Volunteer	Williamson	85.7%	6 of 7	6.4 h	24 h
905	Matteson 0.9 EIL-CK-407	92.6	Volunteer	Cook	85.7%	6 of 7	6.4 h	2 days
905	Urbana 2.6 ENEIL-CP-126	92.6	Volunteer	Champaign	85.7%	6 of 7	6.4 h	2 days
907	Rock River AT RockfordRFDI2	92.5	Gauge	Winnebago	94.0%	158 of 168	17 min	9 h
908	Vermilion River AT DanvilleDNVI2	92.5	Gauge	Vermilion	90.4%	76 of 84	52 min	2 h
909	JacksonvilleJAXI2	92.5	Cooperative	Morgan	85.7%	6 of 7	6.6 h	2.1 days
910	Streator 2SESTAI2	92.5	Cooperative	Livingston	85.7%	6 of 7	6.7 h	2 days
911	ChicagoCBBI2	92.4	Gauge	Cook	98.5%	331 of 336	37 min	1.5 h
912	ChicagoCHUI2	92.3	Gauge	Cook	99.4%	334 of 336	37 min	1.5 h
913	Dupage County Rain At DarienDARI2	92.3	Gauge	DuPage	89.2%	200 of 224	27 min	1.8 h
913	Wilton CenterWTTI2	92.3	Gauge	Will	89.2%	200 of 224	27 min	1.8 h
915	Stickney - Chicago Sanitary CanalSTII2	92.2	Gauge	Cook	100%	168 of 168	47 min	65 min
916	Des Plaines River AT LyonsLYNI2	92.2	Gauge	Cook	100%	168 of 168	47 min	62 min
916	Wood Dale - Salt CreekWDSI2	92.2	Gauge	Du Page	100%	168 of 168	47 min	62 min
918	Shabbona 5 NNE54811	92.2	Reference	De Kalb	100%	84 of 84	1.5 h	3 h
919	Champaign 9 SW54808	92.2	Reference	Champaign	100%	84 of 84	1.5 h	3 h
920	Rain Gage At Westchester415057087524801	92.2	Gauge	Cook	99.7%	335 of 336	42 min	62 min
921	Addison County Rain At AddisonADSI2	92.2	Gauge	DuPage	88.8%	199 of 224	27 min	1.8 h
922	Kaskaskia River AT New AthensNASI2	92.1	Gauge	St Clair	100%	168 of 168	47 min	62 min
923	Knoxville 0.7 NWIL-KX-9	92.1	Volunteer	Knox	85.7%	6 of 7	7.4 h	36 h
923	Petersburg 1.3 NIL-ME-2	92.1	Volunteer	Menard	85.7%	6 of 7	7.4 h	36 h
925	Plainfield 3.9 SSWIL-WL-182	92.1	Volunteer	Will	85.7%	6 of 7	7.4 h	2 days
926	Chicago Heights 2.4 NNWIL-CK-296	92.1	Volunteer	Cook	85.7%	6 of 7	7.4 h	2 days
926	St. Charles 1.1 SEIL-KN-156	92.1	Volunteer	Kane	85.7%	6 of 7	7.4 h	2 days
928	Elgin 0.9 WSWIL-KN-143	92.1	Volunteer	Kane	85.7%	6 of 7	7.4 h	24 h
929	Rain Gage At North Austin415458087462201	92.0	Gauge	Cook	99.4%	334 of 336	42 min	62 min
930	Alsip - ISWS Lake MichiganALSI2	92.0	Gauge	Cook	99.1%	333 of 336	37 min	1.5 h
931	Chicago - NB Chicago River at GrandNBGI2	91.9	Gauge	Cook	99.4%	167 of 168	47 min	2 h
932	WinnetkaWNKI2	91.9	Gauge	Cook	98.8%	332 of 336	37 min	1.5 h
933	LemontLCSI2	91.9	Gauge	Du Page	95.3%	641 of 672	40 min	45 min
934	Rain Gage At Lake View415657087382101	91.8	Gauge	Cook	99.1%	333 of 336	42 min	62 min
935	NorthbrookNBKI2	91.7	Gauge	Cook	98.5%	331 of 336	37 min	1.5 h
936	Glen Ellyn 4SGLEI2	91.7	Cooperative	DuPage	85.7%	6 of 7	8.4 h	45 h
937	Lake Zurich 1.4 WIL-LK-119	91.7	Volunteer	Lake	85.7%	6 of 7	8.4 h	2 days
937	Lake Bluff 1.3 WIL-LK-13	91.7	Volunteer	Lake	85.7%	6 of 7	8.4 h	2 days
939	Bloomington 1.5 ESEIL-MCL-48	91.7	Volunteer	McLean	85.7%	6 of 7	8.4 h	2 days
940	SummitSCOI2	91.6	Gauge	Cook	98.2%	165 of 168	46 min	2 h
941	Chicago - Chicago River at Columbus DrNBCI2	91.5	Gauge	Cook	90.0%	504 of 560	31 min	60 min
942	HarveyHRVI2	91.4	Gauge	Cook	98.8%	332 of 336	42 min	1.5 h
943	Rain Gage At West Pullman At Chicago414028087383501	91.2	Gauge	Cook	99.4%	334 of 336	42 min	62 min
944	SkokieSKOI2	91.2	Gauge	Cook	98.2%	330 of 336	37 min	62 min
945	Saybrook 4.3 SSEIL-MCL-30	91.2	Volunteer	McLean	85.7%	6 of 7	9.4 h	36 h
946	North Utica 6.3 NIL-LS-49	91.2	Volunteer	La Salle	85.7%	6 of 7	9.4 h	2 days
947	Monticello 6.5 WSWIL-PT-6	91.2	Volunteer	Piatt	85.7%	6 of 7	9.4 h	2 days
948	Romeoville - Chicago SanitaryROMI2	91.0	Gauge	Will	95.8%	322 of 336	45 min	1.5 h
949	ChicagoCHFI2	90.9	Gauge	Cook	98.5%	331 of 336	37 min	1.5 h
950	US-24/US-150 McCluggage BridgeSS0230	90.8	Road	Tazewell	92.1%	619 of 672	35 min	60 min
950	I-55/IL-104 @ PawneeSS0232	90.8	Road	Sangamon	92.1%	619 of 672	35 min	60 min
950	146 @ McClureSS0235	90.8	Road	Alexander	92.1%	619 of 672	35 min	60 min
950	I-39/Lincoln Bridge (593000)SS0776	90.8	Road	La Salle	92.1%	619 of 672	35 min	60 min
950	61 South Of ColmarSS0777	90.8	Road	McDonough	92.1%	619 of 672	35 min	60 min
950	- 39 MP 81 Lee CountySS1841	90.8	Road	La Salle	92.1%	619 of 672	35 min	60 min
950	US-20 FreeportSS1843	90.8	Road	Stephenson	92.1%	619 of 672	35 min	60 min
950	- 9 @ McNaughton BridgeSS1900	90.8	Road	Tazewell	92.1%	619 of 672	35 min	60 min
950	- 19 Spoon RiverSS1902	90.8	Road	Fulton	92.1%	619 of 672	35 min	60 min
950	- 72 BarrySS1905	90.8	Road	Pike	92.1%	619 of 672	35 min	60 min
950	IL D6- 55/IL-10 @ LincolnSS1906	90.8	Road	Logan	92.1%	619 of 672	35 min	60 min
961	29 at TaylorvilleMX9211	90.8	Road	Christian	91.9%	618 of 672	35 min	60 min
961	US-67 @ BeardstownSS1908	90.8	Road	Cass	91.9%	618 of 672	35 min	60 min
961	100 @ Joe Page BridgeSS1910	90.8	Road	Greene	91.9%	618 of 672	35 min	60 min
964	Lincoln 0.1 NNEIL-LG-6	90.7	Volunteer	Logan	85.7%	6 of 7	10.4 h	2 days
965	US-51 @ HeyworthSS1921	90.4	Road	McLean	91.5%	615 of 672	35 min	65 min
966	Rain Gage At Deer Creek Near Chicago Heights413115087352501	90.3	Gauge	Cook	99.7%	335 of 336	42 min	62 min
967	Rogers Park 1.5 SWIL-CK-214	90.3	Volunteer	Cook	85.7%	6 of 7	11.4 h	36 h
968	Savoy 0.6 SSEIL-CP-109	90.3	Volunteer	Champaign	85.7%	6 of 7	11.4 h	2 days
969	I-57 ChebanseSS1922	90.2	Road	Iroquois	91.9%	618 of 672	35 min	60 min
970	- 173 at Piscasaw Crk BridgeSS0313	90.1	Road	McHenry	91.3%	614 of 672	35 min	70 min
971	Rain Gage At Hamilton Park At Chicago414542087380901	90.0	Gauge	Cook	98.8%	332 of 336	42 min	62 min
972	Rain Gage At Oakton College At Skokie420119087445101	90.0	Gauge	Cook	98.5%	331 of 336	42 min	62 min
973	US 50 at GreendaleMX9208	90.0	Road	-	91.9%	618 of 672	35 min	60 min
974	MattesonMTTI2	89.9	Gauge	Cook	97.9%	329 of 336	44 min	1.5 h
975	Rain Gage At Palos Park413912087522801	89.7	Gauge	Cook	99.7%	335 of 336	42 min	62 min
976	I-80 @ Hennepin Canal M.P. 44SS0536	89.7	Road	Bureau	90.9%	611 of 672	35 min	75 min
977	Palos Park - ISWS Lake MichiganPPKI2	89.6	Gauge	Cook	99.1%	333 of 336	42 min	1.5 h
978	US-34 @ MonmouthSS0325	89.6	Road	Warren	91.0%	612 of 672	35 min	80 min
979	Waukegan HarborWHRI2	89.5	Gauge	Lake	99.4%	167 of 168	27 min	2 h
980	Barrington 3SWBARI2	89.5	Cooperative	Cook	71.4%	5 of 7	5 min	2 days
981	AltonALNI2	89.5	Cooperative	Madison	71.4%	5 of 7	15 min	47 h
982	Morris 1NWMOSI2	89.5	Cooperative	Grundy	71.4%	5 of 7	15 min	3 days
983	Chicago Ridge 0.2 WSWIL-CK-152	89.5	Volunteer	Cook	71.4%	5 of 7	26 min	3 days
984	Batavia 0.3 SEIL-KN-132	89.5	Volunteer	Kane	71.4%	5 of 7	26 min	24 h
985	Homer 0.5 NNEIL-CP-181	89.5	Volunteer	Champaign	71.4%	5 of 7	26 min	2 days
986	Burr Ridge 1.0 ENEIL-CK-358	89.5	Volunteer	Cook	71.4%	5 of 7	26 min	2.5 days
987	Normal 1.7 SEIL-MCL-63	89.5	Volunteer	McLean	71.4%	5 of 7	26 min	3 days
988	Lombard 0.2 NIL-DP-187	89.5	Volunteer	DuPage	71.4%	5 of 7	26 min	35 h
989	CentraliaCNTI2	89.5	Cooperative	Clinton	71.4%	5 of 7	35 min	24 h
990	Sewage PlantMDHI2	89.5	Cooperative	Jackson	71.4%	5 of 7	55 min	3 days
991	Kankakee WWTPKKEI2	89.5	Cooperative	Kankakee	71.4%	5 of 7	75 min	3 days
992	MinonkMINI2	89.5	Cooperative	Woodford	71.4%	5 of 7	85 min	3 days
993	Lake Villa 2.3 WSWIL-LK-81	89.5	Volunteer	Lake	71.4%	5 of 7	85 min	3 days
994	Yorkville 1.2 ENEIL-KD-168	89.5	Volunteer	Kendall	71.4%	5 of 7	86 min	3 days
995	Carbondale 3.7 SIL-JK-25	89.5	Volunteer	Jackson	71.4%	5 of 7	86 min	3 days
995	Moline 1.9 WIL-RI-29	89.5	Volunteer	Rock Island	71.4%	5 of 7	86 min	3 days
997	Carbondale 1.2 WIL-JK-24	89.5	Volunteer	Jackson	71.4%	5 of 7	86 min	3 days
998	Champaign 2.4 SSEIL-CP-64	89.5	Volunteer	Champaign	71.4%	5 of 7	86 min	3 days
999	Ashley 1.4 NNEIL-WS-1	89.5	Volunteer	Washington	71.4%	5 of 7	86 min	2.4 days
1,000	Eldorado 2.9 ESEIL-SL-4	89.5	Volunteer	Saline	71.4%	5 of 7	86 min	2 days

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.