Alert. A Freeze Watch is in force for Denison Municipal Airport until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Denison Municipal Airport is 46° and mostly cloudy at 12 AM. With the wind it feels like 38°. The dew point is 38°, so the air feels dry and comfortable. Moderate breeze from the northwest at 17 mph.
Today and tonight. It warms to about 49° by 4 PM. Tonight falls to about 31° by 4 AM, under a mostly clear sky. A freeze: protect plants and pipes. No rain is expected for the rest of the day.
The week. The warmest day ahead is Wednesday, near 75°, and the coolest tomorrow, near 57°. The days ahead look dry. The first freeze could come tomorrow, a low of 29°.
The sky tonight. The sun sets at 6:39 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:30 PM. The next full Moon is Sunday, Oct 25. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 5 minutes long, 3 minutes shorter than yesterday.
As of 12:00 AM in Denison Municipal Airport, Iowa.
Air quality
Index 20, good, led by ozone. Read at 11 PM from its reporting area, Pisgah (IA), 30 miles off.
Good each day through Today, led by ozone. Yesterday measured 17, good.
No smoke near the ground through Sat 7 PM.
Precipitation
0.90 in in the last 24 hours, and none in the 2 days before, to Thu 11 PM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 8 miles or more through Sat 7 PM, lowest 9 miles Sat 3 AM.
F
Now, today, and the week
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 12 / 30 | 5,000 ft | 75 ft | Concrete | 124° / 304° | 18 mph head, on 30 | 2 mph from the right |
| 18 / 36 unlit | 3,200 ft | 60 ft | Grass | 179° / 359° | 12 mph head, on 36 | 14 mph from the left |
Measured here
Every hour from Denison (DNS), Denison Municipal Airport's own instrument, measure by measure, on the field's own clock.
45 F at 10 PM Thursday; 52 F at its warmest, 1 AM Thursday, and 45 F at its coolest, 10 PM Thursday.
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
A dew point of 39 F, the air 79% saturated; the humidity ran from 71% at 8 PM Thursday to 100% at 4 AM Thursday.
How it is measured: Humidity variables, Field Book FB-WAT-002
13 mph from the northwest at 10 PM Thursday; at its strongest 21 mph, 7 PM Thursday, with a gust of 40 mph at 7 PM Thursday.
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
30.24 inHg at 10 PM Thursday, rising 0.06 inHg over 3 hours; 0.13 inHg higher than a day before.
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Down to 0.8 miles at 10 AM Thursday, under a mile for 1 hour; 10 miles or more now.
How it is measured: Fog types, Field Book FB-WAT-020
The lowest cloud base came down to 300 ft at 6 AM Thursday; a base was reported in 21 of the hours.
How it is measured: Cloud classification, Field Book FB-SKY-001
0.87 in measured in the gauge, the most, 0.21 in, in the hour to 10 AM Thursday.
How it is measured: ASOS, Field Book FB-INS-002
Denison: every reading, the last 7 days, 30 days and the year, and how well it reports
The 6 instruments nearest Denison Municipal Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.
measured now4 instruments
DenisonDNS
At an airfield/0.2 mi away/1,250 ft/24 ft below here
temp, wind, gust, visibility, precip, pressure
DenisonRDNI4
Beside a road/5.2 mi away/1,398 ft/124 ft above here
temp, pavement temp, wind, visibility, precip
Irwin 3 ESEIRWI4
At a river or reservoir gauge/19.1 mi away/1,322 ft/48 ft above here
temp, wind, gust, humidity, pressure
Shagbark HillsS2068
At a soil climate station/36.6 mi away/1,119 ft/155 ft below here
temp, humidity, soil temp, soil moisture
measured daily2 instruments
DenisonDNSI4
At a cooperative observer's station/4.3 mi away/1,394 ft/120 ft above here
snowfall, snow depth, precip, high, low
Earling 3.1 NIA-SH-5
In a volunteer observer's own ground/11.7 mi away/1,338 ft/64 ft above here
precip, snowfall, snow depth
-
Snow on the ground
15 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.