Alton, IL Weather

As of

Weather Station:Alton High School

Open weather station selector modal

16degrees Fahrenheit

Feels like:1°F

Hi: 22Lo: 15

Mostly Cloudy

Live Weather Radar

Alton, IL weather radar map

Current Weather Details

Windchill
Daily Rain
0"
Dew point
Monthly Rain
0.34"
Humidity
60%
Avg. Wind
NW 11 mph
Pressure
30.27" →
Wind Gust
W 20 mph
Sunrise
7:17 AM
Moon
Waning Crescent
Sunset
5:04 PM
UV Index
1 (Low)

Weather Forecast

  • Today

    Hi

    Mostly cloudy. High temperature around 22F. Dew point will be around 10F with an average humidity of 40%. Winds will be 9 mph from the W.

  • Tonight

    Lo

    Mostly cloudy with a chance of flurries this evening then partly cloudy after midnight. Lows around 12. West winds 10 to 15 mph. Wind chill values as low as 4 above.

Alton, IL 10-day weather forecast

AIR QUALITY

18 | Excellent

Top Triggers:pm25
Air quality data provided by Ambee
View Today's Air Quality details for Alton, IL

POLLEN COUNT & ALLERGY FORECAST

0.1 Low

Predominant Pollen:None
View the Pollen forecast details

LIGHTNING MAP

Closest strike in the last 30 minutes:1361.5 miles

No Lightning Nearby

Real-time lightning alerts & live Map