Weather Forecast and Conditions for Alton, IL

Extreme Heat Watch issued August 30 at 12:27PM CDT until September 4 at 8:00PM CDT by NWS St Louis MO Read more
Current Conditions
93°
Feels like 102°
Sunny
Sunny
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Winds: SSW 4.5 mph
Humidity: 36%
Pressure: 30.07 inHg
Visibility: 18 miles
UV Index: 7
Precip today: 0 in
Dew Point: 63° F
Sunrise: 6:28 AM
Sunset: 7:34 PM
Today: Sunshine and hot; start of a period of much warmer weather
Tonight: Clear to partly cloudy
Updated August 30, 12:42 PM
Air Quality
AirQuality 75 Moderate
Grass 110 High
Mold 3250 Low
Ragweed 575 Very High
Tree 7 Low
UVIndex 7 High
5 Day Forecast
Sunday
08/30
Sunny
1%
93° / 66°
Monday
08/31
Hot
2%
98° / 70°
Tuesday
09/01
Hot
8%
99° / 71°
Wednesday
09/02
Hot
9%
99° / 72°
Thursday
09/03
Hot
9%
99° / 72°
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Weather data provided by AccuWeather API

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