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Arctic air to set stage for snow before 2026. Click for the forecast. Chevron right

Alton, IL

21°F
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Alton

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Alton, IL Weather
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Today

Hourly

 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

10 PM

20°
RealFeel® 4°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNW 15 mph

Air QualityExcellent

Wind Gusts23 mph

Humidity63%

Indoor Humidity24% (Very Dry)

Dew Point10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

20°
RealFeel® 4°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNW 14 mph

Air QualityExcellent

Wind Gusts22 mph

Humidity56%

Indoor Humidity21% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

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Weather Near Alton:

  • O'Fallon, MO
  • St. Charles, MO
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