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Alton Park Weather Warning NWS WEATHER ALERT FOR THE ALTON PARK, IL AREA - SHORTTERM FORECAST Issued: 1255 PM CDT Tue Sep 1 2026 Alton Park Weather Warning

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Alton Park, IL Weather - Hour by Hour Forecast

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Alton Park, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 82°F28°C, dew point 69°F21°C, humidity 65%. Wind direction is SSE at 7 mph11 km/h with visibility of 10 mi16 km. Barometric pressure is 29.99 in1016 mb.
Tonight - Clear. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 101 early this evening... Full Forecast
Wednesday - Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 104... Full Forecast

Alton Park Hourly Weather

24 Hour Forecast Scroll
Tue, Sep 01
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Alton Park, IL Hourly Weather - Clear - 9:00 PM Alton Park, IL Hourly Weather - Clear - 10:00 PM Alton Park, IL Hourly Weather - Clear - 11:00 PM Alton Park, IL Hourly Weather - Clear - 12:00 AM Alton Park, IL Hourly Weather - Clear - 1:00 AM Alton Park, IL Hourly Weather - Clear - 2:00 AM Alton Park, IL Hourly Weather - Clear - 3:00 AM Alton Park, IL Hourly Weather - Clear - 4:00 AM Alton Park, IL Hourly Weather - Clear - 5:00 AM Alton Park, IL Hourly Weather - Partly Cloudy - 6:00 AM Alton Park, IL Hourly Weather - Partly Cloudy - 7:00 AM Alton Park, IL Hourly Weather - Partly Cloudy - 8:00 AM Alton Park, IL Hourly Weather - Mostly Clear - 9:00 AM Alton Park, IL Hourly Weather - Mostly Clear - 10:00 AM Alton Park, IL Hourly Weather - Mostly Clear - 11:00 AM Alton Park, IL Hourly Weather - Partly Cloudy - 12:00 PM Alton Park, IL Hourly Weather - Partly Cloudy - 1:00 PM Alton Park, IL Hourly Weather - Partly Cloudy - 2:00 PM Alton Park, IL Hourly Weather - Partly Cloudy - 3:00 PM Alton Park, IL Hourly Weather - Partly Cloudy - 4:00 PM Alton Park, IL Hourly Weather - Partly Cloudy - 5:00 PM Alton Park, IL Hourly Weather - Partly Cloudy - 6:00 PM Alton Park, IL Hourly Weather - Partly Cloudy - 7:00 PM Alton Park, IL Hourly Weather - Partly Cloudy - 8:00 PM
Clear Clear Clear Clear Clear Clear Clear Clear Clear Partly Cloudy Partly Cloudy Partly Cloudy Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
86°F30°C 82°F28°C 81°F27°C 81°F27°C 80°F27°C 79°F26°C 77°F25°C 76°F24°C 75°F24°C 75°F24°C 74°F23°C 78°F26°C 83°F28°C 87°F31°C 90°F32°C 93°F34°C 96°F36°C 97°F36°C 98°F37°C 99°F37°C 96°F36°C 93°F34°C 90°F32°C 86°F30°C
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2% 2% 2% 2% 2% 1% 1% 1% 1% 1% 1% 4% 4% 4% 4% 4% 4% 4% 4% 4% 4% 4% 4% 3%
69°F21°C 71°F22°C 72°F22°C 72°F22°C 73°F23°C 72°F22°C 72°F22°C 71°F22°C 70°F21°C 70°F21°C 69°F21°C 70°F21°C 70°F21°C 71°F22°C 70°F21°C 69°F21°C 68°F20°C 67°F19°C 67°F19°C 66°F19°C 66°F19°C 65°F18°C 65°F18°C 66°F19°C
57% 69% 74% 74% 79% 79% 85% 85% 84% 84% 84% 77% 65% 59% 52% 46% 40% 38% 37% 34% 38% 40% 44% 51%
S S S S S S S SSE SW SW SW SW SW SW SW SW SW SSE SSE S S SSE SSE SSE
7 mph 7 mph 7 mph 4 mph 4 mph 4 mph 3 mph 3 mph 3 mph 4 mph 4 mph 4 mph 8 mph 8 mph 8 mph 8 mph 8 mph 8 mph 9 mph 9 mph 9 mph 6 mph 6 mph 6 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
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Temperature
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POP
Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KALN model statistics.

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Prob Precip % = Probability of Precipitation.

Alton Park 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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