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      Elev 692 ft, 42.071 °N 87.938 °W

      Mount Prospect, IL

      Downtown Station69°
      Updated: 12:07 AM CDT on September 30, 2026 (GMT -5)
      6 minutes ago
      81°
      51°
      69
      Feels Like 69
      Partly Cloudy
      N
      9
      Gusts 19 mph
      Lower temperature is expected today
      Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Tue 09/29
        Low 62°f
         76% Precip. / 0.03 in
        Cloudy skies with periods of rain late. Low 62F. Winds SSW at 5 to 10 mph. Chance of rain 80%.
        Tomorrow
        Wed 09/30
        High 65°f
         97% Precip. / 0.86 in
        Periods of rain. High near 65F. Winds SSW at 10 to 15 mph. Chance of rain 100%. Rainfall possibly over one inch.
        Tomorrow night
        Wed 09/30
        Low 64°f
         64% Precip. / 0.34 in
        Overcast with rain showers at times. Low 64F. Winds SSW at 5 to 10 mph. Chance of rain 60%.
        Hourly Forecast
        Now
        69°
        1AM
        68°
        2AM
        67°
        3AM
        67°
        4AM
        65°
        5AM
        64°
        6AM
        81%
        64°
        6:47AM
        Sunrise
        7AM
        94%
        63°
        8AM
        96%
        63°
        9AM
        94%
        63°
        10AM
        95%
        63°
        11AM
        90%
        63°
        12PM
        98%
        63°
        1PM
        96%
        64°
        2PM
        74%
        64°
        3PM
        63%
        64°
        4PM
        63%
        65°
        5PM
        57%
        65°
        6PM
        50%
        65°
        6:35PM
        Sunset
        7PM
        59%
        65°
        8PM
        52%
        65°
        9PM
        53%
        65°
        10PM
        65%
        65°
        11PM
        48%
        66°
        12AM
        49%
        66°
        Precipitation
        98%
        Rain possible after 6 AM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        56
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.9 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point49°F
        5. Humidity 50%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KPWK Station History
        Almanac for September 30, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 69°F 70°F 92°F 1971
        4. Low 62°F 51°F 29°F 1984
        5. Rain/Snow Depth
        6. Precipitation 1.2 in 2.9 in -
        7. Snow 0 in - in -
        Almanac for October 1, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 70°F 69°F 92°F
        4. Low 60°F 51°F 32°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:47 AM 6:34 PM
        3. Civil Twilight 6:19 AM 7:02 PM
        4. Nautical Twilight 5:47 AM 7:35PM
        5. Astronomical Twilight 5:14 AM 8:07 PM
        1. Length of Visible Light 12h 42m
        2. Length of Day 11h 47m
        3. Tomorrow will be 2 minutes 47 seconds shorter
        1. Moon 8:35 PM 11:37 AM
        2. Waning Gibbous77% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 25
        Full Moon
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