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      Elev 692 ft, 42.071 °N 87.938 °W

      Mount Prospect, IL

      Downtown Station69°
      Updated: 11:01 PM CDT on September 29, 2026 (GMT -5)
      1 minute ago
      79°
      50°
      69
      Feels Like 69
      Partly Cloudy
      N
      7
      Lower temperature is expected tomorrow
      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
         63% Precip. / 0.03 in
        Partly cloudy skies this evening will give way to cloudy skies and rain overnight. Low 62F. Winds SSW at 5 to 10 mph. Chance of rain 60%.
        Tomorrow
        Wed 09/30
        High 65°f
         96% Precip. / 0.84 in
        Periods of rain. High near 65F. Winds SSW at 10 to 15 mph. Chance of rain 100%. Rainfall near an inch.
        Tomorrow night
        Wed 09/30
        Low 63°f
         67% Precip. / 0.35 in
        Cloudy with showers. Low 63F. Winds SSW at 5 to 10 mph. Chance of rain 70%.
        Hourly Forecast
        Now
        66°
        12AM
        66°
        1AM
        66°
        2AM
        65°
        3AM
        65°
        4AM
        65°
        5AM
        35%
        64°
        6AM
        83%
        64°
        6:48AM
        Sunrise
        7AM
        93%
        63°
        8AM
        96%
        63°
        9AM
        95%
        63°
        10AM
        91%
        63°
        11AM
        88%
        63°
        12PM
        96%
        63°
        1PM
        95%
        64°
        2PM
        71%
        64°
        3PM
        62%
        64°
        4PM
        63%
        65°
        5PM
        58%
        65°
        6PM
        50%
        65°
        6:35PM
        Sunset
        7PM
        58%
        65°
        8PM
        50%
        64°
        9PM
        50%
        65°
        10PM
        67%
        65°
        11PM
        51%
        65°
        Precipitation
        96%
        Rain possible after 5 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 Point52°F
        5. Humidity 59%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KPWK Station History
        Almanac for September 29, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 79°F 70°F 99°F 1953
        4. Low 50°F 52°F 32°F 1984
        5. Rain/Snow Depth
        6. Precipitation 0.03 in 2.9 in -
        7. Snow 0 in 0 in -
        Almanac for September 30, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 70°F 92°F
        4. Low 62°F 51°F 29°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:46 AM 6:36 PM
        3. Civil Twilight 6:18 AM 7:04 PM
        4. Nautical Twilight 5:46 AM 7:36PM
        5. Astronomical Twilight 5:13 AM 8:09 PM
        1. Length of Visible Light 12h 45m
        2. Length of Day 11h 49m
        3. Tomorrow will be 2 minutes 49 seconds shorter
        1. Moon 7:53 PM 10:20 AM
        2. Waning Gibbous86% 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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