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      Elev 607 ft, 41.668 °N 87.712 °W

      Blue Island, IL

      Alsip Station70°
      Updated: 10:17 PM CDT on September 16, 2026 (GMT -5)
      10 minutes ago
      75°
      66°
      70
      Feels Like 70
      Cloudy
      N
      2
      Higher temperature is expected tomorrow
      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
        Wed 09/16
        Low 67°f
         93% Precip. / 0.51 in
        Light rain this evening with thunderstorms developing overnight. Low 67F. Winds light and variable. Chance of rain 90%. Locally heavy rainfall possible.
        Tomorrow
        Thu 09/17
        High 78°f
         95% Precip. / 0.47 in
        Thunderstorms in the morning, then cloudy skies late. High 78F. Winds WNW at 5 to 10 mph. Chance of rain 100%.
        Tomorrow night
        Thu 09/17
        Low 67°f
         15% Precip. / 0 in
        Mostly cloudy. Slight chance of a rain shower. Low 67F. Winds NE at 5 to 10 mph.
        Hourly Forecast
        Now
        70°
        11PM
        59%
        70°
        12AM
        69°
        1AM
        38%
        69°
        2AM
        62%
        69°
        3AM
        52%
        69°
        4AM
        96%
        69°
        5AM
        93%
        69°
        6AM
        83%
        68°
        6:33AM
        Sunrise
        7AM
        96%
        69°
        8AM
        85%
        69°
        9AM
        62%
        70°
        10AM
        34%
        71°
        11AM
        72°
        12PM
        74°
        1PM
        76°
        2PM
        77°
        3PM
        77°
        4PM
        77°
        5PM
        76°
        6PM
        74°
        6:56PM
        Sunset
        7PM
        73°
        8PM
        71°
        9PM
        70°
        10PM
        70°
        Precipitation
        96%
        Thunderstorms likely to continue
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        53
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.25 in
        2. Visibility 6 miles
        3. Clouds Cloudy
        4. Dew Point67°F
        5. Humidity 92%
        6. Rainfall 0.13 in
        7. Snow Depth 0 in
         KMDW Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 75°F 76°F 91°F 2018
        4. Low 66°F 58°F 40°F 1984
        5. Rain/Snow Depth
        6. Precipitation 0.51 in - in -
        7. Snow 0 in - in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 78°F 76°F 90°F
        4. Low 66°F 58°F 45°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:33 AM 6:56 PM
        3. Civil Twilight 6:05 AM 7:24 PM
        4. Nautical Twilight 5:32 AM 7:56PM
        5. Astronomical Twilight 4:58 AM 8:30 PM
        1. Length of Visible Light 13h 18m
        2. Length of Day 12h 23m
        3. Tomorrow will be 2 minutes 46 seconds shorter
        1. Moon 1:37 PM 10:12 PM
        2. Waxing Crescent39% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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