TODAY JUL07
TEMPERATURE94
HUMIDITY36
PRESSURE29.95
WIND COND.280 9.4
  • 9175Wed
  • 9372Thu30%40%
  • 8969Fri50%
  • 8868Sat
  • 8467Sun
daynightWeather update from Chicago / Wheeling, Pal-Waukee Airport at

Key findings

  • The highest monthly average temperature in Prospect Heights for August is 75 degrees
  • The lowest monthly average temperature in Prospect Heights for February is 25 degrees
  • The most monthly precipitation in Prospect Heights occurs in August with 12.8 inches
  • The air quality index in Prospect Heights is 11% worse than the national average
  • The pollution index in Prospect Heights is 25% better than the national average

Compare Prospect Heights, IL Weather

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      Prospect Heights Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January21°F34°F27°F4.6"
      February20°F32°F25°F1.8"
      March30°F49°F39°F2.6"
      April39°F60°F49°F4.5"
      May50°F72°F60°F3.5"
      June63°F84°F73°F3.8"
      July65°F84°F74°F5.4"
      August67°F83°F75°F12.8"
      September59°F80°F69°F6.7"
      October49°F66°F57°F1.7"
      November33°F50°F41°F2.4"
      December19°F32°F26°F1.7"

      Prospect Heights air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexProspect HeightsIllinoisNational
      Air quality index554150
      Pollution index3,795,4103,347,2955,066,862

      Prospect Heights air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality121
      Days with moderate air quality227
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality1

      Prospect Heights air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.050%
      Carbon Tetrachloride0.010%
      Lead0.003%
      Mercury0.310%

      Average monthly Prospect Heights temperature with heat index

      Prospect Heights monthly precipitation with daily maximum

      Prospect Heights monthly snow depth with daily maximum

      Prospect Heights monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Green Oaks, IL3,8323922%
      Island Lake, IL8,0253922%
      Knollwood, IL1,7293922%
      Wauconda, IL13,5493922%
      Libertyville, IL20,4353922%
      Prospect Heights, IL16,3315510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Aberdeen, WA16,3352060%
      Chickasha, OK16,342484%
      Morton, IL16,3434118%
      Fort Thomas, KY16,317548%
      Burlington, KY16,347548%
      Prospect Heights, IL16,3315510%
      Source: The Prospect Heights, IL weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.