TODAY AUG18
TEMPERATURE83
HUMIDITY57
PRESSURE29.95
WIND COND.30 8.1
  • 8365Sat
  • 8368Sun
  • 8066Mon20%70%
  • 7760Tue
  • 7760Wed
daynightWeather update from Chicago / Wheeling, Pal-Waukee Airport at

Prospect Heights Average Weather

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"

Did you know?

  • 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 20% worse than the national average.
  • The pollution index in Prospect Heights is 25% better than the national average.

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Compare Prospect Heights, IL Weather To Other Cities

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 index604150
Pollution index3,795,4103,347,2955,066,862

Prospect Heights air quality information

MeasurementTotal
Days measured365
Days with good air quality72
Days with moderate air quality281
Days w/ poor A.Q. for sensitive groups11
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, IL3,8323530%
Island Lake, IL8,0253530%
Knollwood, IL1,7293530%
Wauconda, IL13,5493530%
Libertyville, IL20,4353530%
Prospect Heights, IL16,3316020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Aberdeen, WA16,3352158%
Chickasha, OK16,342476%
Morton, IL16,343484%
Fort Thomas, KY16,317548%
Burlington, KY16,347548%
Prospect Heights, IL16,3316020%
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.