TODAY SEP20
TEMPERATURE68
HUMIDITY87
PRESSURE30
WIND COND.30 4.7
  • 9071Thu40%
  • 7453Fri20%
  • 6651Sat
  • 7055Sun
  • 7561Mon
daynightWeather update from Chicago / Wheeling, Pal-Waukee Airport at
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Mount Prospect 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"

Did you know?

  • The highest monthly average temperature in Mount Prospect for August is 75 degrees.
  • The lowest monthly average temperature in Mount Prospect for February is 25 degrees.
  • The most monthly precipitation in Mount Prospect occurs in August with 12.8 inches.
  • The air quality index in Mount Prospect is 20% worse than the national average.
  • The pollution index in Mount Prospect is 25% better than the national average.

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Mount Prospect 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.
IndexMount ProspectIllinoisNational
Air quality index604150
Pollution index3,795,4103,347,2955,066,862

Mount Prospect 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

Mount Prospect air quality information

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

Average monthly Mount Prospect temperature with heat index

Mount Prospect monthly precipitation with daily maximum

Mount Prospect monthly snow depth with daily maximum

Mount Prospect monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Wauconda, IL13,5493530%
Island Lake, IL8,0253530%
Mundelein, IL31,5503530%
Lake Bluff, IL5,7583530%
Vernon Hills, IL25,9106020%
Mount Prospect, IL54,5526020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Greenwood, IN54,5645918%
Normal, IL54,5343628%
Dublin, CA54,523484%
Pocatello, ID54,5923530%
Rosemead, CA54,5077448%
Mount Prospect, IL54,5526020%
Source: The Mount Prospect, 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.