TODAY AUG16
TEMPERATURE78
HUMIDITY76
PRESSURE29.95
WIND COND. 3.4
  • 8168Fri50%30%
  • 8367Sat
  • 8470Sun
  • 8066Mon
  • 7761Tue
daynightWeather update from Chicago, Chicago Midway Airport at

River Forest 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
January20°F34°F26°F1.9"
February21°F36°F28°F1.6"
March33°F49°F40°F2.4"
April42°F62°F51°F3.6"
May52°F73°F61°F4.3"
June63°F82°F72°F4.6"
July68°F86°F76°F3.5"
August67°F83°F75°F5.1"
September60°F77°F68°F2.8"
October48°F65°F55°F3.9"
November36°F51°F43°F2.2"
December25°F37°F31°F2.2"

Did you know?

  • The highest monthly average temperature in River Forest for July is 76 degrees.
  • The lowest monthly average temperature in River Forest for January is 26 degrees.
  • The most monthly precipitation in River Forest occurs in August with 5.1 inches.
  • The air quality index in River Forest is 20% worse than the national average.
  • The pollution index in River Forest is 5% better than the national average.

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Compare River Forest, IL Weather To Other Cities

River Forest 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.
IndexRiver ForestIllinoisNational
Air quality index604150
Pollution index4,766,0003,347,2955,066,862

River Forest 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

River Forest air quality information

PollutantTotal
Arsenic0.060%
Benzene0.050%
Carbon Tetrachloride0.000%
Lead0.020%
Mercury0.090%

Average monthly River Forest temperature with heat index

River Forest monthly precipitation with daily maximum

River Forest monthly snow depth with daily maximum

River Forest monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Addison, IL37,1926020%
Bensenville, IL18,4316020%
Bolingbrook, IL74,3206020%
Burbank, IL29,0876020%
Cicero, IL83,9726020%
River Forest, IL11,2176020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Jefferson Hills, PA11,2145612%
Scottdale, GA11,221524%
Maltby, WA11,221492%
Destrehan, LA11,2114510%
Port St. John, FL11,2233628%
River Forest, IL11,2176020%
Source: The River Forest, 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.