TODAY FEB28
TEMPERATURE40
HUMIDITY79
PRESSURE29.97
WIND COND.120 11.2
  • 5225Sun30%
  • 3720Mon
  • 4334Tue
  • 5435Wed
  • 5234Thu
daynightWeather update from Chicago, Chicago Midway Airport at

Key findings

  • 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 11% worse than the national average
  • The pollution index in River Forest is 6% better than the national average

Compare River Forest, IL Weather

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      River Forest 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
      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"

      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 index554150
      Pollution index4,766,0003,347,2955,066,862

      River Forest 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

      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.
      Woodridge, IL33,3315510%
      Willow Springs, IL5,6775510%
      Hodgkins, IL1,9605510%
      Maywood, IL24,0295510%
      Glendale Heights, IL34,3955510%
      River Forest, IL11,2175510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Jefferson Hills, PA11,2145612%
      Scottdale, GA11,221524%
      Maltby, WA11,2214510%
      Port St. John, FL11,2233922%
      Destrehan, LA11,2114510%
      River Forest, IL11,2175510%
      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.