TODAY DEC06
TEMPERATURE41
HUMIDITY82
PRESSURE29.95
WIND COND.260 8.1
  • 3825Fri
  • 4034Sat
  • 4639Sun60%
  • 4521Mon
  • 259Tue
daynightWeather update from Chicago, Chicago-O'Hare International Airport at
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Oak Brook 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"

Did you know?

  • The highest monthly average temperature in Oak Brook for July is 76 degrees.
  • The lowest monthly average temperature in Oak Brook for January is 26 degrees.
  • The most monthly precipitation in Oak Brook occurs in August with 5.1 inches.
  • The air quality index in Oak Brook is 21% worse than the national average.
  • The pollution index in Oak Brook is 196% worse than the national average.

Compare Oak Brook, IL Weather To Other Cities

Oak Brook 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.
IndexOak BrookIllinoisNational
Air quality index604150
Pollution index14,981,3003,347,2955,066,862

Oak Brook 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

Oak Brook air quality information

PollutantTotal
Arsenic0.010%
Benzene0.140%
Carbon Tetrachloride0.030%
Lead0.020%
Mercury0.010%

Average monthly Oak Brook temperature with heat index

Oak Brook monthly precipitation with daily maximum

Oak Brook monthly snow depth with daily maximum

Oak Brook monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bellwood, IL19,1466020%
Bloomingdale, IL22,2216020%
Broadview, IL7,9156020%
Carol Stream, IL40,2286020%
Countryside, IL5,9656020%
Oak Brook, IL7,9886020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
York, SC7,9893628%
Round Lake Park, IL7,9893530%
Ilion, NY7,9863432%
Charlestown, IN7,9905510%
Summit Park, UT7,986476%
Oak Brook, IL7,9886020%
Source: The Oak Brook, 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.
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