TODAY OCT22
TEMPERATURE39
HUMIDITY62
PRESSURE30.04
WIND COND.220 3.4
  • 6239Mon
  • 5136Tue
  • 4836Wed
  • 4938Thu
  • 5140Fri
daynightWeather update from Chicago, Chicago-O'Hare International Airport at
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Harwood Heights 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
January16°F34°F25°F2.3"
February18°F36°F27°F2.3"
March29°F49°F39°F2.8"
April38°F63°F50°F3.9"
May48°F73°F60°F5.4"
June59°F83°F71°F4.5"
July64°F86°F75°F5.2"
August63°F84°F74°F4.4"
September56°F78°F66°F3.6"
October44°F65°F54°F3.4"
November32°F52°F42°F2.3"
December21°F38°F29°F2.9"

Did you know?

  • The highest monthly average temperature in Harwood Heights for July is 75 degrees.
  • The lowest monthly average temperature in Harwood Heights for January is 25 degrees.
  • The most monthly precipitation in Harwood Heights occurs in May with 5.4 inches.
  • The air quality index in Harwood Heights is 20% worse than the national average.
  • The pollution index in Harwood Heights is 25% better than the national average.

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Compare Harwood Heights, IL Weather To Other Cities

Harwood 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.
IndexHarwood HeightsIllinoisNational
Air quality index604150
Pollution index3,795,4103,347,2955,066,862

Harwood 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

Harwood Heights air quality information

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

Average monthly Harwood Heights temperature with heat index

Harwood Heights monthly precipitation with daily maximum

Harwood Heights monthly snow depth with daily maximum

Harwood Heights monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Summit, IL11,4096020%
Westmont, IL25,1496020%
Wilmette, IL27,3676020%
Bedford Park, IL5816020%
Berwyn, IL56,4146020%
Harwood Heights, IL8,6286020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Rapid Valley, SD8,6294314%
Angola, IN8,624476%
Incline Village, NV8,6214412%
Zuni Pueblo, NM8,6351766%
East Grand Forks, MN8,6363530%
Harwood Heights, IL8,6286020%
Source: The Harwood 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.