TODAY AUG19
TEMPERATURE72
HUMIDITY84
PRESSURE30
WIND COND.40 4.7
  • 8068Mon30%80%
  • 7760Tue60%30%
  • 7759Wed
  • 8062Thu
  • 7965Fri
daynightWeather update from Chicago, Chicago-O'Hare International Airport at

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

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Compare Rosemont, IL Weather To Other Cities

Rosemont 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.
IndexRosemontIllinoisNational
Air quality index604150
Pollution index3,795,4103,347,2955,066,862

Rosemont 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

Rosemont air quality information

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

Average monthly Rosemont temperature with heat index

Rosemont monthly precipitation with daily maximum

Rosemont monthly snow depth with daily maximum

Rosemont monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Arlington Heights, IL75,7216020%
Bensenville, IL18,4316020%
Broadview, IL7,9156020%
Chicago, IL2,714,0176020%
Deerfield, IL18,6866020%
Rosemont, IL4,7156020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Mount Pleasant, TN4,7153138%
Flourtown, PA4,7155714%
Emerald Lake Hills, CA4,716484%
East Quogue, NY4,714492%
New Roads, LA4,716468%
Rosemont, IL4,7156020%
Source: The Rosemont, 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.