TODAY JUN25
TEMPERATURE61
HUMIDITY93
PRESSURE30.07
WIND COND.70 6.9
  • 8166Mon
  • 8168Tue60%70%
  • 8267Wed50%
  • 8872Thu
  • 9477Fri
daynightWeather update from Lewis University Airport at

Lemont 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
January-8°F64°F28°Fn/a
February-11°F57°F25°Fn/a
March12°F79°F38°Fn/a
April21°F86°F51°Fn/a
May28°F91°F59°Fn/a
June45°F97°F71°Fn/a
July48°F99°F73°Fn/a
August50°F93°F72°Fn/a
September36°F95°F65°Fn/a
October25°F90°F53°Fn/a
November10°F73°F41°Fn/a
December-6°F55°F28°Fn/a

Did you know?

  • The highest monthly average temperature in Lemont for July is 73 degrees.
  • The lowest monthly average temperature in Lemont for February is 25 degrees.
  • The most monthly precipitation in Lemont occurs in January with 0 inches.
  • The air quality index in Lemont is 20% worse than the national average.
  • The pollution index in Lemont is 69% better than the national average.

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Compare Lemont, IL Weather To Other Cities

Lemont 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.
IndexLemontIllinoisNational
Air quality index604150
Pollution index1,558,0703,347,2955,066,862

Lemont 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

Lemont air quality information

PollutantTotal
Arsenic0.010%
Benzene0.010%
Carbon Tetrachloride0.070%
Lead0.090%
Mercury0.010%

Average monthly Lemont temperature with heat index

Lemont monthly precipitation with daily maximum

Lemont monthly snow depth with daily maximum

Lemont monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Shorewood, IL16,539198%
Richton Park, IL13,6686020%
Romeoville, IL39,7396020%
Tinley Park, IL57,1256020%
Westmont, IL25,1496020%
Lemont, IL16,5876020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Hazel Park, MI16,587524%
Griffith, IN16,5836020%
Imperial, CA16,583476%
Sunset, FL16,6024118%
Opelousas, LA16,6054412%
Lemont, IL16,5876020%
Source: The Lemont, 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.