TODAY AUG16
TEMPERATURE75
HUMIDITY92
PRESSURE29.99
WIND COND.200 5.8
  • 8467Fri60%60%
  • 8466Sat
  • 8469Sun
  • 8467Mon
  • 8060Tue
daynightWeather update from Olney-Noble Airport at

Olney 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
January24°F41°F31°F5.3"
February26°F43°F33°F3.7"
March38°F57°F46°F4.5"
April47°F69°F57°F8.3"
May56°F77°F66°F6.2"
June65°F86°F75°F8.8"
July67°F88°F77°F7.5"
August65°F87°F75°F7.1"
September58°F81°F68°F8.8"
October47°F70°F57°F6.4"
November36°F57°F45°F7.2"
December29°F45°F36°F5.8"

Did you know?

  • The highest monthly average temperature in Olney for July is 77 degrees.
  • The lowest monthly average temperature in Olney for January is 31 degrees.
  • The most monthly precipitation in Olney occurs in September with 8.8 inches.
  • The air quality index in Olney is 33% better than the national average.
  • The pollution index in Olney is 90% better than the national average.

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Compare Olney, IL Weather To Other Cities

Olney 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.
IndexOlneyIllinoisNational
Air quality index334150
Pollution index500,0043,347,2955,066,862

Olney air quality information

MeasurementTotal
Days measured359
Days with good air quality347
Days with moderate air quality12
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Olney air quality information

PollutantTotal
Arsenic0.001%
Benzene0.020%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

Average monthly Olney temperature with heat index

Olney monthly precipitation with daily maximum

Olney monthly snow depth with daily maximum

Olney monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Calhoun, IL1843334%
Sumner, IL5,0943334%
Claremont, IL2723334%
Parkersburg, IL1463334%
West Salem, IL8583334%
Olney, IL8,9313334%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Derby, CO8,930548%
Canonsburg, PA8,9335612%
Makaha, HI8,9343040%
Liberty, TX8,9364412%
Madeira, OH8,924548%
Olney, IL8,9313334%
Source: The Olney, 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.