TODAY MAY22
TEMPERATURE83
HUMIDITY50
PRESSURE29.98
WIND COND.
  • 8461Wed
  • 8561Thu
  • 8766Fri
  • 8769Sat
  • 8668Sun
daynightWeather update from Fairfield, Fairfield Municipal Airport at

West Salem 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-2°F68°F33°Fn/a
February0°F68°F33°Fn/a
March14°F81°F46°Fn/a
April23°F88°F56°Fn/a
May36°F95°F65°Fn/a
June50°F99°F74°Fn/a
July52°F97°F75°Fn/a
August48°F99°F75°Fn/a
September39°F95°F69°Fn/a
October27°F93°F57°Fn/a
November14°F77°F46°Fn/a
December3°F72°F34°Fn/a

Did you know?

  • The highest monthly average temperature in West Salem for August is 75 degrees.
  • The lowest monthly average temperature in West Salem for January is 33 degrees.
  • The most monthly precipitation in West Salem occurs in January with 0 inches.
  • The air quality index in West Salem is 33% better than the national average.
  • The pollution index in West Salem is 90% better than the national average.

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Compare West Salem, IL Weather To Other Cities

West Salem 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.
IndexWest SalemIllinoisNational
Air quality index334150
Pollution index500,0043,347,2955,066,862

West Salem 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

West Salem air quality information

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

Average monthly West Salem temperature with heat index

West Salem monthly precipitation with daily maximum

West Salem monthly snow depth with daily maximum

West Salem monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bone Gap, IL2233334%
Claremont, IL2723334%
Sumner, IL5,0943334%
Bridgeport, IL1,4253334%
Albion, IL2,2083334%
West Salem, IL8583334%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Cowley, WY8582452%
Mertzon, TX8583040%
Germanton, NC8584118%
Pleasant View, PA8583628%
West Lebanon, IN858524%
West Salem, IL8583334%
Source: The West Salem, 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.