West Chicago, IL Weather - Forecast & Monthly Averages

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Key findings

The highest monthly average temperature in West Chicago for August is 73.7 degrees
The lowest monthly average temperature in West Chicago for February is 24.4 degrees
The most monthly precipitation in West Chicago occurs in August with 8.3 inches
The air quality index in West Chicago is 11% worse than the national average
The pollution index in West Chicago is 450% worse than the national average

Compare West Chicago, IL Weather

West Chicago Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	20°F	33°F	26°F	3.6"
February	18°F	32°F	24°F	3.0"
March	30°F	49°F	39°F	3.1"
April	39°F	62°F	49°F	5.2"
May	49°F	72°F	60°F	3.7"
June	60°F	83°F	72°F	4.9"
July	62°F	84°F	73°F	7.8"
August	64°F	84°F	74°F	8.3"
September	56°F	80°F	68°F	2.9"
October	47°F	67°F	56°F	4.3"
November	32°F	50°F	40°F	3.1"
December	18°F	32°F	25°F	2.2"

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West Chicago 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.
Index	West Chicago	Illinois	National
Air quality index	55	41	50
Pollution index	14,981,300	3,148,694	2,726,193

West Chicago air quality information

Measurement	Total
Days measured	365
Days with good air quality	121
Days with moderate air quality	227
Days w/ poor A.Q. for sensitive groups	16
Days with unhealthy air quality	1

West Chicago air quality information

Pollutant	Total
Arsenic	0.010%
Benzene	0.140%
Carbon Tetrachloride	0.030%
Lead	0.020%
Mercury	0.010%

Average monthly West Chicago temperature with heat index

West Chicago monthly precipitation with daily maximum

West Chicago monthly snow depth with daily maximum

West Chicago monthly wind speed information

Nearby cities with good air quality

City, State	Population	Air Quality Index	National Avg.
Montgomery, IL	19,055	0	100%
Sugar Grove, IL	9,288	0	100%
Oswego, IL	33,245	0	100%
Prestbury, IL	1,780	0	100%
Gilberts, IL	7,479	42	16%
West Chicago, IL	27,420	55	10%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Cornelius, NC	27,426	49	2%
Lake Jackson, TX	27,407	52	4%
Dix Hills, NY	27,403	43	14%
Reisterstown, MD	27,401	46	8%
Jeffersontown, KY	27,395	49	2%
West Chicago, IL	27,420	55	10%

Source: The West Chicago, 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.