Glen Ellyn, IL Weather - Forecast & Monthly Averages

TEMPERATURE	37
HUMIDITY	89
PRESSURE	101250
WIND COND.	320 16.6

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Weather Quick Facts

The highest monthly average temperature in Glen Ellyn for July is 73.7 degrees
The lowest monthly average temperature in Glen Ellyn for January is 23.8 degrees
The most monthly precipitation in Glen Ellyn occurs in May with 4.5 inches
The air quality index in Glen Ellyn is 31% worse than the national average
The pollution index in Glen Ellyn is 450% worse than the national average

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Glen Ellyn 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	16°F	32°F	24°F	1.4"
February	17°F	34°F	25°F	1.2"
March	30°F	49°F	38°F	2.2"
April	39°F	62°F	50°F	3.8"
May	49°F	73°F	60°F	4.5"
June	59°F	82°F	70°F	4.4"
July	63°F	85°F	74°F	4.1"
August	62°F	83°F	72°F	3.8"
September	54°F	77°F	65°F	3.4"
October	43°F	64°F	53°F	3.1"
November	32°F	50°F	40°F	1.9"
December	21°F	36°F	29°F	2.1"

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Glen Ellyn 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	Glen Ellyn	Illinois	National
Air quality index	55	41	42
Pollution index	14,981,300	3,148,694	2,726,193

Glen Ellyn air quality

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

Air quality details

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

Average monthly Glen Ellyn temperature with heat index

Glen Ellyn monthly precipitation with daily maximum

Glen Ellyn monthly snow depth with daily maximum

Glen Ellyn monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Oswego, IL	35,470	0	100.0%
Palos Heights, IL	12,460	55	10.0%
Harwood Heights, IL	8,393	55	10.0%
Wheaton, IL	53,157	55	10.0%
Hillside, IL	7,937	55	10.0%
Glen Ellyn, IL	27,741	55	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Rockledge, FL	27,739	36	28.0%
Marion, IN	27,730	37	26.0%
Kirkwood, MO	27,772	54	8.0%
Frankfort, KY	27,705	42	16.0%
Perry Hall, MD	27,778	46	8.0%
Glen Ellyn, IL	27,741	55	10.0%

Source: The Glen Ellyn, 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.