Downers Grove, IL Weather - Forecast & Monthly Averages

TEMPERATURE	58
HUMIDITY	78
PRESSURE	100980
WIND COND.	140 24.1

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Weather Quick Facts

The highest monthly average temperature in Downers Grove for July is 73.4 degrees
The lowest monthly average temperature in Downers Grove for January is 24.4 degrees
The most monthly precipitation in Downers Grove occurs in August with 7.7 inches
The air quality index in Downers Grove is 31% worse than the national average
The pollution index in Downers Grove is 450% worse than the national average

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Downers Grove 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	17°F	32°F	24°F	3.1"
February	18°F	34°F	26°F	3.0"
March	31°F	49°F	39°F	5.2"
April	40°F	62°F	50°F	4.8"
May	51°F	73°F	61°F	5.9"
June	60°F	82°F	70°F	6.7"
July	64°F	84°F	73°F	4.1"
August	62°F	82°F	71°F	7.7"
September	55°F	76°F	65°F	3.2"
October	44°F	64°F	53°F	7.3"
November	33°F	50°F	41°F	3.9"
December	22°F	36°F	29°F	3.7"

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

Downers Grove 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

Downers Grove air quality information

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

Average monthly Downers Grove temperature with heat index

Downers Grove monthly precipitation with daily maximum

Downers Grove monthly snow depth with daily maximum

Downers Grove monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Summit, IL	11,171	55	10.0%
Plainfield, IL	44,857	55	10.0%
Berwyn, IL	54,850	55	10.0%
Elmwood Park, IL	24,274	55	10.0%
Stickney, IL	6,607	55	10.0%
Downers Grove, IL	49,263	55	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Troy, NY	49,253	37	26.0%
Harrisburg, PA	49,247	44	12.0%
Portage, MI	49,224	38	24.0%
Wilson, NC	49,310	36	28.0%
Cuyahoga Falls, OH	49,191	43	14.0%
Downers Grove, IL	49,263	55	10.0%

Source: The Downers Grove, 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.