Carol Stream, IL Weather - Forecast & Monthly Averages

TEMPERATURE	56
HUMIDITY	43
PRESSURE	102340
WIND COND.	60 22.3

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Weather Quick Facts

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

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

Carol Stream 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

Carol Stream air quality information

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

Average monthly Carol Stream temperature with heat index

Carol Stream monthly precipitation with daily maximum

Carol Stream monthly snow depth with daily maximum

Carol Stream monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Prestbury, IL	1,978	0	100.0%
Montgomery, IL	19,515	0	100.0%
Gilberts, IL	7,941	42	16.0%
Lombard, IL	43,755	55	10.0%
Westmont, IL	24,677	55	10.0%
Carol Stream, IL	39,447	55	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Los Banos, CA	39,443	48	4.0%
Plant City, FL	39,437	36	28.0%
Meadow Woods, FL	39,424	39	22.0%
Lake Oswego, OR	39,476	38	24.0%
Keizer, OR	39,408	32	36.0%
Carol Stream, IL	39,447	55	10.0%

Source: The Carol Stream, 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.