Carol Stream, IL Weather Forecast & Monthly Average Temperatures

TEMPERATURE	38
HUMIDITY	67
PRESSURE	30.05
WIND COND.	140 5.8

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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"

Did you know?

The highest monthly average temperature in Carol Stream for July is 74 degrees.
The lowest monthly average temperature in Carol Stream for January is 24 degrees.
The most monthly precipitation in Carol Stream occurs in May with 4.5 inches.
The air quality index in Carol Stream is 20% worse than the national average.
The pollution index in Carol Stream is 195% worse than the national average.

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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	60	41	50
Pollution index	14,981,300	3,347,295	5,066,862

Carol Stream air quality information

Measurement	Total
Days measured	365
Days with good air quality	72
Days with moderate air quality	281
Days w/ poor A.Q. for sensitive groups	11
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, State	Population	Air Quality Index	National Avg.
Prestbury, IL	1,780	1	98%
Montgomery, IL	19,055	1	98%
Gilberts, IL	7,479	31	38%
Addison, IL	37,192	60	20%
Batavia, IL	26,413	60	20%
Carol Stream, IL	40,228	60	20%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Marana, AZ	40,221	46	8%
San Gabriel, CA	40,200	74	48%
Hickory, NC	40,274	38	24%
Holyoke, MA	40,280	39	22%
Hagerstown, MD	40,325	41	18%
Carol Stream, IL	40,228	60	20%

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.