Collinsville, IL Weather Forecast & Monthly Average Temperatures

TEMPERATURE	66°F
HUMIDITY	28%
PRESSURE	30.17 inHg
WIND COND.	90° 20.7 mph

Collinsville Average Weather

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	4°F	72°F	36°F	3.1"
February	3°F	74°F	33°F	1.3"
March	10°F	84°F	47°F	2.9"
April	24°F	92°F	57°F	2.4"
May	35°F	94°F	66°F	3.0"
June	51°F	99°F	76°F	2.0"
July	56°F	99°F	78°F	2.8"
August	55°F	105°F	78°F	1.3"
September	38°F	95°F	69°F	3.2"
October	27°F	93°F	57°F	1.5"
November	16°F	82°F	46°F	2.0"
December	6°F	65°F	36°F	1.2"

Did you know?

The highest monthly average temperature in Collinsville for July is 78 degrees.
The lowest monthly average temperature in Collinsville for February is 33 degrees.
The most monthly precipitation in Collinsville occurs in September with 3.2 inches.
The air quality index in Collinsville is 20% worse than the national average.
The pollution index in Collinsville is 19% worse than the national average.

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Collinsville 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	Collinsville	Illinois	National
Air quality index	60	41	50
Pollution index	6,055,640	3,347,295	5,066,862

Collinsville air quality information

Measurement	Total
Days measured	365
Days with good air quality	99
Days with moderate air quality	231
Days w/ poor A.Q. for sensitive groups	33
Days with unhealthy air quality	2

Collinsville air quality information

Pollutant	Total
Arsenic	0.010%
Benzene	0.070%
Carbon Tetrachloride	0.040%
Lead	0.100%
Mercury	0.230%

Average monthly Collinsville temperature with heat index

Collinsville monthly precipitation with daily maximum

Collinsville monthly snow depth with daily maximum

Collinsville monthly wind speed information

Nearby cities with good air quality

City, State	Population	Air Quality Index	National Avg.
Spanish Lake, MO	19,105	60	20%
Alhambra, IL	523	60	20%
Cahokia, IL	14,574	60	20%
East Alton, IL	6,171	60	20%
Fairmont City, IL	2,349	60	20%
Collinsville, IL	24,855	60	20%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Moscow, ID	24,855	10	80%
Coronado, CA	24,852	61	22%
Galt, CA	24,848	57	14%
Elmwood Park, IL	24,845	60	20%
Austin, MN	24,841	37	26%
Collinsville, IL	24,855	60	20%

Source: The Collinsville, 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.