Granite City, IL Weather - Forecast & Monthly Averages

TEMPERATURE	60
HUMIDITY	60
PRESSURE	102540
WIND COND.	360 13

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Weather Quick Facts

The highest monthly average temperature in Granite City for July is 78.8 degrees
The lowest monthly average temperature in Granite City for January is 32.5 degrees
The most monthly precipitation in Granite City occurs in April with 5.3 inches
The air quality index in Granite City is 28% worse than the national average
The pollution index in Granite City is 211% worse than the national average

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Granite City 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	24°F	43°F	32°F	1.8"
February	26°F	45°F	34°F	1.6"
March	37°F	59°F	47°F	3.7"
April	47°F	70°F	58°F	5.3"
May	56°F	78°F	67°F	4.8"
June	65°F	88°F	76°F	4.4"
July	68°F	90°F	79°F	3.9"
August	66°F	89°F	77°F	3.1"
September	58°F	82°F	69°F	4.2"
October	47°F	71°F	58°F	3.1"
November	36°F	58°F	46°F	2.8"
December	29°F	45°F	36°F	3.1"

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Granite City 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	Granite City	Illinois	National
Air quality index	54	41	42
Pollution index	8,473,050	3,148,694	2,726,193

Granite City air quality

Measurement	Total
Days measured	365
Days with good air quality	134
Days with moderate air quality	221
Days w/ poor A.Q. for sensitive groups	8
Days with unhealthy air quality	2

Air quality details

Pollutant	Total
Arsenic	0.020%
Benzene	0.070%
Carbon Tetrachloride	0.020%
Lead	0.010%
Mercury	0.010%

Average monthly Granite City temperature with heat index

Granite City monthly precipitation with daily maximum

Granite City monthly snow depth with daily maximum

Granite City monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Alton, IL	26,490	54	8.0%
Glen Carbon, IL	12,468	54	8.0%
Rosewood Heights, IL	3,990	54	8.0%
Wood River, IL	10,149	54	8.0%
Caseyville, IL	4,203	54	8.0%
Granite City, IL	28,563	54	8.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Schererville, IN	28,559	55	10.0%
Northampton, MA	28,552	40	20.0%
Monterey, CA	28,575	37	26.0%
Burton, MI	28,598	38	24.0%
West Springfield Town, MA	28,527	40	20.0%
Granite City, IL	28,563	54	8.0%

Source: The Granite City, 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.