Sterling, IL Weather - Forecast & Monthly Averages

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TEMPERATURE	37
HUMIDITY	100
PRESSURE	101760.98
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Sterling for August is 73.3 degrees
The lowest monthly average temperature in Sterling for December is 23.1 degrees
The most monthly precipitation in Sterling occurs in August with 9.2 inches
The air quality index in Sterling is equal to the national average
The pollution index in Sterling is 23% better than the national average

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Sterling 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	18°F	33°F	25°F	2.9"
February	17°F	32°F	24°F	2.5"
March	31°F	52°F	39°F	4.5"
April	39°F	65°F	50°F	6.4"
May	50°F	76°F	62°F	3.5"
June	61°F	86°F	73°F	6.1"
July	61°F	86°F	73°F	7.8"
August	64°F	85°F	73°F	9.2"
September	55°F	82°F	67°F	3.9"
October	45°F	69°F	56°F	1.9"
November	30°F	52°F	40°F	4.2"
December	17°F	31°F	23°F	1.5"

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Sterling 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	Sterling	Illinois	National
Air quality index	42	41	42
Pollution index	2,097,740	3,148,694	2,726,193

Sterling air quality

Measurement	Total
Days measured	364
Days with good air quality	268
Days with moderate air quality	96
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.060%
Carbon Tetrachloride	0.000%
Lead	0.001%
Mercury	0.300%

Average monthly Sterling temperature with heat index

Sterling monthly precipitation with daily maximum

Sterling monthly snow depth with daily maximum

Sterling monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Chadwick, IL	544	42	16.0%
Grand Detour, IL	363	42	16.0%
Morrison, IL	3,961	42	16.0%
Rock Falls, IL	9,152	42	16.0%
Coleta, IL	236	42	16.0%
Sterling, IL	15,351	42	16.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Jackson, MO	15,346	44	12.0%
Leduc County, AB	15,344	n/a
Hershey, PA	15,338	42	16.0%
Gloversville, NY	15,335	37	26.0%
Sainte-Anne-des-Plaines, QC	15,334	n/a
Sterling, IL	15,351	42	16.0%

Source: The Sterling, 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.