Thornton, IL Weather - Forecast & Monthly Averages

TEMPERATURE	35
HUMIDITY	88
PRESSURE	101360
WIND COND.	300 11.2

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Weather Quick Facts

The highest monthly average temperature in Thornton for July is 74 degrees
The lowest monthly average temperature in Thornton for January is 25.6 degrees
The most monthly precipitation in Thornton occurs in July with 8 inches
The air quality index in Thornton is 31% worse than the national average
The pollution index in Thornton is 43% better than the national average

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Thornton 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	34°F	26°F	4.5"
February	19°F	35°F	27°F	3.6"
March	31°F	49°F	39°F	4.4"
April	40°F	62°F	50°F	5.4"
May	50°F	72°F	60°F	6.5"
June	60°F	81°F	70°F	5.8"
July	64°F	84°F	74°F	8.0"
August	63°F	82°F	72°F	7.5"
September	56°F	76°F	65°F	5.4"
October	45°F	64°F	54°F	6.2"
November	33°F	51°F	42°F	5.4"
December	24°F	38°F	31°F	3.8"

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Thornton 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	Thornton	Illinois	National
Air quality index	55	41	42
Pollution index	1,558,070	3,148,694	2,726,193

Thornton air quality

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

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.010%
Carbon Tetrachloride	0.070%
Lead	0.090%
Mercury	0.010%

Average monthly Thornton temperature with heat index

Thornton monthly precipitation with daily maximum

Thornton monthly snow depth with daily maximum

Thornton monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Crown Point, IN	30,372	37	26.0%
Ford Heights, IL	2,705	55	10.0%
Sauk Village, IL	10,319	55	10.0%
East Hazel Crest, IL	1,509	55	10.0%
Hazel Crest, IL	13,918	55	10.0%
Thornton, IL	2,308	55	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Belleair Bluffs, FL	2,307	43	14.0%
Council Grove, KS	2,307	22	56.0%
Saltville, VA	2,307	26	48.0%
Cap-Chat, QC	2,307	n/a
Ashville, AL	2,309	43	14.0%
Thornton, IL	2,308	55	10.0%

Source: The Thornton, 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.