Arlington Heights, IL Weather - Forecast & Monthly Averages

TEMPERATURE	38
HUMIDITY	89
PRESSURE	100980
WIND COND.	340 20.5

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Weather Quick Facts

The highest monthly average temperature in Arlington Heights for July is 74.5 degrees
The lowest monthly average temperature in Arlington Heights for January is 24.9 degrees
The most monthly precipitation in Arlington Heights occurs in June with 4.7 inches
The air quality index in Arlington Heights is 31% worse than the national average
The pollution index in Arlington Heights is 450% worse than the national average

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Arlington Heights 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	1.1"
February	19°F	34°F	26°F	1.4"
March	30°F	48°F	38°F	1.8"
April	39°F	60°F	49°F	2.7"
May	49°F	71°F	60°F	3.6"
June	60°F	81°F	69°F	4.7"
July	65°F	85°F	74°F	4.0"
August	64°F	83°F	73°F	4.4"
September	56°F	76°F	66°F	2.7"
October	45°F	64°F	54°F	3.2"
November	34°F	50°F	42°F	1.7"
December	23°F	37°F	30°F	2.0"

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Arlington Heights 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	Arlington Heights	Illinois	National
Air quality index	55	41	42
Pollution index	14,981,300	3,148,694	2,726,193

Arlington Heights 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	0.140%
Carbon Tetrachloride	0.030%
Lead	0.020%
Mercury	0.010%

Average monthly Arlington Heights temperature with heat index

Arlington Heights monthly precipitation with daily maximum

Arlington Heights monthly snow depth with daily maximum

Arlington Heights monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Holiday Hills, IL	653	39	22.0%
Wauconda, IL	13,629	39	22.0%
Island Lake, IL	8,112	39	22.0%
Knollwood, IL	1,684	39	22.0%
Mundelein, IL	31,574	39	22.0%
Arlington Heights, IL	75,071	55	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Union City, CA	75,067	43	14.0%
Missoula, MT	74,994	40	20.0%
Milpitas, CA	75,182	43	14.0%
Missouri City, TX	75,348	52	4.0%
St. Joseph, MO	75,369	43	14.0%
Arlington Heights, IL	75,071	55	10.0%

Source: The Arlington Heights, 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.