Mount Prospect, IL Weather - Forecast & Monthly Averages

TEMPERATURE	43
HUMIDITY	45
PRESSURE	102100
WIND COND.	310 24.1

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Weather Quick Facts

The highest monthly average temperature in Mount Prospect for August is 74.6 degrees
The lowest monthly average temperature in Mount Prospect for February is 25.4 degrees
The most monthly precipitation in Mount Prospect occurs in August with 12.8 inches
The air quality index in Mount Prospect is 31% worse than the national average
The pollution index in Mount Prospect is 39% worse than the national average

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Mount Prospect 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	21°F	34°F	27°F	4.6"
February	20°F	32°F	25°F	1.8"
March	30°F	49°F	39°F	2.6"
April	39°F	60°F	49°F	4.5"
May	50°F	72°F	60°F	3.5"
June	63°F	84°F	73°F	3.8"
July	65°F	84°F	74°F	5.4"
August	67°F	83°F	75°F	12.8"
September	59°F	80°F	69°F	6.7"
October	49°F	66°F	57°F	1.7"
November	33°F	50°F	41°F	2.4"
December	19°F	32°F	26°F	1.7"

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Mount Prospect 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	Mount Prospect	Illinois	National
Air quality index	55	41	42
Pollution index	3,795,410	3,148,694	2,726,193

Mount Prospect air quality information

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

Mount Prospect air quality information

Pollutant	Total
Arsenic	0.030%
Benzene	0.050%
Carbon Tetrachloride	0.010%
Lead	0.003%
Mercury	0.310%

Average monthly Mount Prospect temperature with heat index

Mount Prospect monthly precipitation with daily maximum

Mount Prospect monthly snow depth with daily maximum

Mount Prospect monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Lake Bluff, IL	5,540	39	22.0%
Wauconda, IL	13,629	39	22.0%
Island Lake, IL	8,112	39	22.0%
Mundelein, IL	31,574	39	22.0%
Carol Stream, IL	39,447	55	10.0%
Mount Prospect, IL	54,165	55	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Grapevine, TX	54,151	51	2.0%
Tigard, OR	54,149	38	24.0%
Colton, CA	54,215	89	78.0%
Rocky Mount, NC	54,330	36	28.0%
Decatur, AL	54,344	41	18.0%
Mount Prospect, IL	54,165	55	10.0%

Source: The Mount Prospect, 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.