McLean, IL Weather - Forecast & Monthly Averages

TEMPERATURE	25
HUMIDITY	83
PRESSURE	103010
WIND COND.	150 7.6

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Weather Quick Facts

The highest monthly average temperature in McLean for July is 75.7 degrees
The lowest monthly average temperature in McLean for January is 27.8 degrees
The most monthly precipitation in McLean occurs in September with 11.5 inches
The air quality index in McLean is 5% worse than the national average
The pollution index in McLean is 78% better than the national average

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McLean 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	20°F	37°F	28°F	2.6"
February	21°F	39°F	29°F	3.2"
March	34°F	55°F	43°F	4.1"
April	44°F	67°F	55°F	6.7"
May	54°F	76°F	65°F	4.6"
June	63°F	85°F	74°F	8.5"
July	66°F	87°F	76°F	11.2"
August	64°F	86°F	74°F	8.1"
September	56°F	80°F	67°F	11.5"
October	46°F	68°F	56°F	6.3"
November	34°F	54°F	43°F	5.1"
December	25°F	40°F	32°F	5.3"

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McLean 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	McLean	Illinois	National
Air quality index	44	41	42
Pollution index	607,262	3,148,694	2,726,193

McLean air quality

Measurement	Total
Days measured	364
Days with good air quality	256
Days with moderate air quality	108
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.030%
Carbon Tetrachloride	0.001%
Lead	0.000%
Mercury	0.000%

Average monthly McLean temperature with heat index

McLean monthly precipitation with daily maximum

McLean monthly snow depth with daily maximum

McLean monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Lincoln, IL	13,742	40	20.0%
Armington, IL	415	44	12.0%
Heyworth, IL	3,212	44	12.0%
Downs, IL	1,417	44	12.0%
Twin Grove, IL	1,243	44	12.0%
McLean, IL	808	44	12.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Hamel, IL	808	54	8.0%
Wheelwright, KY	808	45	10.0%
Westphalia, MI	808	36	28.0%
Pleasant Hill, NC	808	45	10.0%
Bentleyville, OH	808	50	= 100
McLean, IL	808	44	12.0%

Source: The McLean, 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.