Williamsville, IL Weather - Forecast & Monthly Averages

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TEMPERATURE	61
HUMIDITY	68
PRESSURE	101286.88
WIND COND.	330 9.3

Weather Quick Facts

The highest monthly average temperature in Williamsville for July is 76.6 degrees
The lowest monthly average temperature in Williamsville for January is 28.5 degrees
The most monthly precipitation in Williamsville occurs in June with 5.5 inches
The air quality index in Williamsville is 5% better than the national average
The pollution index in Williamsville is 53% better than the national average

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Williamsville 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	38°F	29°F	2.1"
February	22°F	41°F	31°F	1.9"
March	34°F	56°F	44°F	2.9"
April	44°F	68°F	56°F	4.3"
May	54°F	77°F	65°F	4.5"
June	64°F	86°F	74°F	5.5"
July	66°F	88°F	77°F	4.3"
August	64°F	86°F	75°F	3.2"
September	57°F	81°F	68°F	3.7"
October	46°F	69°F	56°F	3.7"
November	36°F	55°F	45°F	2.5"
December	26°F	41°F	33°F	2.8"

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Williamsville 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	Williamsville	Illinois	National
Air quality index	40	41	42
Pollution index	1,277,890	3,148,694	2,726,193

Williamsville air quality

Measurement	Total
Days measured	360
Days with good air quality	287
Days with moderate air quality	73
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.050%
Carbon Tetrachloride	0.000%
Lead	0.010%
Mercury	0.002%

Average monthly Williamsville temperature with heat index

Williamsville monthly precipitation with daily maximum

Williamsville monthly snow depth with daily maximum

Williamsville monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Clear Lake, IL	399	40	20.0%
Leland Grove, IL	1,274	40	20.0%
Greenview, IL	943	40	20.0%
Dawson, IL	720	40	20.0%
Elkhart, IL	469	40	20.0%
Williamsville, IL	1,518	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Vernon Center, NJ	1,518	34	32.0%
Bartonville, TX	1,518	51	2.0%
Saint-Quentin, NB	1,518	n/a
Aberdeen, OH	1,517	14	72.0%
Woxall, PA	1,519	42	16.0%
Williamsville, IL	1,518	40	20.0%

Source: The Williamsville, 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.