Westfield, IL Weather - Forecast & Monthly Averages

TEMPERATURE	37
HUMIDITY	96
PRESSURE	101250
WIND COND.	300 33.5

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Weather Quick Facts

The highest monthly average temperature in Westfield for July is 75.5 degrees
The lowest monthly average temperature in Westfield for January is 28.4 degrees
The most monthly precipitation in Westfield occurs in April with 4.9 inches
The air quality index in Westfield is 7% worse than the national average
The pollution index in Westfield is 39% better than the national average

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Westfield 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	37°F	28°F	1.5"
February	22°F	39°F	30°F	1.7"
March	35°F	54°F	44°F	2.1"
April	45°F	66°F	55°F	4.9"
May	55°F	75°F	64°F	3.8"
June	64°F	84°F	74°F	4.7"
July	66°F	86°F	75°F	4.2"
August	64°F	85°F	74°F	2.1"
September	57°F	79°F	67°F	3.0"
October	46°F	67°F	56°F	2.9"
November	35°F	53°F	44°F	2.4"
December	27°F	41°F	33°F	2.4"

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Westfield 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	Westfield	Illinois	National
Air quality index	45	41	42
Pollution index	1,664,370	3,148,694	2,726,193

Westfield air quality

Measurement	Total
Days measured	365
Days with good air quality	237
Days with moderate air quality	127
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.040%
Carbon Tetrachloride	0.000%
Lead	0.030%
Mercury	0.003%

Average monthly Westfield temperature with heat index

Westfield monthly precipitation with daily maximum

Westfield monthly snow depth with daily maximum

Westfield monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Charleston, IL	20,141	40	20.0%
Casey, IL	2,655	40	20.0%
Greenup, IL	1,754	40	20.0%
Toledo, IL	1,163	40	20.0%
Oakland, IL	1,062	42	16.0%
Westfield, IL	570	45	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
New Stuyahok, AK	570	31	38.0%
Our Town, AL	570	52	4.0%
Alford, FL	570	35	30.0%
Charter Oak, IA	570	35	30.0%
Roberts, ID	570	27	46.0%
Westfield, IL	570	45	10.0%

Source: The Westfield, 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.