Marion, IL Weather - Forecast & Monthly Averages

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TEMPERATURE	64
HUMIDITY	49
PRESSURE	101520
WIND COND.	350 22.3

Weather Quick Facts

The highest monthly average temperature in Marion for July is 78.6 degrees
The lowest monthly average temperature in Marion for January is 34.8 degrees
The most monthly precipitation in Marion occurs in June with 13.3 inches
The air quality index in Marion is 2% worse than the national average
The pollution index in Marion is 95% better than the national average

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Marion 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	27°F	44°F	35°F	2.5"
February	29°F	46°F	37°F	1.6"
March	40°F	59°F	49°F	4.1"
April	50°F	70°F	59°F	10.7"
May	58°F	78°F	68°F	10.5"
June	67°F	87°F	77°F	13.3"
July	70°F	88°F	79°F	0.5"
August	68°F	88°F	77°F	0.4"
September	61°F	81°F	70°F	1.2"
October	50°F	70°F	59°F	0.8"
November	39°F	58°F	48°F	5.8"
December	32°F	47°F	39°F	1.2"

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Marion 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	Marion	Illinois	National
Air quality index	43	41	42
Pollution index	125,359	3,148,694	2,726,193

Marion air quality

Measurement	Total
Days measured	344
Days with good air quality	269
Days with moderate air quality	74
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.003%
Carbon Tetrachloride	0.000%
Lead	0.000%
Mercury	0.000%

Average monthly Marion temperature with heat index

Marion monthly precipitation with daily maximum

Marion monthly snow depth with daily maximum

Marion monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Thompsonville, IL	538	43	14.0%
Carterville, IL	6,046	43	14.0%
Pittsburg, IL	864	43	14.0%
Colp, IL	241	43	14.0%
Johnston City, IL	3,543	43	14.0%
Marion, IL	18,022	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Redland, MD	18,022	47	6.0%
Parole, MD	18,012	46	8.0%
Hermiston, OR	18,009	38	24.0%
Bostonia, CA	18,008	64	28.0%
Centralia, WA	18,008	20	60.0%
Marion, IL	18,022	43	14.0%

Source: The Marion, 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.