St. Elmo, IL Weather - Forecast & Monthly Averages

TEMPERATURE	58
HUMIDITY	65
PRESSURE	102640
WIND COND.	30 7.6

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Weather Quick Facts

The highest monthly average temperature in St. Elmo for August is 75.9 degrees
The lowest monthly average temperature in St. Elmo for January is 29.5 degrees
The most monthly precipitation in St. Elmo occurs in November with 11.8 inches
The air quality index in St. Elmo is 5% better than the national average
The pollution index in St. Elmo is 43% better than the national average

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St. Elmo 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	22°F	38°F	30°F	1.7"
February	25°F	40°F	32°F	2.3"
March	36°F	54°F	44°F	1.1"
April	46°F	67°F	55°F	4.3"
May	55°F	76°F	64°F	0.0"
June	66°F	86°F	75°F	3.0"
July	66°F	86°F	75°F	7.9"
August	66°F	87°F	76°F	4.8"
September	59°F	81°F	69°F	8.6"
October	47°F	69°F	57°F	1.4"
November	36°F	56°F	46°F	11.8"
December	25°F	38°F	31°F	7.1"

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St. Elmo 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	St. Elmo	Illinois	National
Air quality index	40	41	42
Pollution index	1,561,310	3,148,694	2,726,193

St. Elmo air quality

Measurement	Total
Days measured	245
Days with good air quality	224
Days with moderate air quality	21
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.040%
Carbon Tetrachloride	0.010%
Lead	0.002%
Mercury	0.002%

Average monthly St. Elmo temperature with heat index

St. Elmo monthly precipitation with daily maximum

St. Elmo monthly snow depth with daily maximum

St. Elmo monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Brownstown, IL	839	40	20.0%
Vandalia, IL	6,615	40	20.0%
Shumway, IL	132	40	20.0%
Herrick, IL	367	40	20.0%
Edgewood, IL	470	40	20.0%
St. Elmo, IL	1,466	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Russell, GA	1,466	44	12.0%
Tonka Bay, MN	1,466	46	8.0%
Averill Park, NY	1,466	37	26.0%
Munford, AL	1,465	38	24.0%
Lake Don Pedro, CA	1,465	39	22.0%
St. Elmo, IL	1,466	40	20.0%

Source: The St. Elmo, 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.