St. David, IL Weather - Forecast & Monthly Averages

TEMPERATURE	40
HUMIDITY	73
PRESSURE	101220
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in St. David for July is 76.3 degrees
The lowest monthly average temperature in St. David for January is 25.9 degrees
The most monthly precipitation in St. David occurs in June with 5.4 inches
The air quality index in St. David is 3% better than the national average
The pollution index in St. David is 63% better than the national average

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St. David 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	17°F	37°F	26°F	2.3"
February	18°F	39°F	28°F	2.1"
March	31°F	54°F	42°F	3.1"
April	41°F	67°F	54°F	4.7"
May	51°F	77°F	64°F	4.4"
June	62°F	85°F	73°F	5.4"
July	65°F	88°F	76°F	3.4"
August	64°F	86°F	74°F	3.5"
September	56°F	81°F	68°F	4.1"
October	44°F	68°F	55°F	3.4"
November	33°F	55°F	43°F	2.9"
December	22°F	39°F	30°F	2.7"

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St. David 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. David	Illinois	National
Air quality index	41	41	42
Pollution index	1,001,710	3,148,694	2,726,193

St. David air quality

Measurement	Total
Days measured	365
Days with good air quality	285
Days with moderate air quality	78
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.004%
Benzene	0.040%
Carbon Tetrachloride	0.000%
Lead	0.010%
Mercury	0.020%

Average monthly St. David temperature with heat index

St. David monthly precipitation with daily maximum

St. David monthly snow depth with daily maximum

St. David monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Havana, IL	3,178	41	18.0%
Fairview, IL	456	41	18.0%
Banner, IL	207	41	18.0%
Glasford, IL	897	41	18.0%
Liverpool, IL	128	41	18.0%
St. David, IL	560	41	18.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Ghent, KY	560	54	8.0%
Sorrel, LA	560	41	18.0%
New Hamilton, MS	560	39	22.0%
Fessenden, ND	560	36	28.0%
North Walpole, NH	560	34	32.0%
St. David, IL	560	41	18.0%

Source: The St. David, 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.