St. Augustine, IL Weather - Forecast & Monthly Averages

TEMPERATURE	26
HUMIDITY	83
PRESSURE
WIND COND.	140 9.4

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Weather Quick Facts

The highest monthly average temperature in St. Augustine for July is 74.7 degrees
The lowest monthly average temperature in St. Augustine for January is 24.4 degrees
The most monthly precipitation in St. Augustine occurs in September with 8.9 inches
The air quality index in St. Augustine is 3% better than the national average
The pollution index in St. Augustine is 63% better than the national average

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St. Augustine 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	34°F	24°F	3.4"
February	18°F	36°F	26°F	3.6"
March	32°F	52°F	41°F	3.5"
April	41°F	65°F	52°F	6.9"
May	52°F	74°F	63°F	7.1"
June	62°F	83°F	72°F	7.9"
July	65°F	86°F	75°F	8.4"
August	63°F	84°F	73°F	7.4"
September	54°F	78°F	65°F	8.9"
October	44°F	66°F	54°F	5.8"
November	32°F	52°F	41°F	4.0"
December	22°F	37°F	29°F	4.5"

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

St. Augustine 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. Augustine temperature with heat index

St. Augustine monthly precipitation with daily maximum

St. Augustine monthly snow depth with daily maximum

St. Augustine monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Good Hope, IL	405	29	42.0%
Bushnell, IL	2,789	29	42.0%
Roseville, IL	852	29	42.0%
Monmouth, IL	8,837	32	36.0%
Ellisville, IL	96	41	18.0%
St. Augustine, IL	133	41	18.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Aleknagik, AK	133	31	38.0%
Dutch Flat, CA	133	44	12.0%
Volta, CA	133	48	4.0%
Bradgate, IA	133	15	70.0%
Floris, IA	133	29	42.0%
St. Augustine, IL	133	41	18.0%

Source: The St. Augustine, 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.