Prairie du Rocher, IL Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Prairie du Rocher for July is 78 degrees
The lowest monthly average temperature in Prairie du Rocher for January is 32.9 degrees
The most monthly precipitation in Prairie du Rocher occurs in August with 10.7 inches
The air quality index in Prairie du Rocher is 28% worse than the national average
The pollution index in Prairie du Rocher is 72% better than the national average

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Prairie du Rocher 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	25°F	42°F	33°F	4.6"
February	27°F	45°F	35°F	2.4"
March	39°F	58°F	48°F	3.7"
April	48°F	69°F	58°F	6.6"
May	57°F	77°F	66°F	10.0"
June	66°F	86°F	76°F	8.8"
July	69°F	88°F	78°F	6.8"
August	67°F	87°F	76°F	10.7"
September	59°F	81°F	69°F	7.4"
October	48°F	70°F	58°F	9.0"
November	38°F	57°F	47°F	6.5"
December	30°F	45°F	37°F	7.7"

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Prairie du Rocher 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	Prairie du Rocher	Illinois	National
Air quality index	54	41	42
Pollution index	753,473	3,148,694	2,726,193

Prairie du Rocher air quality

Measurement	Total
Days measured	365
Days with good air quality	134
Days with moderate air quality	221
Days w/ poor A.Q. for sensitive groups	8
Days with unhealthy air quality	2

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.010%
Carbon Tetrachloride	0.001%
Lead	0.020%
Mercury	0.020%

Average monthly Prairie du Rocher temperature with heat index

Prairie du Rocher monthly precipitation with daily maximum

Prairie du Rocher monthly snow depth with daily maximum

Prairie du Rocher monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
St. Mary, MO	261	54	8.0%
Ellis Grove, IL	316	54	8.0%
Maeystown, IL	106	54	8.0%
Bloomsdale, MO	828	54	8.0%
Weingarten, MO	143	54	8.0%
Prairie du Rocher, IL	441	54	8.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Norman, AR	441	38	24.0%
French Gulch, CA	441	42	16.0%
Sierra Brooks, CA	441	44	12.0%
Callender, IA	441	37	26.0%
Farragut, IA	441	40	20.0%
Prairie du Rocher, IL	441	54	8.0%

Source: The Prairie du Rocher, 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.