Chillicothe, IL Weather - Forecast & Monthly Averages

TEMPERATURE	72
HUMIDITY	30
PRESSURE	101460
WIND COND.	50 9.4

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Weather Quick Facts

The highest monthly average temperature in Chillicothe for July is 74.3 degrees
The lowest monthly average temperature in Chillicothe for January is 25.1 degrees
The most monthly precipitation in Chillicothe occurs in August with 8.3 inches
The air quality index in Chillicothe is 3% better than the national average
The pollution index in Chillicothe is 88% better than the national average

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Chillicothe 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	18°F	34°F	25°F	3.2"
February	19°F	36°F	27°F	3.2"
March	32°F	51°F	41°F	5.1"
April	42°F	64°F	52°F	6.5"
May	53°F	74°F	63°F	7.0"
June	62°F	82°F	72°F	7.0"
July	65°F	85°F	74°F	7.2"
August	64°F	84°F	73°F	8.3"
September	57°F	78°F	66°F	7.1"
October	45°F	65°F	54°F	6.0"
November	34°F	52°F	42°F	4.6"
December	23°F	38°F	30°F	3.8"

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Chillicothe 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	Chillicothe	Illinois	National
Air quality index	41	41	42
Pollution index	339,156	3,148,694	2,726,193

Chillicothe air quality information

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

Chillicothe air quality information

Pollutant	Total
Arsenic	0.000%
Benzene	0.020%
Carbon Tetrachloride	0.000%
Lead	0.000%
Mercury	0.000%

Average monthly Chillicothe temperature with heat index

Chillicothe monthly precipitation with daily maximum

Chillicothe monthly snow depth with daily maximum

Chillicothe monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Hopewell, IL	427	41	18.0%
Sparland, IL	390	41	18.0%
Metamora, IL	3,840	41	18.0%
Washburn, IL	1,109	41	18.0%
Bay View Gardens, IL	487	41	18.0%
Chillicothe, IL	6,326	41	18.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Carolina Beach, NC	6,324	34	32.0%
West Point, NY	6,328	36	28.0%
Perth, ON	6,328	n/a
Henderson, TN	6,323	27	46.0%
Castroville, CA	6,332	37	26.0%
Chillicothe, IL	6,326	41	18.0%

Source: The Chillicothe, 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.