Stillman Valley, IL Weather - Forecast & Monthly Averages

TEMPERATURE	42
HUMIDITY	96
PRESSURE	101490
WIND COND.	310 13

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Weather Quick Facts

The highest monthly average temperature in Stillman Valley for July is 74 degrees
The lowest monthly average temperature in Stillman Valley for January is 22.5 degrees
The most monthly precipitation in Stillman Valley occurs in August with 5.3 inches
The air quality index in Stillman Valley is equal to the national average
The pollution index in Stillman Valley is 37% better than the national average

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Stillman Valley 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	14°F	32°F	23°F	1.7"
February	15°F	35°F	25°F	1.6"
March	27°F	50°F	38°F	2.7"
April	37°F	64°F	50°F	4.3"
May	47°F	75°F	61°F	3.4"
June	58°F	84°F	71°F	5.1"
July	62°F	86°F	74°F	4.9"
August	61°F	84°F	72°F	5.3"
September	53°F	79°F	65°F	2.8"
October	42°F	66°F	53°F	2.9"
November	30°F	51°F	40°F	2.4"
December	18°F	36°F	27°F	2.5"

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Stillman Valley 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	Stillman Valley	Illinois	National
Air quality index	42	41	42
Pollution index	1,721,090	3,148,694	2,726,193

Stillman Valley air quality

Measurement	Total
Days measured	341
Days with good air quality	240
Days with moderate air quality	100
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.020%
Carbon Tetrachloride	0.001%
Lead	0.002%
Mercury	0.000%

Average monthly Stillman Valley temperature with heat index

Stillman Valley monthly precipitation with daily maximum

Stillman Valley monthly snow depth with daily maximum

Stillman Valley monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Rockford, IL	147,441	42	16.0%
Byron, IL	3,607	42	16.0%
Monroe Center, IL	384	42	16.0%
Lost Nation, IL	570	42	16.0%
Creston, IL	535	42	16.0%
Stillman Valley, IL	1,348	42	16.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Avondale, PA	1,348	45	10.0%
Waywayseecappo First Nation, MB	1,348	n/a
Ardmore, AL	1,347	44	12.0%
Mancos, CO	1,349	44	12.0%
Colchester, IL	1,347	29	42.0%
Stillman Valley, IL	1,348	42	16.0%

Source: The Stillman Valley, 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.