TODAY DEC06
TEMPERATURE35
HUMIDITY64
PRESSURE30.28
WIND COND.350 17.2
  • 3933Sat
  • 4637Sun50%
  • 4217Mon50%
  • 225Tue
  • 168Wed
daynightWeather update from Rockford, Greater Rockford Airport at
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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.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January14°F32°F23°F1.7"
February15°F35°F25°F1.6"
March27°F50°F38°F2.7"
April37°F64°F50°F4.3"
May47°F75°F61°F3.4"
June58°F84°F71°F5.1"
July62°F86°F74°F4.9"
August61°F84°F72°F5.3"
September53°F79°F65°F2.8"
October42°F66°F53°F2.9"
November30°F51°F40°F2.4"
December18°F36°F27°F2.5"

Did you know?

  • The highest monthly average temperature in Stillman Valley for July is 74 degrees.
  • The lowest monthly average temperature in Stillman Valley for January is 23 degrees.
  • The most monthly precipitation in Stillman Valley occurs in August with 5.3 inches.
  • The air quality index in Stillman Valley is 38% better than the national average.
  • The pollution index in Stillman Valley is 66% better than the national average.

Compare Stillman Valley, IL Weather To Other Cities

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.
IndexStillman ValleyIllinoisNational
Air quality index314150
Pollution index1,721,0903,347,2955,066,862

Stillman Valley air quality information

MeasurementTotal
Days measured365
Days with good air quality339
Days with moderate air quality26
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Stillman Valley air quality information

PollutantTotal
Arsenic0.001%
Benzene0.020%
Carbon Tetrachloride0.001%
Lead0.002%
Mercury0.000%

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, StatePopulationAir Quality IndexNational Avg.
Creston, IL7203138%
Leaf River, IL6373138%
Mount Morris, IL3,0083138%
Rochelle, IL9,3853138%
Davis Junction, IL2,4393138%
Stillman Valley, IL1,0753138%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Westlake Corner, VA1,0753628%
Newport, DE1,0755714%
Pawnee City, NE1,0753432%
Millers Falls, MA1,0753628%
Woodlands, CA1,0755612%
Stillman Valley, IL1,0753138%
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.
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