TODAY OCT19
TEMPERATURE57
HUMIDITY61
PRESSURE30.08
WIND COND.220 10.3
  • 6130Sat
  • 5337Sun
  • 6242Mon
  • 6238Tue
  • 5741Wed
daynightWeather update from Salem, Salem-Leckrone Airport at
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Vandalia 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
January25°F41°F32°F3.5"
February27°F44°F34°F2.0"
March39°F58°F47°F3.7"
April48°F69°F58°F7.8"
May57°F77°F66°F5.4"
June66°F86°F76°F8.3"
July68°F88°F78°F7.4"
August66°F87°F76°F7.2"
September59°F81°F69°F8.9"
October48°F70°F58°F5.6"
November38°F57°F47°F4.2"
December30°F45°F37°F4.9"

Did you know?

  • The highest monthly average temperature in Vandalia for July is 78 degrees.
  • The lowest monthly average temperature in Vandalia for January is 32 degrees.
  • The most monthly precipitation in Vandalia occurs in September with 8.9 inches.
  • The air quality index in Vandalia is 25% better than the national average.
  • The pollution index in Vandalia is 87% better than the national average.

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Vandalia 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.
IndexVandaliaIllinoisNational
Air quality index374150
Pollution index647,2803,347,2955,066,862

Vandalia air quality information

MeasurementTotal
Days measured214
Days with good air quality201
Days with moderate air quality13
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Vandalia air quality information

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

Average monthly Vandalia temperature with heat index

Vandalia monthly precipitation with daily maximum

Vandalia monthly snow depth with daily maximum

Vandalia monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bingham, IL613726%
St. Elmo, IL1,2983726%
Brownstown, IL7103726%
Kinmundy, IL1,0073726%
St. Peter, IL3883726%
Vandalia, IL6,7583726%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Torrington, WY6,7592060%
Gibsonville, NC6,7593138%
Marion, SC6,7564020%
Taneytown, MD6,7554314%
South Weber, UT6,762492%
Vandalia, IL6,7583726%
Source: The Vandalia, 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.