TODAY AUG21
TEMPERATURE72
HUMIDITY100
PRESSURE29.76
WIND COND.180 11.4
  • 7762Tue20%
  • 7857Wed
  • 7961Thu
  • 8169Fri50%30%
  • 8871Sat20%
daynightWeather update from St. Louis Regional Airport at

St. Jacob Average Weather

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
January23°F42°F32°F5.6"
February25°F45°F34°F3.8"
March37°F59°F47°F7.1"
April47°F70°F57°F10.2"
May56°F77°F66°F8.9"
June65°F87°F76°F9.2"
July68°F89°F78°F8.0"
August66°F88°F76°F7.8"
September58°F82°F69°F8.4"
October47°F70°F57°F8.6"
November36°F57°F46°F6.9"
December28°F45°F36°F8.2"

Did you know?

  • The highest monthly average temperature in St. Jacob for July is 78 degrees.
  • The lowest monthly average temperature in St. Jacob for January is 32 degrees.
  • The most monthly precipitation in St. Jacob occurs in April with 10.2 inches.
  • The air quality index in St. Jacob is 20% worse than the national average.
  • The pollution index in St. Jacob is 19% worse than the national average.

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Compare St. Jacob, IL Weather To Other Cities

St. Jacob 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.
IndexSt. JacobIllinoisNational
Air quality index604150
Pollution index6,055,6403,347,2955,066,862

St. Jacob air quality information

MeasurementTotal
Days measured365
Days with good air quality99
Days with moderate air quality231
Days w/ poor A.Q. for sensitive groups33
Days with unhealthy air quality2

St. Jacob air quality information

PollutantTotal
Arsenic0.010%
Benzene0.070%
Carbon Tetrachloride0.040%
Lead0.100%
Mercury0.230%

Average monthly St. Jacob temperature with heat index

St. Jacob monthly precipitation with daily maximum

St. Jacob monthly snow depth with daily maximum

St. Jacob monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Breese, IL4,5903922%
Germantown, IL1,1593922%
Albers, IL1,1276020%
Edwardsville, IL25,0446020%
Grantfork, IL3606020%
St. Jacob, IL1,3546020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Lincoln Beach, OR1,3541766%
Mulberry, IN1,355524%
Wakeman, OH1,3555510%
Camargo, KY1,3553334%
Bernice, LA1,355492%
St. Jacob, IL1,3546020%
Source: The St. Jacob, 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.