TODAY NOV25
TEMPERATURE53
HUMIDITY89
PRESSURE100750
WIND COND.190 7.6
  • 5223Mon
  • 4133Tue
  • 4526Wed30%40%
  • 3618
  • 3216Fri
daynightWeather update from Peoria - General Downing-Peoria International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in St. David for July is 76.3 degrees
  • The lowest monthly average temperature in St. David for January is 25.9 degrees
  • The most monthly precipitation in St. David occurs in June with 5.4 inches
  • The air quality index in St. David is 3% better than the national average
  • The pollution index in St. David is 63% better than the national average

Compare St. David, IL Weather

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      St. David 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
      January17°F37°F26°F2.3"
      February18°F39°F28°F2.1"
      March31°F54°F42°F3.1"
      April41°F67°F54°F4.7"
      May51°F77°F64°F4.4"
      June62°F85°F73°F5.4"
      July65°F88°F76°F3.4"
      August64°F86°F74°F3.5"
      September56°F81°F68°F4.1"
      October44°F68°F55°F3.4"
      November33°F55°F43°F2.9"
      December22°F39°F30°F2.7"

      St. David 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. DavidIllinoisNational
      Air quality index414142
      Pollution index1,001,7103,148,6942,726,193

      St. David air quality

      MeasurementTotal
      Days measured365
      Days with good air quality285
      Days with moderate air quality78
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.004%
      Benzene0.040%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.020%

      Average monthly St. David temperature with heat index

      St. David monthly precipitation with daily maximum

      St. David monthly snow depth with daily maximum

      St. David monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Cuba, IL1,0664118.0%
      Smithfield, IL1814118.0%
      Dunfermline, IL3804118.0%
      Hanna City, IL1,3474118.0%
      Norris, IL2554118.0%
      St. David, IL5604118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ghent, KY560548.0%
      Sorrel, LA5604118.0%
      New Hamilton, MS5603922.0%
      Fessenden, ND5603628.0%
      North Walpole, NH5603432.0%
      St. David, IL5604118.0%
      Source: The St. David, 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.