TODAY MAY28
TEMPERATURE70
HUMIDITY84
PRESSURE29.9
WIND COND.160 4.7
  • 7663Thu50%50%
  • 7554Fri40%
  • 7457Sat
  • 7456Sun
  • 7659Mon
daynightWeather update from Southern Illinois Airport at
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Alto Pass 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
January30°F44°F36°F7.5"
February28°F46°F36°F4.9"
March38°F61°F49°F4.2"
April45°F67°F56°F5.8"
May55°F79°F67°F4.4"
June65°F87°F76°F5.4"
July66°F87°F76°F3.6"
August69°F92°F80°F3.8"
September60°F85°F71°F5.0"
October48°F73°F59°F5.5"
November38°F59°F48°F11.1"
December28°F45°F36°F6.7"

Did you know?

  • The highest monthly average temperature in Alto Pass for August is 80 degrees.
  • The lowest monthly average temperature in Alto Pass for February is 36 degrees.
  • The most monthly precipitation in Alto Pass occurs in November with 11.1 inches.
  • The air quality index in Alto Pass is 28% better than the national average.
  • The pollution index in Alto Pass is 54% better than the national average.

Compare Alto Pass, IL Weather To Other Cities

      vs

      Alto Pass 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.
      IndexAlto PassIllinoisNational
      Air quality index364150
      Pollution index2,331,2203,347,2955,066,862

      Alto Pass air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality298
      Days with moderate air quality67
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Alto Pass air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.030%
      Carbon Tetrachloride0.004%
      Lead0.002%
      Mercury0.260%

      Average monthly Alto Pass temperature with heat index

      Alto Pass monthly precipitation with daily maximum

      Alto Pass monthly snow depth with daily maximum

      Alto Pass monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Anna, IL4,3323628%
      Cobden, IL1,3593628%
      Jonesboro, IL2,0053628%
      Dongola, IL7873628%
      Makanda, IL5903628%
      Alto Pass, IL3823628%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      St. Stephens, AL3823138%
      New Bloomington, OH3823040%
      Bay View Gardens, IL382484%
      New Haven, IL382484%
      Ute, IA3824118%
      Alto Pass, IL3823628%
      Source: The Alto Pass, 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.