TODAY MAY08
TEMPERATURE45
HUMIDITY78
PRESSURE29.97
WIND COND.130 14.8
  • 5338Sun90%
  • 5938Mon
  • 6239Tue
  • 6343Wed
  • 6547Thu
daynightWeather update from Galesburg Municipal Airport at

Key findings

  • The highest monthly average temperature in Altona for July is 74.7 degrees
  • The lowest monthly average temperature in Altona for January is 24.4 degrees
  • The most monthly precipitation in Altona occurs in September with 8.9 inches
  • The air quality index in Altona is 8% better than the national average
  • The pollution index in Altona is 66% better than the national average

Compare Altona, IL Weather

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      Altona 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°F34°F24°F3.4"
      February18°F36°F26°F3.6"
      March32°F52°F41°F3.5"
      April41°F65°F52°F6.9"
      May52°F74°F63°F7.1"
      June62°F83°F72°F7.9"
      July65°F86°F75°F8.4"
      August63°F84°F73°F7.4"
      September54°F78°F65°F8.9"
      October44°F66°F54°F5.8"
      November32°F52°F41°F4.0"
      December22°F37°F29°F4.5"

      Altona 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.
      IndexAltonaIllinoisNational
      Air quality index464150
      Pollution index1,709,2303,347,2955,066,862

      Altona air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality217
      Days with moderate air quality145
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      Altona air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.050%
      Carbon Tetrachloride0.040%
      Lead0.001%
      Mercury0.001%

      Average monthly Altona temperature with heat index

      Altona monthly precipitation with daily maximum

      Altona monthly snow depth with daily maximum

      Altona monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Williamsfield, IL5214118%
      Galva, IL2,5254118%
      East Galesburg, IL7374118%
      Victoria, IL2984118%
      La Fayette, IL2204118%
      Altona, IL535468%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Huntsville, OH5353922%
      Fairfield, PA5354216%
      Chalfant, CA535476%
      High Rolls, NM5351080%
      Matewan, WV535295490%
      Altona, IL535468%
      Source: The Altona, 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.