TODAY NOV07
TEMPERATURE51
HUMIDITY72
PRESSURE102850
WIND COND.40 11.2
  • 6041Fri
  • 5849Sat20%70%
  • 6143Sun
  • 6142
  • 6452Tue20%
daynightWeather update from Jacksonville Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Modesto for July is 76.2 degrees
  • The lowest monthly average temperature in Modesto for January is 29 degrees
  • The most monthly precipitation in Modesto occurs in June with 8 inches
  • The air quality index in Modesto is 5% better than the national average
  • The pollution index in Modesto is 58% better than the national average

Compare Modesto, IL Weather

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      Modesto 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
      January21°F39°F29°F3.2"
      February22°F41°F31°F2.9"
      March35°F56°F44°F3.7"
      April44°F68°F55°F6.8"
      May55°F76°F65°F5.2"
      June64°F85°F74°F8.0"
      July66°F87°F76°F5.2"
      August64°F85°F74°F6.3"
      September57°F80°F68°F6.6"
      October46°F68°F56°F3.3"
      November36°F55°F45°F5.0"
      December26°F41°F33°F5.3"

      Modesto 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.
      IndexModestoIllinoisNational
      Air quality index404142
      Pollution index1,150,6703,148,6942,726,193

      Modesto air quality

      MeasurementTotal
      Days measured360
      Days with good air quality287
      Days with moderate air quality73
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Modesto temperature with heat index

      Modesto monthly precipitation with daily maximum

      Modesto monthly snow depth with daily maximum

      Modesto monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Girard, IL1,7324020.0%
      Loami, IL1,0534020.0%
      Thayer, IL6224020.0%
      Standard City, IL2194020.0%
      Palmyra, IL6474020.0%
      Modesto, IL2224020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Newtok, AK2223138.0%
      Wales, AK2223824.0%
      Goshen, AL222524.0%
      Raiford, FL2223824.0%
      Corwith, IA2221570.0%
      Modesto, IL2224020.0%
      Source: The Modesto, 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.