TODAY MAR28
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 5940
  • 6855Fri30%
  • 7349Sat40%30%
  • 7059Sun50%
  • 7452Mon70%80%
daynightWeather update from Robinson Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Annapolis for July is 75.9 degrees
  • The lowest monthly average temperature in Annapolis for January is 31 degrees
  • The most monthly precipitation in Annapolis occurs in April with 7.6 inches
  • The air quality index in Annapolis is 7% worse than the national average
  • The pollution index in Annapolis is 79% better than the national average

Compare Annapolis, IL Weather

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      Annapolis 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
      January23°F40°F31°F5.3"
      February24°F43°F33°F3.4"
      March36°F57°F45°F4.0"
      April46°F69°F56°F7.6"
      May56°F77°F66°F6.3"
      June64°F86°F75°F6.7"
      July66°F87°F76°F5.7"
      August63°F86°F74°F4.9"
      September56°F82°F67°F5.9"
      October46°F70°F57°F5.6"
      November35°F56°F44°F5.6"
      December28°F44°F35°F4.9"

      Annapolis 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.
      IndexAnnapolisIllinoisNational
      Air quality index454142
      Pollution index583,0293,148,6942,726,193

      Annapolis air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality237
      Days with moderate air quality127
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Annapolis air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.000%
      Lead0.001%
      Mercury0.001%

      Average monthly Annapolis temperature with heat index

      Annapolis monthly precipitation with daily maximum

      Annapolis monthly snow depth with daily maximum

      Annapolis monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Robinson, IL7,4313628.0%
      Merom, IN1913628.0%
      Oblong, IL1,5203628.0%
      Stoy, IL1463628.0%
      Palestine, IL1,2003628.0%
      Annapolis, IL284510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Karluk, AK283138.0%
      Floriston, CA284412.0%
      Benton, IA284314.0%
      Cobden, MN283236.0%
      Biehle, MO284314.0%
      Annapolis, IL284510.0%
      Source: The Annapolis, 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.