TODAY DEC29
TEMPERATURE45
HUMIDITY100
PRESSURE101630
WIND COND.320 7.6
  • 5737Mon
  • 5542Tue70%
  • 473040%
  • 3927Thu
  • 3922Fri30%
daynightWeather update from Eastern WV Regional Airport/Shepherd Field at
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Weather Quick Facts

  • The highest monthly average temperature in Antietam for July is 75.8 degrees
  • The lowest monthly average temperature in Antietam for January is 32.7 degrees
  • The most monthly precipitation in Antietam occurs in May with 4.5 inches
  • The air quality index in Antietam is 5% better than the national average
  • The pollution index in Antietam is 495% worse than the national average

Compare Antietam, MD Weather

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      Antietam 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
      January24°F43°F33°F2.3"
      February25°F45°F34°F1.7"
      March33°F56°F43°F2.9"
      April42°F68°F55°F3.7"
      May51°F76°F63°F4.5"
      June60°F84°F72°F3.9"
      July64°F88°F76°F3.3"
      August62°F86°F74°F3.1"
      September56°F80°F67°F3.3"
      October45°F68°F56°F4.2"
      November35°F57°F45°F2.4"
      December28°F47°F37°F3.2"

      Antietam 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.
      IndexAntietamMarylandNational
      Air quality index404342
      Pollution index16,230,7005,342,3672,726,193

      Antietam air quality

      MeasurementTotal
      Days measured362
      Days with good air quality306
      Days with moderate air quality54
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.130%
      Carbon Tetrachloride0.090%
      Lead0.080%
      Mercury0.020%

      Average monthly Antietam temperature with heat index

      Antietam monthly precipitation with daily maximum

      Antietam monthly snow depth with daily maximum

      Antietam monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Ranson, WV5,2173824.0%
      Hillsboro, VA1973824.0%
      Shannondale, WV3,3643824.0%
      Charles Town, WV5,9853824.0%
      Middleway, WV3963824.0%
      Antietam, MD454020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Libertyville, AL453138.0%
      Hensley, AR454510.0%
      Volcano, CA453922.0%
      Anderson, IA454020.0%
      Balltown, IA452942.0%
      Antietam, MD454020.0%
      Source: The Antietam, MD 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.