TODAY MAR28
TEMPERATURE53
HUMIDITY80
PRESSURE101690
WIND COND.
  • 6143Fri
  • 6551Sat20%50%
  • 7148Sun30%
  • 6149Mon60%80%
  • 6449Tue80%60%
daynightWeather update from Baltimore, Inner Harbor at
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Weather Quick Facts

  • The highest monthly average temperature in Jonestown for July is 81.8 degrees
  • The lowest monthly average temperature in Jonestown for January is 37 degrees
  • The most monthly precipitation in Jonestown occurs in July with 5 inches
  • The air quality index in Jonestown is 9% worse than the national average
  • The pollution index in Jonestown is 260% worse than the national average

Compare Baltimore, MD Weather

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      Jonestown 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
      January32°F44°F37°F2.7"
      February32°F45°F38°F2.7"
      March40°F55°F47°F3.4"
      April51°F68°F59°F3.8"
      May60°F76°F67°F3.9"
      June70°F86°F77°F4.5"
      July75°F90°F82°F5.0"
      August73°F87°F79°F4.6"
      September67°F80°F73°F4.4"
      October55°F69°F62°F4.6"
      November45°F58°F50°F2.4"
      December37°F48°F42°F4.1"

      Jonestown 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.
      IndexJonestownBaltimoreMaryland
      Air quality index464643
      Pollution index9,823,9209,823,9205,342,367

      Jonestown air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality223
      Days with moderate air quality129
      Days w/ poor A.Q. for sensitive groups13
      Days with unhealthy air quality0

      Jonestown air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.070%
      Carbon Tetrachloride0.050%
      Lead0.030%
      Mercury0.140%

      Average monthly Jonestown temperature with heat index

      Jonestown monthly precipitation with daily maximum

      Jonestown monthly snow depth with daily maximum

      Jonestown monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Fort Meade, MD11,340468.0%
      Maryland City, MD17,681468.0%
      Brooklyn Park, MD15,163468.0%
      Ferndale, MD17,732468.0%
      Linthicum, MD10,116468.0%
      Baltimore, MD602,274468.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Milwaukee, WI592,6494412.0%
      Louisville, KY618,733492.0%
      Albuquerque, NM560,447536.0%
      Surrey, BC560,150n/a 
      Las Vegas, NV644,594548.0%
      Baltimore, MD602,274468.0%
      Source: The Jonestown, Baltimore, 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.