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Key findings

  • The highest monthly average temperature in Greater Rosemont for July is 82 degrees
  • The lowest monthly average temperature in Greater Rosemont for January is 37 degrees
  • The most monthly precipitation in Greater Rosemont occurs in July with 5 inches
  • The air quality index in Greater Rosemont is 8% better than the national average
  • The pollution index in Greater Rosemont is 39% better than the national average

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      Greater Rosemont 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"

      Greater Rosemont 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.
      IndexGreater RosemontBaltimoreMaryland
      Air quality index464643
      Pollution index3,089,8009,823,9206,283,470

      Greater Rosemont 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

      Greater Rosemont air quality information

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

      Average monthly Greater Rosemont temperature with heat index

      Greater Rosemont monthly precipitation with daily maximum

      Greater Rosemont monthly snow depth with daily maximum

      Greater Rosemont monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Carney, MD29,889468%
      Arbutus, MD21,455468%
      Ellicott City, MD70,780468%
      Middle River, MD26,631468%
      Rosedale, MD18,641468%
      Baltimore, MD621,000468%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Portland, OR620,5893824%
      Oklahoma City, OK620,015484%
      Las Vegas, NV613,295548%
      Louisville, KY611,573492%
      Milwaukee, WI598,6724412%
      Baltimore, MD621,000468%
      Source: The Greater Rosemont, 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.