TODAY NOV22
TEMPERATURE41
HUMIDITY70
PRESSURE100240
WIND COND.280 35.3
  • 5545Sat
  • 5845Sun
  • 6152Mon
  • 6240Tue
  • 5241Wed
daynightWeather update from Tangier Island Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Deal Island for July is 79.2 degrees
  • The lowest monthly average temperature in Deal Island for January is 37 degrees
  • The most monthly precipitation in Deal Island occurs in August with 7.4 inches
  • The air quality index in Deal Island is 3% better than the national average
  • The pollution index in Deal Island is 7% better than the national average

Compare Deal Island, MD Weather

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      Deal Island 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
      January27°F48°F37°F3.2"
      February30°F51°F39°F2.6"
      March36°F58°F46°F3.5"
      April45°F70°F57°F3.5"
      May55°F77°F66°F3.5"
      June63°F86°F74°F5.0"
      July70°F90°F79°F5.6"
      August66°F87°F76°F7.4"
      September61°F82°F71°F4.9"
      October50°F72°F60°F5.2"
      November37°F61°F49°F1.8"
      December33°F54°F43°F2.9"

      Deal Island 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.
      IndexDeal IslandMarylandNational
      Air quality index414342
      Pollution index2,538,1605,342,3672,726,193

      Deal Island air quality

      MeasurementTotal
      Days measured365
      Days with good air quality304
      Days with moderate air quality58
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.002%
      Benzene0.030%
      Carbon Tetrachloride0.004%
      Lead0.010%
      Mercury0.003%

      Average monthly Deal Island temperature with heat index

      Deal Island monthly precipitation with daily maximum

      Deal Island monthly snow depth with daily maximum

      Deal Island monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Allen, MD4193628.0%
      Princess Anne, MD3,5253628.0%
      Mount Vernon, MD1,0164118.0%
      Whitehaven, MD1684118.0%
      Dames Quarter, MD1054118.0%
      Deal Island, MD3164118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      College Station, AR3164510.0%
      Twin Groves, AR3164510.0%
      Ellis Grove, IL316548.0%
      Sandborn, IN316198.0%
      Otis, KS3161570.0%
      Deal Island, MD3164118.0%
      Source: The Deal Island, 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.