TODAY NOV21
TEMPERATURE36
HUMIDITY56
PRESSURE30.13
WIND COND.280 5.8
  • 4421Wed
  • 3016
  • 3527Fri
  • 4538Sat100%100%
  • 5140Sun40%
daynightWeather update from Hagerstown, Washington County Regional Airport at

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San Mar 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°F42°F34°F3.7"
February22°F39°F30°F2.4"
March31°F51°F40°F6.5"
April41°F64°F52°F5.9"
May50°F74°F62°F3.6"
June62°F84°F73°F4.8"
July65°F87°F76°F6.4"
August66°F86°F75°F8.4"
September58°F81°F70°F3.6"
October50°F69°F59°F5.5"
November36°F55°F45°F4.8"
December26°F40°F33°F5.1"

Did you know?

  • The highest monthly average temperature in San Mar for July is 76 degrees.
  • The lowest monthly average temperature in San Mar for February is 30 degrees.
  • The most monthly precipitation in San Mar occurs in August with 8.4 inches.
  • The air quality index in San Mar is 17% better than the national average.
  • The pollution index in San Mar is 220% worse than the national average.

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Compare San Mar, MD Weather To Other Cities

San Mar 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.
IndexSan MarMarylandNational
Air quality index414350
Pollution index16,230,7006,283,4705,066,862

San Mar air quality information

MeasurementTotal
Days measured363
Days with good air quality276
Days with moderate air quality84
Days w/ poor A.Q. for sensitive groups3
Days with unhealthy air quality

San Mar air quality information

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

Average monthly San Mar temperature with heat index

San Mar monthly precipitation with daily maximum

San Mar monthly snow depth with daily maximum

San Mar monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Shenandoah Junction, WV6274118%
Bagtown, MD2284118%
Boonsboro, MD3,4584118%
Burkittsville, MD1474118%
Chewsville, MD1204118%
San Mar, MD2034118%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Whitfield CDP (Santa Rosa County), FL2033824%
Wrigley, TN2033138%
Magnolia, DE2033824%
Pickrell, NE2033432%
South Lima, NY2033628%
San Mar, MD2034118%
Source: The San Mar, 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.