TODAY NOV19
TEMPERATURE73°F
HUMIDITY94%
PRESSURE30.04 inHg
WIND COND.0° 0 mph
  • 8165Today30%
  • 7262Wed80% | 80%
  • 6857Thu30% | 30%
  • 7060Fri30%
  • 7761Sat
daynightWeather update from Washington/Reagan National Airport, DC, on 10 Oct 04:52 am EDT

Chevy Chase Average Weather

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
January-6°F70°F28°Fn/a
February-4°F68°F33°F0.1"
March3°F81°F44°F0.2"
April28°F90°F55°F0.3"
May34°F90°F62°F0.5"
June48°F97°F72°F0.3"
July52°F91°F72°F0.5"
August50°F100°F73°F0.6"
September39°F97°F67°F0.5"
October21°F91°F54°F0.2"
November12°F73°F43°F0.1"
December5°F70°F34°F0.4"

Did you know?

  • The highest monthly average temperature in Chevy Chase for August is 73 degrees.
  • The lowest monthly average temperature in Chevy Chase for January is 28 degrees.
  • The most monthly precipitation in Chevy Chase occurs in August with 0.6 inches.
  • The air quality index in Chevy Chase is 1% better than the national average.
  • The pollution index in Chevy Chase is 188% worse than the national average.

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Chevy Chase 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.
IndexChevy ChaseWashingtonDistrict of Columbia
Air quality index493333
Pollution index14,693,9002,805,7402,805,740

Chevy Chase air quality information

MeasurementTotal
Days measured365
Days with good air quality330
Days with moderate air quality35
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Chevy Chase air quality information

PollutantTotal
Arsenic0.010%
Benzene0.020%
Carbon Tetrachloride0.005%
Lead0.060%
Mercury0.010%

Average monthly Chevy Chase temperature with heat index

Chevy Chase monthly precipitation with daily maximum

Chevy Chase monthly snow depth with daily maximum

Chevy Chase monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Woodlawn CDP (Fairfax County), VA20,8113530%
Hayfield, VA4,5013726%
Belle Haven CDP, VA6,8073922%
George Mason, VA9,9283922%
Southern Gateway, VA2,9873922%
Washington, DC633,7363334%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Denver, CO633,777548%
Seattle, WA637,850492%
Boston, MA639,594476%
Nashville, TN624,2614510%
Baltimore, MD622,271468%
Washington, DC633,7363334%
Source: The Chevy Chase, Washington, DC 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.