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38.88101, -77.10428

Air Quality

Updated 2 hours ago

46

Good

Primary Pollutant: PM2.5

O3 43 µg/m3 (20)
PM2.5 11 µg/m3 (46)
PM10 17 µg/m3 (15)
CO 366 µg/m3 (4)
NO2 39 µg/m3 (19)
SO2 3 µg/m3 (2)

Source: AirNow (EPA), Virginia Dept. of Environmental Quality, District of Columbia - Department of Energy and Environment, Maryland Department of the Environment, EPA Office of Atmospheric Programs, CAMS

Nearby Stations

Station AQI Primary Pollutant PM2.5 (AQI) PM10 (AQI) NO2 (AQI) OZONE (AQI) CO (AQI) SO2 (AQI)
James S. Long Park

5

NO2 n/a n/a 9.4 (5) n/a n/a n/a
Padonia

80

PM2.5 26 (80) n/a n/a n/a n/a n/a
Howard County Near R

50

PM2.5 12 (50) n/a 24 (12) n/a 263 (3) n/a
Franconia

51

PM2.5 12 (51) n/a n/a n/a n/a 5.24 (3)
Rockville

33

PM2.5 8 (33) n/a n/a n/a n/a n/a
Essex

20

NO2 n/a n/a 41 (20) 34 (15) 344 (3) 5.24 (3)
Ashburn

7

NO2 n/a n/a 15 (7) n/a n/a n/a

Source: AirNow (EPA), Virginia Dept. of Environmental Quality, Maryland Department of the Environment

Extended Forecast

 
Hour
AQI
Primary
Wind Dir
 
Wind Speed ( mph kmh)
Temp (°F°C)
Tuesday, Jan 15Wednesday, Jan 16Thursday, Jan 17Friday, Jan 18Saturday, Jan 19
7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm
56626874808693959810010310199918371605238353234364044454646475152535552494338332823202122222222242629292928282320232832364452423226192022212021262831313131333333343536373839404035312926262629323333
PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3O3O3O3O3O3PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3O3O3O3PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5
WWSWWSWSWSWWSWWSWWSWSWSWSWWSWWSWWSWWSWWSWWSWWWWWWWWWNWWNWWNWNWNWNWNNWNNWNNNNNENNEENEENEENEESEESEESESESESESESESESESESESSESSESSESSSWSWWSWWSWWWWWNWWNWWNWNWNWNWNNWNNWNNWNENENENENENENENENENENENEESEESEESEESEESEESESESESESESESE
5 8 5 8 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 5 8 6 9 7 11 8 13 8 13 7 11 7 11 7 11 7 11 7 11 7 11 7 11 6 9 5 8 3 5 2 4 2 4 3 5 5 8 5 8 3 5 3 5 4 6 4 7 5 8 4 7 4 6 3 5 4 6 4 7 5 8 5 8 5 8 5 8 5 8 5 9 6 9 5 9 5 8 5 8 5 8 5 8 5 8 4 7 4 6 3 5 4 7 5 8 6 9 7 11 7 12 8 13 8 12 7 12 7 11 7 11 6 10 6 9 5 8 5 7 4 6 3 6 3 5 2 4 2 4 3 4 3 5 3 5 3 5 3 5 4 6 4 7 5 7 5 8 5 9 6 9 6 10 6 10 6 10 7 11 7 11 7 11
32 0 30 -1 29 -2 27 -3 27 -3 26 -3 26 -3 25 -4 25 -4 24 -4 24 -4 24 -4 24 -4 27 -3 29 -2 32 0 34 1 36 2 38 3 38 3 39 4 39 4 37 3 36 2 35 2 34 1 33 1 33 1 32 0 32 0 32 0 31 -1 31 -1 31 -1 30 -1 30 -1 29 -2 30 -1 31 -1 32 0 33 1 34 1 35 2 35 2 36 2 36 2 36 2 35 2 35 2 35 1 34 1 34 1 34 1 34 1 34 1 34 1 34 1 34 1 34 1 35 1 35 2 37 3 38 4 40 4 41 5 43 6 44 7 44 7 44 7 44 7 42 6 41 5 39 4 38 3 38 3 37 3 36 2 36 2 35 2 34 1 34 1 33 1 33 1 32 0 32 0 33 1 35 1 36 2 37 3 39 4 40 4 40 4 40 4 39 4 39 4 39 4 39 4

Source: CAMS

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