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38.89511, -77.03637

Air Quality

Updated 2 hours ago

39

Good

Primary Pollutant: PM2.5

O3 32 µg/m3 (15)
PM2.5 9 µg/m3 (39)
PM10 31 µg/m3 (28)
CO 366 µg/m3 (4)
NO2 35 µg/m3 (17)
SO2 4 µg/m3 (2)

Source: AirNow (EPA), District of Columbia - Department of Energy and Environment, Virginia Dept. of Environmental Quality, 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

9

NO2 n/a n/a 19 (9) n/a n/a n/a
Howard County Near R

59

PM2.5 16 (59) n/a 49 (24) n/a 286 (3) n/a
Franconia

40

PM2.5 9.6 (40) n/a n/a n/a n/a 5.24 (3)
Rockville

45

PM2.5 11 (45) n/a n/a n/a n/a n/a
Essex

25

O3 n/a n/a 9.4 (5) 56 (25) 229 (2) 2.62 (1)
Ashburn

13

NO2 n/a n/a 26 (13) n/a n/a n/a
Baltimore County Nea

15

NO2 n/a n/a 30 (15) n/a n/a n/a
Hu-Beltsville

45

PM2.5 11 (45) n/a 17 (8) 44 (20) 229 (2) 2.62 (1)

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)
Thursday, Dec 13Friday, Dec 14Saturday, Dec 15Sunday, Dec 16Monday, Dec 17
11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am
51494647475457616467697072727374767982858885827261595657576064677072736863564739323028262527293132323230282521202121202020212222212121212121212121202020191818181818181818181717161515131415182223
PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3NO2O3O3O3O3
SESESESEESEESEESEEEEENEENEENEENEENEENEENEENEENEENEENEEEEEESESEESEEENEENEENEENEENEENEENENENENENENENENNENNENNENENENENNENNENNENENENENENENEENEENEENEENEENEENENENENENENENENNENNENNENNENNENNENNNNNNNNWNNWNNWNNWNNWNNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNW
5 8 3 5 3 5 3 5 5 8 5 8 5 8 5 8 5 8 5 8 5 8 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 3 5 3 5 5 8 5 8 5 8 6 9 6 9 7 11 7 11 7 11 6 9 5 7 3 5 5 9 7 12 9 15 8 12 6 10 5 8 6 9 7 11 8 13 7 11 6 9 5 8 5 9 6 10 7 11 6 10 5 9 5 8 5 8 5 8 5 8 5 8 5 8 5 8 5 8 5 8 5 8 5 9 6 9 6 9 6 9 6 9 6 9 6 9 6 9 6 9 6 10 6 10 6 10 7 11 7 11 7 11 7 11 6 10 6 9 5 9 5 8 5 8 5 8 5 8 5 8 5 9 6 9 6 9 7 11 7 12 8 13 9 14
44 7 45 7 46 8 47 8 46 8 46 8 44 7 43 6 42 6 41 5 40 4 40 4 40 4 39 4 39 4 38 3 38 3 38 3 37 3 37 3 37 3 38 3 40 4 42 6 44 7 46 8 47 8 48 9 48 9 47 8 47 8 46 8 46 8 46 8 46 8 46 8 46 8 45 7 45 7 45 7 45 7 45 7 45 7 45 7 45 7 46 8 48 9 49 9 50 10 51 11 52 11 52 11 51 11 51 11 50 10 49 9 48 9 47 9 47 8 46 8 46 8 46 8 45 7 45 7 44 7 44 7 44 7 43 6 43 6 44 6 44 7 45 7 45 7 45 7 46 8 45 7 45 7 44 7 43 6 43 6 42 6 41 5 41 5 40 5 40 4 39 4 39 4 39 4 39 4 38 4 38 4 38 3 38 3 40 4 41 5 43 6 45 7

Source: CAMS

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