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Air Quality

Updated 15 minutes ago

49

Good

Primary Pollutant: PM2.5

O3 33 µg/m3 (15)
PM2.5 12 µg/m3 (49)
CO 188 µg/m3 (2)
NO2 12 µg/m3 (6)
SO2 7 µg/m3 (3)

Source: AirNow (EPA), Virginia Dept. of Environmental Quality, 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
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
Ashburn

7

NO2 n/a n/a 15 (7) n/a n/a n/a
Hu-Beltsville

45

PM2.5 11 (45) n/a 19 (9) 54 (25) 195 (2) 0 (0)
Aurora Hills

19

NO2 n/a n/a 39 (19) n/a 458 (4) n/a
Butler Manuf. Co Nea

49

PM2.5 12 (49) n/a n/a 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
59667277828588888785837975686055504338373638384246495253545352525146423936333025222323252729323335343330282319202128344857473127222022212125282930313133353841434547474747484843363534343334363637
PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3O3O3PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3O3O3PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5
WWWSWWSWWSWWSWWSWWSWSWSWSWWSWWSWWSWWSWWWWWWNWWNWWNWWNWWNWWNWWNWNWNWNWNWNNWNNWNNNNNENEEEESESESESSESSESSESESESESSESSESSESSESSESSESSSWSWWSWWSWWNWWNWWNWWNWWNWWNWNWNWNWNNWNNWNNWNNNNNNENEENEENEENEENEENESESESESESESESESESESESESE
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 5 8 5 8 6 9 7 11 8 13 9 15 9 15 9 15 9 15 8 13 8 13 7 11 7 11 6 9 6 9 5 8 3 5 2 4 2 4 3 5 3 5 2 4 1 2 1 2 2 4 4 6 5 8 5 8 5 9 6 9 6 10 7 11 7 11 6 10 5 9 5 8 5 9 6 10 7 11 6 10 5 9 5 8 5 8 5 8 5 8 4 6 3 5 2 4 3 6 5 7 6 9 6 10 7 11 7 11 7 11 7 11 7 11 7 11 6 10 6 9 5 8 5 7 4 6 3 6 3 5 2 4 2 4 2 4 2 4 2 4 2 4 2 4 3 5 4 6 5 7 5 9 6 10 7 11 7 11 7 12 7 12 8 12 8 13 8 13
31 -1 24 -4 23 -5 21 -6 20 -7 18 -8 18 -8 17 -8 17 -8 15 -9 14 -10 14 -10 14 -10 19 -7 23 -5 28 -2 32 0 35 2 37 3 39 4 40 4 39 4 37 3 36 2 34 1 33 1 33 1 32 0 31 -1 31 -1 31 -1 30 -1 30 -1 29 -2 29 -2 29 -2 27 -3 28 -2 29 -2 30 -1 31 -1 32 0 33 1 33 1 34 1 34 1 34 1 33 1 33 1 33 0 32 0 32 0 32 0 32 0 32 0 32 0 32 0 32 0 32 0 33 0 33 1 35 1 36 2 38 3 39 4 41 5 42 6 42 6 42 6 42 6 40 4 38 3 36 2 35 2 35 1 34 1 33 1 33 0 32 0 31 0 31 -1 30 -1 30 -1 30 -1 29 -2 30 -1 32 0 33 1 34 1 36 2 37 3 37 3 37 3 37 3 36 2 36 2 36 2

Source: CAMS

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