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Air Quality

Updated 5 minutes ago

31

Good

Primary Pollutant: O3

O3 68 µg/m3 (31)
PM2.5 2 µg/m3 (8)
CO 177 µg/m3 (2)
NO2 8 µg/m3 (4)
SO2 10 µg/m3 (6)

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

Nearby Stations

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

4

NO2 n/a n/a 7.52 (4) n/a n/a n/a
Howard County Near R

25

NO2 1 (4) n/a 51 (25) n/a 34 (0) n/a
Franconia

25

PM2.5 6 (25) n/a n/a n/a n/a 2.62 (1)
Rockville

31

O3 2 (8) n/a n/a 68 (31) n/a n/a
South Carroll

35

O3 n/a n/a n/a 76 (35) n/a n/a
Ashburn

5

NO2 n/a n/a 9.4 (5) n/a n/a n/a
Baltimore County Nea

23

NO2 n/a n/a 47 (23) n/a n/a n/a
Pg Equestrian Center

30

O3 n/a n/a n/a 66 (30) n/a n/a
Frederick Airport

38

O3 n/a n/a n/a 84 (38) 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)
Friday, Feb 22Saturday, Feb 23Sunday, Feb 24Monday, Feb 25Tuesday, Feb 26
4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am
29282625252626283032333334343333323130283031333333312926232022252831292826252524242423232221212121222223222221252933353840393735353637363635353433323130313131323335353536353533323130292928272726
O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3
NNWNNWNNWNNNNNNNNNNNNNENENEENEENEENEENEENEENEENEENEEEEEESEESESESESESESESEESEESEESESESESESESESESSSSSSSSWSSWSSWWSWWSWWSWWWWWWWWWWWWWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWNWNWNW
5 8 3 5 5 8 5 8 5 8 6 9 7 11 7 11 6 9 5 8 5 8 3 5 3 5 3 5 3 5 3 5 3 5 2 4 2 4 2 4 2 4 2 4 2 4 3 5 3 5 3 5 3 5 3 5 5 8 5 8 6 9 6 9 7 11 7 11 7 11 7 11 7 11 6 10 5 9 5 8 5 8 5 9 6 9 5 7 3 6 2 4 4 6 5 9 7 11 7 11 7 11 7 11 9 15 12 19 14 22 16 25 18 28 19 31 21 34 23 36 24 39 22 36 20 33 18 30 17 28 16 27 16 25 15 24 14 22 13 21 14 22 15 24 16 26 17 28 18 30 19 31 20 32 20 32 20 32 20 33 21 33 21 33 19 31 18 29 17 27 15 25 14 23 13 21 11 18 10 16 9 14 7 12 6 10 5 8 5 8 5 8 5 8
41 5 38 3 38 3 36 2 37 3 39 4 40 4 41 5 42 6 43 6 43 6 43 6 43 6 42 6 40 4 39 4 38 3 38 3 37 3 37 3 36 2 35 2 35 2 34 1 34 1 33 1 33 1 32 0 33 1 35 2 37 3 37 3 38 3 38 3 38 3 38 3 38 3 38 3 38 3 38 3 38 3 38 3 38 3 38 3 38 3 38 3 38 4 39 4 39 4 40 4 41 5 42 6 45 7 49 9 52 11 55 13 57 14 60 16 59 15 57 14 56 13 53 12 51 10 48 9 46 8 45 7 43 6 42 6 40 5 39 4 38 3 38 3 37 3 36 2 36 2 35 2 37 3 38 4 40 4 42 5 43 6 45 7 44 7 43 6 42 6 41 5 40 4 39 4 38 3 37 3 36 2 35 2 34 1 33 1 33 0 32 0 32 0

Source: CAMS

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