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39.29038, -76.61219

Air Quality

Updated 2 hours ago

40

Good

Primary Pollutant: O3

O3 87 µg/m3 (40)
PM2.5 1 µg/m3 (2)
CO 200 µg/m3 (2)
NO2 8 µg/m3 (4)
SO2 0 µg/m3 (0)

Source: AirNow (EPA), 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)
Fair Hill

38

O3 n/a n/a n/a 84 (38) n/a n/a
Padonia

37

O3 0 (0) n/a n/a 82 (37) n/a n/a
Howard County Near R

6

NO2 1 (4) n/a 11 (6) n/a 286 (3) n/a
Franconia

38

O3 1.8 (7) n/a n/a 84 (38) n/a 0 (0)
York

38

O3 0.3 (1) n/a n/a 84 (38) n/a n/a
Furley

36

O3 n/a n/a n/a 80 (36) n/a n/a
Rockville

37

O3 n/a n/a n/a 82 (37) n/a n/a
South Carroll

38

O3 n/a n/a n/a 84 (38) n/a n/a
Aldino

39

O3 n/a n/a n/a 86 (39) n/a n/a
Essex

39

O3 n/a n/a 5.64 (3) 86 (39) 115 (1) 0 (0)

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

Extended Forecast

 
Hour
AQI
Primary
Wind Dir
 
Wind Speed ( mph kmh)
Temp (°F°C)
Sunday, Apr 21Monday, Apr 22Tuesday, Apr 23Wednesday, Apr 24Thursday, Apr 25
2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm
36363636353230282725252525252525252525273033353841414141393836353433323131292726252525303540434549494948464442403837353432313131313131323435374043444546444240383735353433302826252524252830333539
O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3
WSWSWSSWSSWSSWSWWNWWNWNWNWNWNWNWNWNWNWNWNWNWNNWNNWNNWNNWNNWNNWNWNWNWNWNWNWNWNWNWNWWNWWNWNWNWNWWNWWNWWNWWWWSWSWSWSSWSSWSSWSSSSWSWSWSWSWSWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWNNWNNWNNWNNWNNWNNWNNENNENNENNENNENNESWSWSWSWSWSW
6 9 6 9 6 9 6 9 5 8 3 5 3 5 3 5 5 8 5 8 5 8 5 8 5 8 6 9 6 9 7 11 7 11 7 11 7 11 8 13 8 13 9 15 9 15 9 15 9 15 9 15 9 15 9 15 8 13 7 11 6 9 6 9 5 8 5 8 3 5 2 4 2 4 3 5 4 6 5 8 4 6 3 5 2 4 3 4 3 5 3 5 4 6 4 7 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 8 5 8 5 8 5 9 6 10 7 11 8 12 8 14 9 15 9 14 8 13 7 12 7 11 6 10 6 9 5 9 5 8 5 7 4 7 4 6 3 5 3 5 3 5 3 5 3 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4
66 19 66 19 67 19 66 19 65 18 64 18 63 17 60 16 59 15 58 14 57 14 57 14 56 13 55 13 55 13 55 13 55 13 55 13 57 14 60 16 63 17 65 18 67 19 68 20 69 21 70 21 70 21 70 21 69 21 67 19 65 18 63 17 62 17 61 16 60 16 60 16 59 15 59 15 58 15 58 14 59 15 60 16 61 16 64 18 68 20 71 22 73 23 75 24 77 25 77 25 78 25 78 26 76 24 74 23 72 22 71 22 70 21 69 20 67 20 66 19 65 18 65 18 65 18 64 18 64 18 64 18 64 18 65 19 67 19 68 20 70 21 71 22 73 23 72 22 71 22 70 21 69 21 68 20 67 19 66 19 64 18 63 17 62 16 60 16 59 15 59 15 59 15 58 15 58 15 58 15 58 14 60 15 62 16 64 18 65 19 67 20 69 21

Source: CAMS

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