This demonstration page uses our WeatherBlox Air Quality layout. Learn more.

Air Quality

Updated an hour ago

45

Good

Primary Pollutant: PM2.5

O3 34 µg/m3 (15)
PM2.5 11 µg/m3 (45)
CO 197 µg/m3 (2)
NO2 23 µg/m3 (11)
SO2 14 µg/m3 (7)

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

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
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
56555353535761646770727477788083858891949794928273696565656972768083878278726764605652525151525048423736363330292827262626272828282624211919191919191919191818181818181818181816151313131316192224
PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5PM2.5O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3O3
ESEESEESEESEESEESEESEEESEEEEEEEEENEENEENEEEEEEESESESSESEESEEEENEENEENEENEENENENENENENENENNENNENNENNENNENNENNENNENNENENENENNENNENNENENENENENENENNENNENNENNENNENNENNNNNNNNNNNNNWNWNWNWNWNWWNWWNWWNWWNWWNWWNWWNWWNWWNWWNW
2 4 3 5 3 5 3 5 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 2 4 2 4 2 4 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 5 8 5 8 6 9 6 9 6 9 5 7 3 6 2 4 4 7 6 10 8 13 6 10 5 8 3 5 5 8 6 10 8 13 7 12 7 11 6 9 6 10 7 11 7 11 7 11 6 10 6 9 6 9 5 9 5 8 5 8 5 8 5 8 5 8 5 8 5 8 5 9 6 9 6 9 6 10 6 10 6 10 7 11 7 11 7 11 7 11 7 11 7 11 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 8 12 9 14 10 15
42 6 43 6 45 7 45 7 45 7 44 7 42 6 41 5 39 4 39 4 38 3 37 3 37 3 36 2 36 2 36 2 35 2 35 2 35 2 35 2 34 1 35 2 37 3 39 4 41 5 43 6 44 7 45 7 45 7 45 7 44 7 44 7 44 7 43 6 43 6 43 6 43 6 43 6 43 6 43 6 43 6 43 6 43 6 43 6 43 6 44 7 46 8 47 8 48 9 49 9 50 10 50 10 49 10 49 9 48 9 47 8 46 8 45 7 45 7 45 7 44 7 44 6 43 6 43 6 42 6 42 6 42 5 41 5 41 5 41 5 42 6 42 6 43 6 43 6 44 7 43 6 43 6 42 6 41 5 41 5 40 4 40 4 39 4 39 4 39 4 38 4 38 3 38 3 38 3 37 3 37 3 37 3 37 3 39 4 40 5 42 6 44 6

Source: CAMS

Powered by AerisWeather