27°F  
  Ashburn, Virginia | 9:31 PM
Air Quality (U.S.)

  Rise:  7:16AM | Set:  4:47PM
9hrs 31mins

  Rise:  9:00PM | Set:  10:55AM
Waning gibbous


Rise: 7:16AM | Set:  4:47PM
9hrs 31mins


Rise:9:00PM | Set:10:55AM
Waning gibbous

Air Quality Observations

Station Name Concentration Category
BUTLER MANUF. CO NEAR REST 33 ppb Good
Shenandoah NP 36 ppb Good
WIDEWATER 33 ppb Good
SUMERDUCK 29 ppb Good
Air Quality Forecast

Date Pollutant Concentration Category
07 Dec Particulates smaller than 2.5 microns 62 ppb Moderate
08 Dec Particulates smaller than 2.5 microns 39 ppb Good
09 Dec Particulates smaller than 2.5 microns 39 ppb Good
10 Dec Particulates smaller than 2.5 microns 44 ppb Good
11 Dec Particulates smaller than 2.5 microns 28 ppb Good
12 Dec Particulates smaller than 2.5 microns n/a Good
13 Dec Particulates smaller than 2.5 microns n/a Good

Date Pollutant Concentration Category
07 Dec Particulates smaller than 2.5 microns 62 ppb Moderate
08 Dec Particulates smaller than 2.5 microns 39 ppb Good
09 Dec Particulates smaller than 2.5 microns 39 ppb Good
10 Dec Particulates smaller than 2.5 microns 44 ppb Good
11 Dec Particulates smaller than 2.5 microns 28 ppb Good
12 Dec Particulates smaller than 2.5 microns n/a Good
13 Dec Particulates smaller than 2.5 microns n/a Good

Date Pollutant Concentration Category
07 Dec Particulates smaller than 2.5 microns 62 ppb Moderate
08 Dec Particulates smaller than 2.5 microns 23 ppb Good
09 Dec Particulates smaller than 2.5 microns 44 ppb Good
10 Dec Particulates smaller than 2.5 microns 39 ppb Good
11 Dec Particulates smaller than 2.5 microns 33 ppb Good
12 Dec Particulates smaller than 2.5 microns n/a Good
13 Dec Particulates smaller than 2.5 microns n/a Good

Date Pollutant Concentration Category
07 Dec Particulates smaller than 2.5 microns n/a Good
08 Dec Particulates smaller than 2.5 microns n/a Good
09 Dec Particulates smaller than 2.5 microns 44 ppb Good
10 Dec Particulates smaller than 2.5 microns 39 ppb Good
11 Dec Particulates smaller than 2.5 microns 33 ppb Good
12 Dec Particulates smaller than 2.5 microns n/a Good
13 Dec Particulates smaller than 2.5 microns n/a Good