32°F  
  Ashburn, Virginia | 03:44 AM
Air Quality (U.S.)

  Rise:  6:48AM | Set:  4:59PM
10hrs 11mins

  Rise:  11:17PM | Set:  12:59PM
Waning gibbous


Rise: 6:48AM | Set:  4:59PM
10hrs 11mins


Rise:11:17PM | Set:12:59PM
Waning gibbous

Air Quality Observations

Station Name Concentration Category
BUTLER MANUF. CO NEAR REST 28 ppb Good
Shenandoah NP 30 ppb Good
WIDEWATER 28 ppb Good
SUMERDUCK 27 ppb Good
Air Quality Forecast

Date Pollutant Concentration Category
09 Nov Particulates smaller than 2.5 microns 59 ppb Moderate
10 Nov Particulates smaller than 2.5 microns 39 ppb Good
11 Nov Particulates smaller than 2.5 microns 28 ppb Good
12 Nov Particulates smaller than 2.5 microns 28 ppb Good
13 Nov Particulates smaller than 2.5 microns 33 ppb Good
14 Nov Particulates smaller than 2.5 microns 39 ppb Good
15 Nov Particulates smaller than 2.5 microns n/a Good

Date Pollutant Concentration Category
09 Nov Particulates smaller than 2.5 microns 59 ppb Moderate
10 Nov Particulates smaller than 2.5 microns 39 ppb Good
11 Nov Particulates smaller than 2.5 microns 28 ppb Good
12 Nov Particulates smaller than 2.5 microns 28 ppb Good
13 Nov Particulates smaller than 2.5 microns 33 ppb Good
14 Nov Particulates smaller than 2.5 microns 39 ppb Good
15 Nov Particulates smaller than 2.5 microns n/a Good

Date Pollutant Concentration Category
09 Nov Particulates smaller than 2.5 microns 52 ppb Moderate
10 Nov Particulates smaller than 2.5 microns 10 ppb Good
11 Nov Particulates smaller than 2.5 microns 22 ppb Good
12 Nov Particulates smaller than 2.5 microns 28 ppb Good
13 Nov Particulates smaller than 2.5 microns 39 ppb Good
14 Nov Particulates smaller than 2.5 microns 39 ppb Good
15 Nov Particulates smaller than 2.5 microns n/a Good

Date Pollutant Concentration Category
09 Nov Particulates smaller than 2.5 microns n/a Good
10 Nov Particulates smaller than 2.5 microns n/a Good
11 Nov Particulates smaller than 2.5 microns 17 ppb Good
12 Nov Particulates smaller than 2.5 microns 22 ppb Good
13 Nov Particulates smaller than 2.5 microns 33 ppb Good
14 Nov Particulates smaller than 2.5 microns 28 ppb Good
15 Nov Particulates smaller than 2.5 microns n/a Good