66°F  
  San Francisco, California | 3:56 PM
Air Quality (U.S.)

  Rise:  7:24AM | Set:  5:14PM
9hrs 50mins

  Rise:  5:17AM | Set:  2:18PM
Waning crescent


Rise: 7:24AM | Set:  5:14PM
9hrs 50mins


Rise:5:17AM | Set:2:18PM
Waning crescent

Air Quality Observations

Station Name Concentration Category
Woodland 37 ppb Good
Colfax 37 ppb Good
Lassen Volcanic NP 45 ppb Good
Yosemite NP Turtleback Dome 46 ppb Good
Sparks 25 ppb Good
Air Quality Forecast

Date Pollutant Concentration Category
14 Jan Particulates smaller than 2.5 microns 67 ppb Moderate
15 Jan Particulates smaller than 2.5 microns 82 ppb Moderate
16 Jan Particulates smaller than 2.5 microns 88 ppb Moderate
17 Jan Particulates smaller than 2.5 microns 94 ppb Moderate
18 Jan Particulates smaller than 2.5 microns n/a Moderate
19 Jan Particulates smaller than 2.5 microns n/a Moderate
20 Jan Particulates smaller than 2.5 microns n/a Moderate

Date Pollutant Concentration Category
14 Jan Particulates smaller than 2.5 microns 79 ppb Moderate
15 Jan Particulates smaller than 2.5 microns 82 ppb Moderate
16 Jan Particulates smaller than 2.5 microns 88 ppb Moderate
17 Jan Particulates smaller than 2.5 microns 94 ppb Moderate
18 Jan Particulates smaller than 2.5 microns n/a Moderate
19 Jan Particulates smaller than 2.5 microns n/a Moderate
20 Jan Particulates smaller than 2.5 microns n/a Moderate

Date Pollutant Concentration Category
14 Jan Particulates smaller than 2.5 microns 58 ppb Moderate
15 Jan Particulates smaller than 2.5 microns 81 ppb Moderate
16 Jan Particulates smaller than 2.5 microns 84 ppb Moderate
17 Jan Particulates smaller than 2.5 microns 90 ppb Moderate
18 Jan Particulates smaller than 2.5 microns n/a Moderate
19 Jan Particulates smaller than 2.5 microns n/a Moderate
20 Jan Particulates smaller than 2.5 microns n/a Moderate

Date Pollutant Concentration Category
14 Jan Particulates smaller than 2.5 microns 56 ppb Moderate
15 Jan Particulates smaller than 2.5 microns 71 ppb Moderate
16 Jan Particulates smaller than 2.5 microns 75 ppb Moderate
17 Jan Particulates smaller than 2.5 microns 81 ppb Moderate
18 Jan Particulates smaller than 2.5 microns n/a Moderate
19 Jan Particulates smaller than 2.5 microns n/a Moderate
20 Jan Particulates smaller than 2.5 microns n/a Moderate