AQI Forecast By County
Wednesday, December 28
Wed Thu
Placer
59
72
Sacramento
102
99
Yolo-Solano
63
74

Air Quality Map
The map below is a 1-hour snapshot. Click to view all hours recorded since midnight.
Current map


Current Conditions: PM2.5
AQI Look-up Table for Ozone concentrations
December 28, 2016 1 a.m. (PST)
Current AQI values represent potential health impacts within a short time period based on PM2.5 and ozone hourly averages. These values are recalculated hourly as more data become available throughout the day.
Site Name Current Ozone AQI Max Ozone AQI (PST)
Antelope - North Highlands   3 3 at 1 a.m.
Arden Arcade - Del Paso Manor   0 0 at 1 a.m.
Auburn   10 10 at 12 a.m.
Colfax   13 13 at 12 a.m.
Davis - UCD Campus   8 8 at 1 a.m.
Downtown Sacramento - T Street   0 0 at 1 a.m.
Elk Grove   4 4 at 1 a.m.
Folsom   6 6 at 1 a.m.
Grass Valley   33 33 at 12 a.m.
Lincoln   1 1 at 12 a.m.
Natomas - Goldenland Court   0 0 at 12 a.m.
Placerville   27 27 at 1 a.m.
Roseville - N.Sunrise/Douglas   6 6 at 1 a.m.
Sloughhouse   6 6 at 1 a.m.
Vacaville   1 1 at 12 a.m.
Woodland   2 2 at 12 a.m.
Yuba City   0 0 at 1 a.m.

* The Sacramento region is designated as a severe nonattainment area for the 1997 federal 8-hour ozone standard with an attainment deadline of June 2019. This federal nonattainment area includes all of Sacramento and Yolo counties and portions of El Dorado, Placer, Sutter and Solano counties. It does not include Nevada County (Grass Valley), which has its own nonattainment area for outreach, planning and regulatory purposes. Nor does it include Yuba City, which is outside of this federal boundary.


AQI Chart - English • AQI en español
AQI Look-up Table for PM2.5 concentrations
December 28, 2016 1 a.m. (PST)
Current AQI values represent potential health impacts within a short time period based on PM2.5 and ozone hourly averages. These values are recalculated hourly as more data become available throughout the day.
Site Name Current PM2.5 AQI Max PM2.5 AQI (PST)
Arden Arcade - Del Paso Manor   156 156 at 1 a.m.
Auburn   39 39 at 12 a.m.
Colfax   48 48 at 12 a.m.
Davis - UCD Campus   28 28 at 1 a.m.
Downtown Sacramento - T Street   67 67 at 1 a.m.
Elk Grove   11 11 at 1 a.m.
Folsom   54 54 at 1 a.m.
Grass Valley   14 14 at 12 a.m.
Lincoln   71 71 at 12 a.m.
Rio Vista   45 44 at 12 a.m.
Roseville - N.Sunrise/Douglas   77 77 at 1 a.m.
Sloughhouse   Missing Missing
Vacaville   57 57 at 12 a.m.
Woodland   109 109 at 12 a.m.

AQI Chart - English • AQI en español

The real-time Particulate Matter (PM2.5) data displayed on this page is for public information reporting and forecasting only. Per state and federal regulations, it is not used for attainment determination purposes.

Fine Particulate Matter, known as PM2.5, is a complex mixture that may contain soot, smoke, metals, nitrates, sulfates, dust, water and tire rubber. It can be directly emitted, as in smoke from a fire, or it can form in the atmosphere from reactions of gases such as nitrogen oxides.

Five (5) sites in Sacramento County:
  • Elk Grove
  • Folsom
  • Del Paso Manor (near Watt Ave. and El Camino Ave.)
  • Sloughhouse
  • T Street (13th & T in downtown Sacramento)
Two (2) sites in Yolo County:
  • Davis
  • Woodland
Two (2) sites in Solano County:
  • Rio Vista
  • Vacaville
Three (3) sites in Placer County:
  • Auburn
  • Lincoln
  • Roseville (N. Sunrise/Douglas Blvd.)
One (1) site in Nevada County:
  • Grass Valley