Forecast By County
Saturday, December 20
Sat Sun
Placer
53
74
Sacramento
57
80
Yolo-Solano
72
78

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

Current Conditions: Ozone

AQI Look-up Table for Ozone concentrations
December 20, 2014 2 p.m. (PST)
Site Name Current Ozone AQI Max Ozone AQI (PST)
Auburn   25 25 at 2 a.m.
Colfax   24 26 at 2 a.m.
Davis - UCD Campus   18 20 at 8 a.m.
Elk Grove   19 24 at 5 a.m.
Folsom   25 25 at 1 p.m.
Grass Valley  *   31 34 at 4 a.m.
Lincoln   6 6 at 1 p.m.
North Highlands   25 25 at 5 a.m.
Placerville   24 25 at 12 a.m.
Roseville - N.Sunrise/Douglas   20 23 at 6 a.m.
Sacramento - Del Paso Manor   22 27 at 7 a.m.
Sacramento - T Street   17 22 at 6 a.m.
Sloughhouse   25 30 at 5 a.m.
Vacaville   14 14 at 1 p.m.
Woodland   19 23 at 8 a.m.
Yuba City   21 25 at 7 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 - EnglishAQI en español
AQI Look-up Table for PM2.5 concentrations
December 20, 2014 2 p.m. (PST)
Site Name Current PM2.5 AQI Max PM2.5 AQI (PST)
Auburn   46 54 at 12 p.m.
Colfax   5 28 at 1 a.m.
Davis - UCD Campus   40 47 at 9 a.m.
Elk Grove   10 21 at 8 a.m.
Folsom   6 13 at 12 a.m.
Grass Valley  *   27 27 at 9 a.m.
Lincoln   18 18 at 2 p.m.
Rio Vista   56 56 at 2 p.m.
Roseville - N.Sunrise/Douglas   15 27 at 12 a.m.
Sacramento - Del Paso Manor   6 13 at 12 a.m.
Sacramento - T Street   27 28 at 11 a.m.
Sloughhouse   15 28 at 8 a.m.
Vacaville   72 72 at 12 p.m.
Woodland   58 57 at 2 p.m.

AQI Chart - EnglishAQI en español

There are 18 ground-level ozone monitoring sites throughout the federal nonattainment area.

Monitoring Sites - Operated By Local Air Districts
1. Woodland GP
2. Vacaville-Elmira G
3. Auburn GP
4. Colfax GPM
5. Folsom GMP
6. North Highlands GP
7. Elk Grove-Bruceville GPM
8. Del Paso Manor GPM
9. El Camino & Watt GP
10. Stockton Blvd. P
11. Sloughhouse GM
12. Goldenland Ct. GPM
Monitoring Sites - Operated By ARB
13. Walnut Grove GM
14. Davis GPM
15. Roseville GPTM
16. Cool GM
17. Placerville GPM
18. Downtown Sacramento 13th and T GPAM
Legend
G Gaseous Monitoring
P Particulate Monitoring
T Toxics Sampling
A Acid Deposition Sampling
M Meteorological Monitoring