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Forecast By County
Saturday, October 25
Sat Sun
El Dorado
36
40
Placer
37
41
Sacramento
38
41
Yolo-Solano
34
37

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

Spare The Air Days
2014
Spare The Air Days:
4

Current Conditions: Ozone

AQI Look-up Table for Ozone concentrations
October 25, 2014 5 p.m. (PDT)
Site Name Current Ozone AQI Max Ozone AQI (PST)
Auburn   28 31 at 9 a.m.
Colfax   27 31 at 10 a.m.
Cool (Seasonal)   33 36 at 10 a.m.
Davis - UCD Campus   28 31 at 10 a.m.
Elk Grove   31 31 at 3 p.m.
Folsom   31 34 at 10 a.m.
Grass Valley  *   29 35 at 11 a.m.
Lincoln   32 36 at 9 a.m.
North Highlands   30 34 at 10 a.m.
Placerville   30 31 at 10 a.m.
Roseville - N.Sunrise/Douglas   31 34 at 10 a.m.
Sacramento - Del Paso Manor   27 31 at 10 a.m.
Sacramento - T Street   29 32 at 10 a.m.
Sloughhouse   25 28 at 10 a.m.
Vacaville   26 31 at 10 a.m.
Woodland   29 33 at 10 a.m.
Yuba City   25 30 at 10 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
October 25, 2014 5 p.m. (PDT)
Site Name Current PM2.5 AQI Max PM2.5 AQI (PST)
Auburn   13 19 at 12 a.m.
Colfax   25 46 at 7 a.m.
Davis - UCD Campus   22 35 at 1 p.m.
Elk Grove   6 21 at 12 a.m.
Folsom   15 28 at 12 a.m.
Grass Valley  *   19 54 at 10 a.m.
Lincoln   38 38 at 3 p.m.
Rio Vista   24 23 at 4 p.m.
Roseville - N.Sunrise/Douglas   30 40 at 12 a.m.
Sacramento - Del Paso Manor   4 15 at 12 a.m.
Sacramento - T Street   30 30 at 4 p.m.
Sloughhouse   8 24 at 11 a.m.
Vacaville   27 27 at 4 p.m.
Woodland   52 63 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