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Forecast By County
Wednesday, August 20
Wed Thu
El Dorado
51
54
Placer
51
54
Sacramento
51
51
Yolo-Solano
40
39

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

Spare The Air Days
2014
Spare The Air Days:
2

Current Conditions: Ozone

AQI Look-up Table for Ozone concentrations
August 20, 2014 3 p.m. (PDT)
Site Name Current Ozone AQI Max Ozone AQI (PST)
Auburn   35 35 at 2 p.m.
Colfax   38 42 at 9 a.m.
Cool (Seasonal)   39 39 at 2 p.m.
Davis - UCD Campus   24 24 at 1 p.m.
Elk Grove   28 28 at 2 p.m.
Folsom   31 31 at 2 p.m.
Grass Valley  *   47 50 at 12 a.m.
Lincoln   31 31 at 2 p.m.
North Highlands   31 31 at 2 p.m.
Placerville   36 36 at 1 p.m.
Roseville - N.Sunrise/Douglas   31 31 at 1 p.m.
Sacramento - Del Paso Manor   28 28 at 2 p.m.
Sacramento - T Street   25 25 at 1 p.m.
Sloughhouse   31 31 at 2 p.m.
Vacaville   22 22 at 1 p.m.
Woodland   27 27 at 2 p.m.
Yuba City   31 31 at 1 p.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
August 20, 2014 3 p.m. (PDT)
Site Name Current PM2.5 AQI Max PM2.5 AQI (PST)
Auburn   24 24 at 3 p.m.
Colfax   36 47 at 10 a.m.
Davis - UCD Campus   31 33 at 12 p.m.
Elk Grove   44 44 at 3 p.m.
Folsom   22 23 at 11 a.m.
Grass Valley  *   Missing Missing
Lincoln   23 34 at 12 a.m.
Rio Vista   31 40 at 11 a.m.
Roseville - N.Sunrise/Douglas   37 43 at 11 a.m.
Sacramento - Del Paso Manor   13 18 at 1 p.m.
Sacramento - T Street   28 28 at 2 p.m.
Sloughhouse   21 23 at 11 a.m.
Vacaville   5 7 at 7 a.m.
Woodland   5 5 at 12 a.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