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Forecast By County
Friday, July 25
Fri Sat
El Dorado
93
104
Placer
93
104
Sacramento
93
104
Yolo-Solano
61
87

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:
1

Current Conditions: Ozone

AQI Look-up Table for Ozone concentrations
July 25, 2014 8 a.m. (PDT)
Site Name Current Ozone AQI Max Ozone AQI (PST)
Auburn   24 26 at 12 a.m.
Colfax   20 22 at 1 a.m.
Cool (Seasonal)   23 25 at 2 a.m.
Davis - UCD Campus   5 10 at 2 a.m.
Elk Grove   4 10 at 2 a.m.
Folsom   17 27 at 2 a.m.
Grass Valley  *   37 41 at 12 a.m.
Lincoln   7 18 at 2 a.m.
North Highlands   8 19 at 3 a.m.
Placerville   32 35 at 12 a.m.
Roseville - N.Sunrise/Douglas   8 25 at 1 a.m.
Sacramento - Del Paso Manor   7 13 at 3 a.m.
Sacramento - T Street   4 12 at 2 a.m.
Sloughhouse   20 25 at 1 a.m.
Vacaville   5 15 at 1 a.m.
Woodland   4 9 at 3 a.m.
Yuba City   9 24 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 - EnglishAQI en español
AQI Look-up Table for PM2.5 concentrations
July 25, 2014 8 a.m. (PDT)
Site Name Current PM2.5 AQI Max PM2.5 AQI (PST)
Auburn   14 21 at 1 a.m.
Colfax   13 21 at 4 a.m.
Davis - UCD Campus   33 36 at 3 a.m.
Elk Grove   22 35 at 2 a.m.
Folsom   20 21 at 3 a.m.
Grass Valley  *   Missing Missing
Lincoln   17 17 at 7 a.m.
Rio Vista   32 38 at 4 a.m.
Roseville - N.Sunrise/Douglas   35 38 at 2 a.m.
Sacramento - Del Paso Manor   8 19 at 2 a.m.
Sacramento - T Street   30 29 at 7 a.m.
Sloughhouse   2 17 at 2 a.m.
Vacaville   13 13 at 6 a.m.
Woodland   6 5 at 7 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