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Forecast By County
Tuesday, September 02
Tue Wed
El Dorado
58
67
Placer
58
67
Sacramento
54
61
Yolo-Solano
44
47

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
September 2, 2014 4 a.m. (PDT)
Site Name Current Ozone AQI Max Ozone AQI (PST)
Auburn   30 30 at 2 a.m.
Colfax   27 27 at 2 a.m.
Cool (Seasonal)   30 30 at 2 a.m.
Davis - UCD Campus   12 13 at 1 a.m.
Elk Grove   12 17 at 12 a.m.
Folsom   28 28 at 2 a.m.
Grass Valley  *   43 45 at 12 a.m.
Lincoln   18 23 at 12 a.m.
North Highlands   25 25 at 2 a.m.
Placerville   38 39 at 12 a.m.
Roseville - N.Sunrise/Douglas   24 24 at 2 a.m.
Sacramento - Del Paso Manor   20 20 at 2 a.m.
Sacramento - T Street   15 16 at 12 a.m.
Sloughhouse   25 25 at 2 a.m.
Vacaville   21 21 at 1 a.m.
Woodland   13 13 at 1 a.m.
Yuba City   24 25 at 12 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
September 2, 2014 4 a.m. (PDT)
Site Name Current PM2.5 AQI Max PM2.5 AQI (PST)
Auburn   37 44 at 12 a.m.
Colfax   50 50 at 3 a.m.
Davis - UCD Campus   59 65 at 12 a.m.
Elk Grove   67 67 at 3 a.m.
Folsom   59 63 at 12 a.m.
Grass Valley  *   Missing Missing
Lincoln   51 53 at 12 a.m.
Rio Vista   66 66 at 2 a.m.
Roseville - N.Sunrise/Douglas   59 59 at 12 a.m.
Sacramento - Del Paso Manor   72 71 at 3 a.m.
Sacramento - T Street   60 68 at 12 a.m.
Sloughhouse   58 60 at 12 a.m.
Vacaville   24 24 at 2 a.m.
Woodland   48 70 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