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Forecast By County
Monday, October 20
Mon Tue
El Dorado
40
47
Placer
38
45
Sacramento
38
47
Yolo-Solano
32
38

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 20, 2014 10 a.m. (PDT)
Site Name Current Ozone AQI Max Ozone AQI (PST)
Auburn   20 26 at 12 a.m.
Colfax   24 24 at 9 a.m.
Cool (Seasonal)   25 26 at 4 a.m.
Davis - UCD Campus   17 17 at 9 a.m.
Elk Grove   17 17 at 9 a.m.
Folsom   24 24 at 9 a.m.
Grass Valley  *   28 42 at 12 a.m.
Lincoln   23 24 at 12 a.m.
North Highlands   20 20 at 9 a.m.
Placerville   28 32 at 12 a.m.
Roseville - N.Sunrise/Douglas   23 23 at 9 a.m.
Sacramento - Del Paso Manor   13 14 at 4 a.m.
Sacramento - T Street   15 18 at 4 a.m.
Sloughhouse   19 19 at 9 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 20, 2014 10 a.m. (PDT)
Site Name Current PM2.5 AQI Max PM2.5 AQI (PST)
Auburn   25 27 at 6 a.m.
Colfax   40 47 at 7 a.m.
Davis - UCD Campus   29 29 at 10 a.m.
Elk Grove   Missing Missing
Folsom   11 20 at 12 a.m.
Grass Valley  *   35 64 at 4 a.m.
Lincoln   34 38 at 4 a.m.
Rio Vista   9 20 at 5 a.m.
Roseville - N.Sunrise/Douglas   30 38 at 4 a.m.
Sacramento - Del Paso Manor   21 21 at 10 a.m.
Sacramento - T Street   34 61 at 8 a.m.
Sloughhouse   23 25 at 8 a.m.
Vacaville   0 0 at 12 a.m.
Woodland   Missing Missing

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