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AQI Forecast by County
Thursday, October 19
Thu Fri
El Dorado
57
50
Placer
57
50
Sacramento
68
53
Yolo-Solano
78
55

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


Federal and State Ground-level Ozone Exceedances

Sacramento Region

Data since 2004 are preliminary and will be replaced with official data as they become available.

Type  2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997
State
1-hour
Ozone
10 16 11 10 7 22 24 15 28 41 18 47 44 36 53 61 57 46 56 49 25
Federal
1-hour
Ozone
0 0 0 0 0 1 0 0 0 7 1 8 6 0 6 10 4 7 7 13 4
Federal
8-hour
Ozone
53 51 17* 31 17 50 44 23 40 56** 18*** 43 36 24 43 49 46 37 48 Standard not
in effect***


* A new federal 8-hour ozone standard of .070 parts per million began in October 2015.
** A new federal 8-hour ozone standard of .075 parts per million began in 2008.
*** The federal 8-hour ozone standard of .084 parts per million was in effect from 1999-2007.
**** There was no federal 8-hour ozone standard prior to 1999.

Note: As of June 15, 2005, the federal 1-hour ozone standard was revoked, but it still has regulatory applicability in some areas.