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Bay Area Air Quality
Management District

 
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SMTWTFS
293012345
6789101112
13141516171819
20212223242526
272829303112
3456789
Measurement:
2012: Daily(Exceedances)
StationState: 1Hr
District0
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Daily Monthly Annual   Air Quality 
Ozone:    units:
Hourly Average Values and 24-hour changes
Raw data:Unchecked data that may contain errors
Station:Monday, May 21, 2012, Ending Hour (PST)Daily Max*
1234567891011121314151617181920212223241Hr8Hr
North Counties:
Napa 25
-5		24.2
+5		25.3
+15		15.9
+4		14.7
+3		14.3
-8		15.6
-16		20.4
-15		26
-15		29.7
-12		32.3
-13		32.321
San Rafael 27.4
-13		26.6
-10		26.5
-5		25.8
+3		24.7
+6		23.5
-3		25.4
-10		25.3
-13		23.2
-15		22.9
-16		24.2
-21		27.426
Santa Rosa 18.9
-3		19
-6		18
-8		17.2
-11		15.5
-4		12.7
-11		12.6
-13		15.9
-13		19.1
-14		21.6
-14		21.8
-12		21.817
Vallejo 25
-5		25.1
-10		25.7
-9		22.9
-8		22.7
-13		23.3
-12		24.4
-10		24.1
-11		27.2
-12		28
-15		27.5
-18		2825
Coast & Central Bay:
Oakland 23
+2		22.6
-7		22.3
-6		21.9
-5		18.7
-2		18.7
-10		18.4
-12		20.6
-17		21.9
-19		22
-17		2321
Oakland West 22.6
-14		23.7
-16		22.3
-15		19.4
-3		16.1
-15		10.7
-26		11.4
-28		16.2
-23		18.7
-20		19.8
-20		21.5
-14		23.720
San Francisco 27.1
-16		27.4
-16		27.1
-17		23
-17		20.7
-16		20.6
-18		21.7
-19		22
-18		23.1
-15		23.5
-16		24.6
-16		27.425
San Pablo 28.6
-4		28.8
-10		27.4
-9		23.8
-12		19.3
-14		21.4
-10		24
-7		25.9
-9		23.7
-11		26.7
-12		27.8
-14		28.826
Eastern District:
Bethel Island 21.3
-7		23.5
-8		23.9
-8		29.3
-3		31.4
-1		32.6
-2		34
-4		34.9
-8		35
-13		35.7
-17		37.1
-21		37.133
Concord 24.6
+0		24.8
-5		25
-7		26.4
-6		25.5
-9		24.9
-9		25.5
-11		24.6
-17		24.6
-20		27.3
-23		27.7
-26		27.725
Fairfield 24.7
-13		25.2
-10		25.2
-9		22.8
-12		21.8
-14		20.8
-14		22.7
-13		25.6
-12		28.2
-13		31.8
-13		32.2
-16		32.225
Livermore 24.8
+3		26
+0		25.5
+0		25.3
+9		26.7
+8		26.4
-6		27
-7		26.5
-10		26.6
-19		27.5
-22		27.2
-28		27.526
San Ramon 22.2
+4		22.8
+2		23.3
+3		24.9
+8		23.3
+7		21.6
-4		21.8
-8		22.3
-12		22.2
-20		23.7
-21		24.923
South Central Bay:
Hayward 25.4
-15		25.3
-19		26.3
-19		26.4
-19		24.3
-19		22.9
-19		20.9
-18		22.8
-18		23.7
-19		24.5
-21		25.3
-26		26.425
Redwood City 29.5
+10		28.7
+16		26.9
+15		15.7
-2		18.5
+10		18.7
-1		21.8
-7		23.7
-10		24.4
-13		23.9
-17		24.7
-19		29.524
Santa Clara Valley:
Cupertino 15.5
-6		18
-5		15.6
-10		15.2
-11		10.3
-11		17.1
-19		20.6
-9		23.3
+4		25.2
+4		27.1
-7		29.1
-18		29.120
Gilroy 14.9
-2		11.6
-7		11.2
-10		3.4
-12		3.3
-6		10.4
-2		24.5
-1		30.9
-4		30.5
-11		31.7
-17		33.9
-23		33.921
Los Gatos 15.4
-2		13.1
-5		11.1
-8		13.1
-8		13
-3		16.1
-9		19.3
-13		21.9
-11		23.8
-8		25.7
-14		28.8
-17		28.820
San Jose Central 20.6
-15		21.4
-12		15.8
-7		10.3
-20		16.8
-19		22.3
-16		25.4
-14		26.4
-13		27.6
-17		27.9
-22		27.921
San Martin 18
+3		21.5
+16		21.2
+14		13.6
+9		14
+9		20
+6		27.8
+3		28
-5		29.9
-10		31.4
-17		34.2
-20		34.224
Hour:1234567891011121314151617181920212223241Hr8Hr

* Note: Daily Max 1HR column is for State standard and 8HR is for National 8-Hour standard.
Ozone values exceeding the standards are displayed in red in their respective columns.