Region 1: EPA New England

RHODE ISLAND

For 1999 and after, click on the date for the corresponding eight-hour average peak ozone map for that day.

In March 2008, EPA revised the 8-hour ozone standard and changed the Air Quality Index (AQI) to align with this new standard. Maps for days in 2007 and earlier are based on the 1997 8-hour ozone standard. Maps for 2008 are based on the new 2008 ozone standard and the revised AQI. Click Here for a table showing the revised AQI breakpoints for the 2008 ozone standard.

W. Greenwich | Narragansett | Providence | E. Providence

W. Greenwich Operating from 1982 to Present
Year	# Days >		1st High (ppm)	Date	2nd High (ppm)	Date	3rd High (ppm)	Date	4th High (ppm)	Date
Year	0.084	0.075	1st High (ppm)	Date	2nd High (ppm)	Date	3rd High (ppm)	Date	4th High (ppm)	Date
1994	7	20	0.123	July 13	0.108	June 18	0.105	Aug 9	0.091	July 7
1995	11	17	0.139	July 14	0.120	June 19	0.110	Aug 21	0.107	Aug 1
1996	4	10	0.101	July 6	0.087	Aug 23	0.086	July 18	0.085	Aug 7
1997	10	16	0.106	June 30	0.100	June 22	0.098	July 15	0.098	Aug 2
1998	4	10	0.097	Aug 24	0.092	Sept 27	0.091	Sept 6	0.087	June 25
1999	7	13	0.113	July 16	0.104	July 17	0.095	June 24	0.091	July 6
2000	5	13	0.098	May 9	0.094	June 9	0.089	July 3	0.087	June 2
2001	13	20	0.118	Aug 9	0.115	June 30	0.112	July 25	0.105	Aug 2
2002	12	23	0.120	Aug 13	0.111	July 9	0.101	July 1	0.100	Aug 12
2003	1	7	0.105	June 27	0.084	Aug 22	0.083	July 27	0.082	July 5
2004	2	4	0.103	June 9	0.095	June 8	0.081	May 12	0.080	June 15
2005	5	12	0.098	June 25	0.097	Aug 13	0.096	Aug 5	0.090	April 20
2006	1	5	0.091	July 18	0.080	May 25	0.080	June 18	0.079	July 2
2007	6	10	0.092	June 1	0.091	May 25	0.091	June 27	0.089	June 26
2008	1	2	0.086	July 19	0.082	June 10	0.074	June 30	0.074	July 26
2009	0	0	0.074	April 28	0.073	May 22	0.071	Aug 20	0.069	Aug 18
2010	0	2	0.081	Sep 2	0.076	June 24	0.073	July 17	0.072	April 7
2011	0	4	0.084	July 6	0.081	July 11	0.079	June 21	0.078	June 8
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Narragansett Operating from July 1997 to Present
Year	# Days >		1st High (ppm)	Date	2nd High (ppm)	Date	3rd High (ppm)	Date	4th High (ppm)	Date
Year	0.084	0.075	1st High (ppm)	Date	2nd High (ppm)	Date	3rd High (ppm)	Date	4th High (ppm)	Date
1997*	3	7	0.097	Aug 2	0.095	July 17	0.087	Aug 3	0.084	Aug 16
1998	1	6	0.090	June 26	0.081	June 25	0.081	Aug 3	0.080	May 28
1999	11	14	0.118	June 7	0.106	July 6	0.098	July 16	0.090	June 23
2000	4	6	0.126	June 10	0.087	May 8	0.085	June 9	0.085	July 2
2001	11	18	0.123	Aug 7	0.123	Aug 9	0.101	May 4	0.101	Aug 2
2002	8	21	0.112	July 2	0.101	July 18	0.098	July 1	0.094	Aug 4
2003	8	11	0.113	June 27	0.097	June 26	0.093	June 25	0.092	Aug 16
2004	4	5	0.110	June 9	0.097	June 8	0.095	May 12	0.086	May 11
2005	5	13	0.093	June 8	0.093	Aug 5	0.090	April 20	0.090	Aug 11
2006	3	11	0.130	July 18	0.100	July 17	0.093	Aug 1	0.081	July 4
2007	3	9	0.100	May 25	0.089	July 8	0.085	June 28	0.083	Aug 2
2008	2	4	0.089	June 10	0.086	July 18	0.082	July 19	0.081	July 17
2009	0	0	0.075	Aug 4	0.075	Aug 18	0.075	Aug 26	0.068	May 20
2010	0	4	0.083	July 5	0.080	July 17	0.080	Sep 1	0.079	June 24
2011	0	3	0.084	July 16	0.084	July 22	0.083	June 8	0.074	July 23
*Site did not meet 75% minimum data completeness requirement Top of Page

Providence Operating from 1982 to 1997
Year	# Days >		1st High (ppm)	Date	2nd High (ppm)	Date	3rd High (ppm)	Date	4th High (ppm)	Date
Year	0.084	0.075	1st High (ppm)	Date	2nd High (ppm)	Date	3rd High (ppm)	Date	4th High (ppm)	Date
1994	3	8	0.108	July 13	0.094	June 18	0.094	Aug 9	0.082	July 2
1995	5	6	0.110	July 14	0.097	June 18	0.094	Aug 1	0.089	Aug 21
1996	1	1	0.085	July 6	0.070	Aug 23	0.069	July 16	0.064	June 1
1997	4	6	0.097	July 15	0.092	Aug 10	0.089	July 17	0.085	June 21
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EProvidence Operating from 1994 to Present
Year	# Days >		1st High (ppm)	Date	2nd High (ppm)	Date	3rd High (ppm)	Date	4th High (ppm)	Date
Year	0.084	0.075	1st High (ppm)	Date	2nd High (ppm)	Date	3rd High (ppm)	Date	4th High (ppm)	Date
1994	5	15	0.114	July 13	0.101	Aug 9	0.089	July 7	0.089	June 18
1995	7	13	0.119	July 14	0.106	Aug 1	0.099	June 18	0.096	Aug 21
1996	2	6	0.098	July 6	0.089	July 18	0.083	Aug 5	0.083	Aug 23
1997	3	8	0.097	July 15	0.091	June 30	0.090	July 17	0.084	Aug 10
1998	2	6	0.092	Aug 24	0.085	Sept 27	0.082	July 15	0.077	May 28
1999	2	7	0.096	July 16	0.088	June 24	0.084	July 17	0.080	May 31
2000	2	6	0.112	June 10	0.089	May 9	0.082	June 2	0.080	June 9
2001	10	19	0.108	June 30	0.108	Aug 7	0.106	Aug 9	0.102	Aug 2
2002	9	27	0.120	Aug 13	0.103	July 9	0.097	July 1	0.092	Aug 14
2003	4	7	0.104	June 27	0.091	Aug 22	0.087	June 25	0.085	July 27
2004	2	4	0.094	June 9	0.093	June 8	0.080	June 15	0.077	May 12
2005	4	7	0.095	June 25	0.086	June 26	0.086	Aug 5	0.085	April 20
2006	1	5	0.095	July 18	0.082	July 2	0.082	July 17	0.081	June 18
2007	4	11	0.096	May 25	0.090	June 27	0.089	June 26	0.088	Aug 3
2008	3	4	0.088	June 10	0.086	July 19	0.085	June 14	0.077	July 26
2009	0	1	0.076	April 28	0.074	May 22	0.070	Aug 18	0.066	Aug 17
2010	1	3	0.086	Sep 2	0.076	July 17	0.076	July 21	0.075	Sep 1
2011	0	3	0.078	June 8	0.078	July 6	0.076	June 21	0.073	July 11
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RHODE ISLAND

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