Jump to main content or area navigation.

Contact Us

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 October 2015, 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 (0.08 ppm). Maps for 2008 through 2015 are based on the 2008 ozone standard (0.075 ppm). Maps for 2016 are based on the 2015 ozone standard (0.070 ppm). Click Here for a table showing the revised AQI breakpoints for the 1997, 2008, and 2015 ozone standards.

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
0.075 0.070
1994 20 26 0.123 July 13 0.108 June 18 0.105 Aug 9 0.091 July 7
1995 17 19 0.139 July 14 0.120 June 19 0.110 Aug 21 0.107 Aug 1
1996 10 12 0.101 July 6 0.087 Aug 23 0.086 July 18 0.085 Aug 7
1997 16 17 0.106 June 30 0.100 June 22 0.098 July 15 0.098 Aug 2
1998 10 17 0.097 Aug 24 0.092 Sept 27 0.091 Sept 6 0.087 June 25
1999 13 13 0.113 July 16 0.104 July 17 0.095 June 24 0.091 July 6
2000 13 15 0.098 May 9 0.094 June 9 0.089 July 3 0.087 June 2
2001 20 25 0.118 Aug 9 0.115 June 30 0.112 July 25 0.105 Aug 2
2002 23 27 0.120 Aug 13 0.111 July 9 0.101 July 1 0.100 Aug 12
2003 7 12 0.105 June 27 0.084 Aug 22 0.083 July 27 0.082 July 5
2004 4 10 0.103 June 9 0.095 June 8 0.081 May 12 0.080 June 15
2005 12 15 0.098 June 25 0.097 Aug 13 0.096 Aug 5 0.090 April 20
2006 5 10 0.091 July 18 0.080 May 25 0.080 June 18 0.079 July 2
2007 10 18 0.092 June 1 0.091 May 25 0.091 June 27 0.089 June 26
2008 2 7 0.086 July 19 0.082 June 10 0.074 June 30 0.074 July 26
2009 0 3 0.074 April 28 0.073 May 22 0.071 Aug 20 0.069 Aug 18
2010 2 6 0.081 Sep 2 0.076 June 24 0.073 July 17 0.072 April 7
2011 4 7 0.084 July 6 0.081 July 11 0.079 June 21 0.078 June 8
2012 2 7 0.082 June 29 0.078 Aug 31 0.075 May 13 0.072 April 15
2013 2 6 0.083 June 25 0.081 May 31 0.073 May 30 0.073 Aug 21
2014 0 0 0.069 May 12 0.069 May 27 0.069 June 2 0.067 June 3
2015 1 3 0.092 June 11 0.074 Sept 18 0.072 July 1 0.070 May 8
2016 2 4 0.084 May 26 0.078 May 25 0.075 June 7 0.075 July 6

Top of Page

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
0.075 0.070
1997* 7 7 0.097 Aug 2 0.095 July 17 0.087 Aug 3 0.084 Aug 16
1998 6 8 0.090 June 26 0.081 June 25 0.081 Aug 3 0.080 May 28
1999 14 17 0.118 June 7 0.106 July 6 0.098 July 16 0.090 June 23
2000 6 10 0.126 June 10 0.087 May 8 0.085 June 9 0.085 July 2
2001 18 21 0.123 Aug 7 0.123 Aug 9 0.101 May 4 0.101 Aug 2
2002 21 26 0.112 July 2 0.101 July 18 0.098 July 1 0.094 Aug 4
2003 11 13 0.113 June 27 0.097 June 26 0.093 June 25 0.092 Aug 16
2004 5 5 0.110 June 9 0.097 June 8 0.095 May 12 0.086 May 11
2005 13 18 0.093 June 8 0.093 Aug 5 0.090 April 20 0.090 Aug 11
2006 11 16 0.130 July 18 0.100 July 17 0.093 Aug 1 0.081 July 4
2007 9 14 0.100 May 25 0.089 July 8 0.085 June 28 0.083 Aug 2
2008 4 6 0.089 June 10 0.086 July 18 0.082 July 19 0.081 July 17
2009 0 3 0.075 Aug 4 0.075 Aug 18 0.075 Aug 26 0.068 May 20
2010 4 7 0.083 July 5 0.080 July 17 0.080 Sep 1 0.079 June 24
2011 3 7 0.084 July 16 0.084 July 22 0.083 June 8 0.074 July 23
2012 7 8 0.097 June 29 0.086 June 30 0.084 Aug 31 0.082 July 18
2013 4 9 0.093 July 18 0.082 May 30 0.080 June 25 0.079 June 24
2014 0 1 0.071 Aug 5 0.066 May 12 0.066 July 22 0.063 May 27
2015 4 7 0.084 June 11 0.078 Aug 17 0.077 July 29 0.077 Aug 15
2016 2 4 0.086 May 25 0.081 May 26 0.072 July 6 0.071 July 15

*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
0.075 0.070
1994 8 13 0.108 July 13 0.094 June 18 0.094 Aug 9 0.082 July 2
1995 6 9 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 6 8 0.097 July 15 0.092 Aug 10 0.089 July 17 0.085 June 21

Top of Page

E. Providence
Operating from 1994 to Present
Year # Days > 1st High (ppm) Date 2nd High (ppm) Date 3rd High (ppm) Date 4th High (ppm) Date
0.075 0.070
1994 15 23 0.114 July 13 0.101 Aug 9 0.089 July 7 0.089 June 18
1995 13 19 0.119 July 14 0.106 Aug 1 0.099 June 18 0.096 Aug 21
1996 6 8 0.098 July 6 0.089 July 18 0.083 Aug 5 0.083 Aug 23
1997 8 11 0.097 July 15 0.091 June 30 0.090 July 17 0.084 Aug 10
1998 6 10 0.092 Aug 24 0.085 Sept 27 0.082 July 15 0.077 May 28
1999 7 14 0.096 July 16 0.088 June 24 0.084 July 17 0.080 May 31
2000 6 10 0.112 June 10 0.089 May 9 0.082 June 2 0.080 June 9
2001 19 24 0.108 June 30 0.108 Aug 7 0.106 Aug 9 0.102 Aug 2
2002 27 29 0.120 Aug 13 0.103 July 9 0.097 July 1 0.092 Aug 14
2003 7 12 0.104 June 27 0.091 Aug 22 0.087 June 25 0.085 July 27
2004 4 10 0.094 June 9 0.093 June 8 0.080 June 15 0.077 May 12
2005 7 10 0.095 June 25 0.086 June 26 0.086 Aug 5 0.085 April 20
2006 5 7 0.095 July 18 0.082 July 2 0.082 July 17 0.081 June 18
2007 11 22 0.096 May 25 0.090 June 27 0.089 June 26 0.088 Aug 3
2008 4 8 0.088 June 10 0.086 July 19 0.085 June 14 0.077 July 26
2009 1 2 0.076 April 28 0.074 May 22 0.070 Aug 18 0.066 Aug 17
2010 3 6 0.086 Sep 2 0.076 July 17 0.076 July 21 0.075 Sep 1
2011 3 4 0.078 June 8 0.078 July 6 0.076 June 21 0.073 July 11
2012 8 12 0.092 Aug 31 0.084 June 29 0.080 July 17 0.079 July 14
2013 5 6 0.085 Sept 11 0.080 July 19 0.078 July 18 0.076 May 31
2014 0 1 0.073 July 22 0.070 May 12 0.068 June 2 0.063 July 26
2015 1 4 0.089 June 11 0.075 Sept 18 0.073 Sept 8 0.071 July 1
2016 2 4 0.082 July 22 0.078 May 26 0.075 July 6 0.071 May 25

Top of Page

Ground-level Ozone Home Page.

Eight-hour Average Ozone Concentrations Page.

Area Navigation

Jump to main content.