Statistical data set
Figure 13: Annual mean concentrations of O3 in the UK, 1987 to 2023
Updated 30 April 2024
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| Site type | Year | Number of sites | Mean daily maximum 8-hour mean ozone concentration (µg/m3) | 95% confidence interval for 'All sites' (+/-) |
|---|---|---|---|---|
| Rural Background | 1987 | 5 | 55.73371991 | 6.721002491 |
| Rural Background | 1988 | 12 | 65.64981285 | 4.659026534 |
| Rural Background | 1989 | 14 | 67.86464614 | 4.972930965 |
| Rural Background | 1990 | 15 | 69.71884823 | 4.508190549 |
| Rural Background | 1991 | 12 | 66.79427101 | 4.455004374 |
| Rural Background | 1992 | 14 | 67.8641859 | 5.035280424 |
| Rural Background | 1993 | 14 | 65.21502892 | 5.309471716 |
| Rural Background | 1994 | 14 | 69.38386976 | 3.869373646 |
| Rural Background | 1995 | 15 | 70.04185377 | 3.851553623 |
| Rural Background | 1996 | 15 | 66.70551436 | 3.360383385 |
| Rural Background | 1997 | 15 | 65.87804203 | 3.291996423 |
| Rural Background | 1998 | 17 | 68.05100491 | 3.233699123 |
| Rural Background | 1999 | 17 | 72.206833 | 2.941632471 |
| Rural Background | 2000 | 15 | 67.16857708 | 2.901309375 |
| Rural Background | 2001 | 16 | 66.1410939 | 3.111451539 |
| Rural Background | 2002 | 18 | 66.95493096 | 3.061101679 |
| Rural Background | 2003 | 19 | 73.12097243 | 3.141220033 |
| Rural Background | 2004 | 19 | 71.90554171 | 2.697010939 |
| Rural Background | 2005 | 20 | 69.58880415 | 3.175932237 |
| Rural Background | 2006 | 21 | 73.86120991 | 3.185508689 |
| Rural Background | 2007 | 20 | 67.68682327 | 2.366239859 |
| Rural Background | 2008 | 20 | 69.824075 | 2.776703724 |
| Rural Background | 2009 | 22 | 67.63642721 | 2.662142188 |
| Rural Background | 2010 | 21 | 67.06291308 | 2.418050673 |
| Rural Background | 2011 | 22 | 67.96161796 | 2.26018005 |
| Rural Background | 2012 | 21 | 65.76109515 | 2.326102709 |
| Rural Background | 2013 | 21 | 68.98841077 | 2.201390628 |
| Rural Background | 2014 | 22 | 69.45663651 | 2.374208316 |
| Rural Background | 2015 | 22 | 71.13813047 | 1.880882468 |
| Rural Background | 2016 | 22 | 67.2424137 | 2.002794644 |
| Rural Background | 2017 | 20 | 69.16667566 | 2.244808449 |
| Rural Background | 2018 | 20 | 72.44044154 | 1.817804972 |
| Rural Background | 2019 | 19 | 71.61775258 | 2.206773699 |
| Rural Background | 2020 | 19 | 71.58003089 | 1.985694735 |
| Rural Background | 2021 | 18 | 70.59296826 | 1.546363826 |
| Rural Background | 2022 | 18 | 73.92458944 | 1.937533101 |
| Rural Background | 2023 | 20 | 73.18533501 | 1.868992836 |
| Urban Background | 1988 | 1 | NA | NA |
| Urban Background | 1989 | 1 | NA | NA |
| Urban Background | 1991 | 1 | NA | NA |
| Urban Background | 1992 | 4 | 39.92073153 | 12.5257199 |
| Urban Background | 1993 | 8 | 40.17707732 | 4.829714791 |
| Urban Background | 1994 | 13 | 47.42963988 | 3.260083886 |
| Urban Background | 1995 | 12 | 50.59969072 | 4.459544977 |
| Urban Background | 1996 | 18 | 45.92245964 | 2.793073475 |
| Urban Background | 1997 | 30 | 45.25629241 | 2.475751401 |
| Urban Background | 1998 | 42 | 48.45682457 | 2.321349119 |
| Urban Background | 1999 | 42 | 55.61305353 | 2.437577151 |
| Urban Background | 2000 | 41 | 52.18608936 | 2.420435619 |
| Urban Background | 2001 | 43 | 51.53686697 | 2.083010892 |
| Urban Background | 2002 | 45 | 52.65908147 | 2.282995545 |
| Urban Background | 2003 | 47 | 59.10313252 | 2.320678062 |
| Urban Background | 2004 | 50 | 56.54815639 | 2.392868156 |
| Urban Background | 2005 | 49 | 56.16364593 | 2.260301709 |
| Urban Background | 2006 | 48 | 60.72603455 | 2.445470962 |
| Urban Background | 2007 | 45 | 56.36195477 | 2.216519144 |
| Urban Background | 2008 | 43 | 58.92250747 | 2.653131653 |
| Urban Background | 2009 | 41 | 54.77306867 | 2.824474435 |
| Urban Background | 2010 | 42 | 51.94562047 | 2.450785606 |
| Urban Background | 2011 | 43 | 57.07709119 | 2.499086196 |
| Urban Background | 2012 | 42 | 55.05226443 | 1.891500184 |
| Urban Background | 2013 | 41 | 59.20267252 | 2.264195061 |
| Urban Background | 2014 | 42 | 59.93868088 | 2.347322533 |
| Urban Background | 2015 | 42 | 60.82366233 | 2.017577087 |
| Urban Background | 2016 | 41 | 55.91776665 | 2.081088477 |
| Urban Background | 2017 | 41 | 58.05640199 | 2.256589299 |
| Urban Background | 2018 | 42 | 62.77388335 | 2.001620902 |
| Urban Background | 2019 | 39 | 61.19443647 | 2.181379282 |
| Urban Background | 2020 | 39 | 64.41525643 | 1.812746134 |
| Urban Background | 2021 | 38 | 62.53374029 | 1.622969629 |
| Urban Background | 2022 | 40 | 65.01646011 | 1.647930626 |
| Urban Background | 2023 | 52 | 66.80087636 | 1.208359045 |