Statistical data set
Figure 20: Average number of days when levels of ozone, particulate matter, and sulphur dioxide were ‘Moderate’ or higher at rural sites in the UK, 2010 to 2024
Updated 26 June 2025
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| Pollutant | Year | Mean number of days per rural site with moderate or above pollution | Number of sites |
|---|---|---|---|
| Ozone | 2010 | 10.47368421 | 19 |
| Ozone | 2011 | 16.52631579 | 19 |
| Ozone | 2012 | 12.44444444 | 18 |
| Ozone | 2013 | 16.52631579 | 19 |
| Ozone | 2014 | 8.65 | 20 |
| Ozone | 2015 | 11.26315789 | 19 |
| Ozone | 2016 | 11.15 | 20 |
| Ozone | 2017 | 8.894736842 | 19 |
| Ozone | 2018 | 28.27777778 | 18 |
| Ozone | 2019 | 21.625 | 16 |
| Ozone | 2020 | 22.05882353 | 17 |
| Ozone | 2021 | 11.58823529 | 17 |
| Ozone | 2022 | 21.35294118 | 17 |
| Ozone | 2023 | 18.73684211 | 19 |
| Ozone | 2024 | 11.1 | 20 |
| PM10 | 2010 | 1 | 3 |
| PM10 | 2011 | 4.5 | 2 |
| PM10 | 2012 | 2 | 5 |
| PM10 | 2013 | 2 | 4 |
| PM10 | 2014 | 2.2 | 5 |
| PM10 | 2015 | 0.8 | 5 |
| PM10 | 2016 | 1 | 5 |
| PM10 | 2017 | 0.8 | 5 |
| PM10 | 2018 | 1 | 5 |
| PM10 | 2019 | 2.4 | 5 |
| PM10 | 2020 | 1.6 | 5 |
| PM10 | 2021 | 1 | 5 |
| PM10 | 2022 | 1.5 | 6 |
| PM10 | 2023 | 0.416666667 | 12 |
| PM10 | 2024 | 0.2 | 15 |
| PM2.5 | 2010 | 2.5 | 2 |
| PM2.5 | 2011 | 10.33333333 | 3 |
| PM2.5 | 2012 | 7.666666667 | 3 |
| PM2.5 | 2013 | 6.666666667 | 3 |
| PM2.5 | 2014 | 9 | 3 |
| PM2.5 | 2015 | 3 | 3 |
| PM2.5 | 2016 | 3.333333333 | 3 |
| PM2.5 | 2017 | 4.666666667 | 3 |
| PM2.5 | 2018 | 2.333333333 | 3 |
| PM2.5 | 2019 | 4.8 | 5 |
| PM2.5 | 2020 | 1.8 | 5 |
| PM2.5 | 2021 | 1.6 | 5 |
| PM2.5 | 2022 | 1.333333333 | 6 |
| PM2.5 | 2023 | 0.75 | 12 |
| PM2.5 | 2024 | 0.2 | 15 |
| Sulphur Dioxide | 2010 | 0 | 5 |
| Sulphur Dioxide | 2011 | 0.166666667 | 6 |
| Sulphur Dioxide | 2012 | 0.166666667 | 6 |
| Sulphur Dioxide | 2013 | 0 | 5 |
| Sulphur Dioxide | 2014 | 0 | 4 |
| Sulphur Dioxide | 2015 | 0 | 3 |
| Sulphur Dioxide | 2016 | 0 | 3 |
| Sulphur Dioxide | 2017 | 0 | 6 |
| Sulphur Dioxide | 2018 | 0 | 6 |
| Sulphur Dioxide | 2019 | 0 | 5 |
| Sulphur Dioxide | 2020 | 0 | 4 |
| Sulphur Dioxide | 2021 | 0 | 5 |
| Sulphur Dioxide | 2022 | 0 | 4 |
| Sulphur Dioxide | 2023 | 0 | 6 |
| Sulphur Dioxide | 2024 | 0 | 5 |