Statistical data set
Figure 19: Average number of days when levels of ozone, particulate matter, nitrogen dioxide and sulphur dioxide were 鈥楳oderate鈥� or higher at urban sites in the UK, 2010 to 2024
Updated 26 June 2025
| 锘縋辞濒濒耻迟补苍迟 | Year | Mean number of days per urban site with moderate or above pollution | Number of sites |
|---|---|---|---|
| Nitrogen Dioxide | 2010 | 4.960784314 | 51 |
| Nitrogen Dioxide | 2011 | 2.25 | 52 |
| Nitrogen Dioxide | 2012 | 2.037735849 | 53 |
| Nitrogen Dioxide | 2013 | 1.480769231 | 52 |
| Nitrogen Dioxide | 2014 | 1.3125 | 48 |
| Nitrogen Dioxide | 2015 | 1.02 | 50 |
| Nitrogen Dioxide | 2016 | 1.181818182 | 55 |
| Nitrogen Dioxide | 2017 | 0.540983607 | 61 |
| Nitrogen Dioxide | 2018 | 0.476190476 | 63 |
| Nitrogen Dioxide | 2019 | 0.094594595 | 74 |
| Nitrogen Dioxide | 2020 | 0 | 73 |
| Nitrogen Dioxide | 2021 | 0 | 69 |
| Nitrogen Dioxide | 2022 | 0.011627907 | 86 |
| Nitrogen Dioxide | 2023 | 0 | 89 |
| Nitrogen Dioxide | 2024 | 0 | 89 |
| Ozone | 2010 | 3.931034483 | 29 |
| Ozone | 2011 | 7.275862069 | 29 |
| Ozone | 2012 | 5.633333333 | 30 |
| Ozone | 2013 | 5.407407407 | 27 |
| Ozone | 2014 | 4.37037037 | 27 |
| Ozone | 2015 | 3.555555556 | 27 |
| Ozone | 2016 | 5.6 | 25 |
| Ozone | 2017 | 3.461538462 | 26 |
| Ozone | 2018 | 14.08 | 25 |
| Ozone | 2019 | 10.0625 | 32 |
| Ozone | 2020 | 17.34285714 | 35 |
| Ozone | 2021 | 5.787878788 | 33 |
| Ozone | 2022 | 14.05263158 | 38 |
| Ozone | 2023 | 14.29166667 | 48 |
| Ozone | 2024 | 9.245614035 | 57 |
| PM10 | 2010 | 5.595238095 | 42 |
| PM10 | 2011 | 13.68888889 | 45 |
| PM10 | 2012 | 7.921568627 | 51 |
| PM10 | 2013 | 6.395348837 | 43 |
| PM10 | 2014 | 5.977777778 | 45 |
| PM10 | 2015 | 4.62745098 | 51 |
| PM10 | 2016 | 3.574074074 | 54 |
| PM10 | 2017 | 3.583333333 | 60 |
| PM10 | 2018 | 2.362068966 | 58 |
| PM10 | 2019 | 5.928571429 | 70 |
| PM10 | 2020 | 1.597560976 | 82 |
| PM10 | 2021 | 1.569620253 | 79 |
| PM10 | 2022 | 3.576470588 | 85 |
| PM10 | 2023 | 1.263157895 | 95 |
| PM10 | 2024 | 0.878787879 | 99 |
| PM2.5 | 2010 | 9.372093023 | 43 |
| PM2.5 | 2011 | 19.65909091 | 44 |
| PM2.5 | 2012 | 13.1875 | 48 |
| PM2.5 | 2013 | 11.2173913 | 46 |
| PM2.5 | 2014 | 9.956521739 | 46 |
| PM2.5 | 2015 | 6.625 | 48 |
| PM2.5 | 2016 | 5.239130435 | 46 |
| PM2.5 | 2017 | 5.673913043 | 46 |
| PM2.5 | 2018 | 2.954545455 | 44 |
| PM2.5 | 2019 | 6.949152542 | 59 |
| PM2.5 | 2020 | 2.234375 | 64 |
| PM2.5 | 2021 | 1.183333333 | 60 |
| PM2.5 | 2022 | 2.984375 | 64 |
| PM2.5 | 2023 | 0.602564103 | 78 |
| PM2.5 | 2024 | 0.5 | 82 |
| Sulphur Dioxide | 2010 | 0.642857143 | 28 |
| Sulphur Dioxide | 2011 | 0.703703704 | 27 |
| Sulphur Dioxide | 2012 | 0.863636364 | 22 |
| Sulphur Dioxide | 2013 | 0.210526316 | 19 |
| Sulphur Dioxide | 2014 | 0.117647059 | 17 |
| Sulphur Dioxide | 2015 | 0.111111111 | 18 |
| Sulphur Dioxide | 2016 | 0.117647059 | 17 |
| Sulphur Dioxide | 2017 | 0 | 17 |
| Sulphur Dioxide | 2018 | 0 | 15 |
| Sulphur Dioxide | 2019 | 0.133333333 | 15 |
| Sulphur Dioxide | 2020 | 0.333333333 | 15 |
| Sulphur Dioxide | 2021 | 0 | 16 |
| Sulphur Dioxide | 2022 | 0.1 | 20 |
| Sulphur Dioxide | 2023 | 0.529411765 | 17 |
| Sulphur Dioxide | 2024 | 0.473684211 | 19 |