UK: ozone pollution days by site 2010-2022

Ozone caused on average 21.3 moderate or higher pollution days at rural sites in the UK in 2022, and 14 days at urban locations. Rural locations typically have a higher number of days of ozone pollution days than urban locations. Ozone was the main cause of moderate and higher pollution days at rural and urban sites in the UK during 2022.

Average number of moderate or higher air pollution days caused by ozone in rural and urban sites in the United Kingdom (UK) from 2010 to 2022

Characteristic	Rural sites	Urban sites
2022	21.3	13.7
2021	10.9	5.5
2020	21.5	17.1
2019	20.8	9.5
2018	27.7	13.7
2017	8.6	3.3
2016	11.1	5.5
2015	10.7	3.7
2014	8.1	4.4
2013	15.7	5
2012	12.4	5.6
2011	16.1	7.3
2010	10.5	3.9

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Release date

April 2023

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Region

United Kingdom

Survey time period

2010 to 2022

Supplementary notes

Not every site in the automatic monitoring network is included. Sites must also meet certain data capture targets to be used in the index. For the required pollutants data capture should be more than or equal to 75% of the year. For ozone this applies to both the full year and the summer period in isolation.

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