UK: ozone pollution days by site 2010-2021

There were 10.9 days of moderate or higher ozone pollution in rural sites in the UK in 2021. In comparison there were 5.4 in urban sites. Rural sites typically have a higher number of moderate to higher air pollution days caused by ozone.

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 2021

Characteristic	Rural sites	Urban sites
2021	10.9	5.4
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 2022

More information

Region

United Kingdom

Survey time period

2010 to 2021

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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