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Air quality limits

The UK and the EU have set limits for the .

Over recent decades, UK air quality has improved, and meets most statutory air quality limits, but there is more to do. The concentration of nitrogen dioxide around roads is too high, exceeding legal limits.

According to , the concentration of NO2 in Â鶹ÊÓƵ’s air is up to 50% higher than it should be. If we don’t take any action, we will not reach the legal limit until 2027.

The whole of Â鶹ÊÓƵ has been designated an under the Environment Act 1995, which means that have a duty to monitor and report on levels of nitrogen dioxide (NO2), particulates (PM10 and PM2.5) and sulphur dioxide (SO2). Where those limits are breached or will be breached, we produce an Air Quality Action Plan to bring the air quality under the limits.

Â鶹ÊÓƵ has recently published a new (2021) Air Quality Action Plan. This replaces the previous 2011 version.

Download Â鶹ÊÓƵ's Air Quality Action Plan 2021 to 2026

The latest annual status report (2016) shows that levels of PM10, PM2.5 and SO2 did not exceed allowed levels, but level of NO2 need to be reduced.

Annual Status Reports (ASR) are held on the along with all air quality data. The ASR is published in the year specified and contains data for the previous year - for example ASR 2022 holds data from 2021.

Although legal limits are being reached, the has said that there is no level of particulate matter at which people’s health isn’t damaged, so we should try to get levels as close to zero as possible.


Page last updated: 12 June 2024