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<p>Defra uses both monitoring and modelling to assess air quality in the UK. Currently,
148 monitoring stations in the Automatic Urban Rural Network report near-real-time
data on five key pollutants: particulate matter (PM<sub>10</sub> and PM<sub>2.5</sub>),
sulphur dioxide (SO<sub>2</sub>), ozone (O<sub>3</sub>) and nitrogen dioxide (NO<sub>2</sub>).
Information about these sites and modelled data is available on Defra’s UK-Air website.</p><p>
</p><p>For the purposes of EU compliance reporting, the UK is divided into 43 zones.
The relevant zone for each area is shown in the table below. Details for compliance
in each year since 2011 can be found at: <a href="https://uk-air.defra.gov.uk/library/annualreport/index"
target="_blank">https://uk-air.defra.gov.uk/library/annualreport/index</a>. Compliance
reports for last year will be published in October.</p><p> </p><p>The Government’s
ambition is for the UK to have the best natural environment anywhere. Clean air is
an essential part of that ambition. In December last year, the Government published
the national air quality plan for reducing nitrogen dioxide (NO<sub>2</sub>) concentrations
through a new programme of Clean Air Zones in five cities in England, including Leeds,
Nottingham and Southampton, as well as Birmingham and Derby, along with the Ultra-Low
Emission Zone in London. The plan combines targeted local and national measures and
continued investment in clean technologies. These measures will also reduce PM concentrations.</p><p>
</p><p>All 10 areas exceeded the annual mean limit value for NO<sub>2</sub> in a number
of years since 2011, and some areas also exceeded the hourly limit value. The latest
available data for the 10 areas is shown in the table below.</p><p> </p><p> </p><p>
</p><p> </p><p> </p><p> </p><p> </p><table><tbody><tr><td><p><strong>Location</strong></p></td><td><p><strong>Zone
</strong></p></td><td><p><strong>Year NO</strong><strong><sub>2</sub></strong><strong>
hourly limit value exceeded</strong></p></td><td><p><strong>Year NO</strong><strong><sub>2</sub></strong><strong>
annual mean value exceeded</strong></p></td></tr><tr><td><p><strong>Port Talbot</strong></p></td><td><p>Swansea
Urban Area</p></td><td><p> </p></td><td><p>2011, 2012, 2013, 2014 (2011 – 2014, modelled
roadside exceedances in Port Talbot)</p></td></tr><tr><td><p><strong>Port Talbot</strong></p></td><td><p>South
Wales</p></td><td><p>2014,2015,2016</p></td><td><p>2011, 2012, 2013, 2014, 2015</p></td></tr><tr><td><p><strong>Stanford-le-Hope</strong></p></td><td><p>Eastern</p></td><td><p>2016
(Luton)</p></td><td><p>2011, 2012, 2013, 2014</p></td></tr><tr><td><p><strong>Glasgow</strong></p></td><td><p>Glasgow
Urban Area</p></td><td><p>2011</p></td><td><p>2011, 2012, 2013, 2014, 2015</p></td></tr><tr><td><p><strong>London</strong></p></td><td><p>Greater
London Urban Area</p></td><td><p>2011,2012,2013,2014,2015,2016</p></td><td><p>2011,
2012, 2013, 2014, 2015</p></td></tr><tr><td><p><strong>Scunthorpe</strong></p></td><td><p>Yorkshire
& Humberside</p></td><td><p> </p></td><td><p>2011, 2012, 2013, 2014 (2011 background
exceedance in Scunthorpe)</p></td></tr><tr><td><p><strong>Leeds</strong></p></td><td><p>West
Yorkshire Urban Area</p></td><td><p> </p></td><td><p>2011, 2012, 2013, 2014 (2011
– 2014, modelled roadside exceedances in Leeds)</p></td></tr><tr><td><p><strong>Eastbourne</strong></p></td><td><p>South
East</p></td><td><p>2011,2012</p></td><td><p>2011, 2012, 2013, 2014, 2015</p></td></tr><tr><td><p><strong>Nottingham</strong></p></td><td><p>Nottingham
Urban Area</p></td><td><p> </p></td><td><p>2011, 2012, 2013, 2014</p></td></tr><tr><td><p><strong>Southampton</strong></p></td><td><p>Southampton
Urban Area</p></td><td><p> </p></td><td><p>2011, 2012, 2013, 2014</p></td></tr><tr><td><p><strong>Oxford
</strong></p></td><td><p>South East</p></td><td><p>2011,2012</p></td><td><p>2011,
2012, 2013, 2014, 2015 (2011 – 2014, modelled roadside exceedances in Oxford)</p></td></tr></tbody></table><p>
</p><p> </p><p>Latest compliance data shows that the UK is meeting the EU daily and
annual mean limits for PM concentrations. There were exceedances of the daily mean
limit value for PM<sub>10</sub> in 2011 and 2012 in London.</p><p> </p><p>There were
exceedances in the annual mean limit value for Benzo [a] Pyrene (B[a]P) in all years
between 2011 and 2014 in Port Talbot and 2011 to 2015 in Scunthorpe. There are action
plans in place for B[a]P in all affected areas. Details can be found at: <a href="https://uk-air.defra.gov.uk/library/bap-nickel-measures"
target="_blank">https://uk-air.defra.gov.uk/library/bap-nickel-measures</a>.</p>
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