Air Quality Management Areas (AQMAs) are areas that are likely to exceed the national air quality objective for a specific pollutant.
AQMAs across Greater Manchester were originally declared in 2001-2002 for both annual mean NO2 and PM10 air quality objectives. These were amended between 2004-2006 and were no longer required for PM10.
10 AQMAs were subsequently declared between 2005-2006 for the whole of Greater Manchester based on the modelled 35μg/m3 isopleths for annual mean NO2, which, considering the legal limit is 40μg/m3, acknowledged the uncertainties of modelling and could be viewed as being cautious.
Recent modelling has shown an improvement in nitrogen oxides emissions and that the AQMA has reduced in size. A new single AQMA has been declared for Greater Manchester and was published on 1 May 2016.
This can be seen below. An interactive map can also be viewed at Department for Environment, Food and Rural Affairs (DEFRA)
The Greater Manchester Air Quality Action Plan sets out the measures which will reduce air pollution within Greater Manchester’s AQMAs, while supporting the region’s sustainable economic growth.