Welcome to the UK Air Pollution Information System (APIS). Air pollution is one of the major environmental issues in the UK, with impacts occurring at local, regional and global scales. Much is known about the impacts on natural heritage features, with major steps already being taken in the development of abatement strategies both at national and international levels. It is clear, however, that there are still major gaps in the scientific understanding. This site provides a searchable database and information on pollutants and their impacts on habitats and species.

Air Pollution Information System

Latest news

Background data reverted to years 2013-2015!

Important Information

In March 2018 we updated the Search by Location and Site Relevant Critical Loads tools in APIS to use background pollution maps based on a 3-year average for 2014-2016. An error has been discovered with the underlying gas and particulate matter monitoring data upon which the background maps are based. This affects the results for only the year 2016. It is probable that the 3-year average will be affected only slightly, however, the 2016 mapping is currently being re-run to quantify changes. As a precautionary measure for the meantime, we have reverted back to the 2013-2015 datasets in APIS and will re-issue the 2014-2016 maps as soon as they are available. The source attribution data in the Site Relevant Critical Loads tool has not been changed and continues to be based on 2012 emissions data.

Code of Good Agricultural Practice for reducing ammonia emissions

DEFRA report front pageDefra have recently published a code of good agricultural practicefor reducing ammonia emissions’ (COGAP) for England. It is a voluntary guidance code that is relevant to many farming practices and has been written specifically for English farming systems. There is also an accompanying video on YouTube here.”

JNCC Report: A decision framework to attribute atmospheric nitrogen deposition as a threat to or cause of unfavourable habitat condition on protected sites

JNCC has published a report describing the development of a decision framework to provide a means of attributing nitrogen deposition as a threat to, or cause of, unfavourable habitat condition on protected sites.  

Nitrogen Thematic Action Plan

The LIFE Natura 2000 Programme in Wales has recently published a Nitrogen Thematic Action Plan, which details priority strategic actions to address nitrogen deposition impacts on Natura 2000 features across the network. It is one of a series of 11 Thematic Action Plans.  

Additionally, Natural Resources Wales have published a report to support the recommendations in the Thematic Action Plan “Assessing and Addressing Atmospheric Nitrogen Impacts on Sites” which examines the sources contributing to nitrogen deposition at Welsh Natura sites. Under the LIFE Improvement Programme for England’s Natura 2000 Sites (IPENS) Natural England have also published a series of Theme Plans, including one for nitrogen deposition. These are strategic plans explaining how they intend to deal with priority issues affecting multiple Natura 2000 sites.