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

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.

Updating CBED modelling data & new Source Attribution Data

Updating CBED modelling data

We've updated the Search by Location and Site Relevant Critical Loads tools to use the latest pollutant deposition and concentration data. They are now based on a 3-year mean for 2012-2014. Remember that you can also view the changes in concentration/deposition since 2005 at each protected site.

New Source Attribution Data

We’ve updated the source attribution data in the Site Relevant Critical Loads tool. The total acid and nitrogen deposition at each site is apportioned between sources. We also now show the extent to which deposition is from local sources or distant sources. This information can help assess where to target measures to reduce deposition at sites.