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

Source Attribution Survey


The APIS programme are undertaking some development work and new modelling for attributing pollutant sources across the UK and protected network. Source Attribution data provides a snapshot of the mix of pollutant deposition by source sector emissions over a 5km grid or protected site in the UK. As part of this new work we would like to hear your views on the current source attribution data and how it is used in APIS. The survey https://ceh-online-surveys.onlinesurveys.ac.uk/source-attribution-survey-apis will take you around 10 minutes to complete. Your answers are important for the APIS steering group to more fully utilise source attribution data across the UK and protected site network.

APIS maintenance 17th August

APIS database is going to be temporarily down for maintenance on 17th of August from 17:30 to 20:30. This will affect the functionality of some parts of the website e.g. the SRCL tool and the Seach by Location will be unavailable.

New FAQ page!

APIS now has a FAQ page. Over the years we have received many questions and queries about the data and the science on APIS . We have put these together to form a most frequently asked questions tool. The questions are tagged with two levels of keywords so users can find the questions easily through a 'quick-click' menu system. User can also use the 'Search' box to type in any keyword - only the questions with the keyword will appear.  You can let us know what you think of it via the Contact page.