Air Pollution for
your Postcode

Our air quality model, MappAir® provides historic, near real-time, and forecast data for air pollution. Taking a variety of data sources such as weather, traffic data and government reference site data, it creates a pollution map for the whole globe right down to a busy junction.

MappAir® has been used to power the pollution postcode checker on the BBC website and provides a strong indication of ambient air quality from annual averaged data for wide areas or postcodes across the UK.

South Kensington London Mews

The postcode checker is based on a dataset of air quality at a 100m x 100m resolution and therefore can’t be used as a site-specific measurement. For this, real-time localised monitoring is required through Zephyr® air quality monitors. Zephyr’s provide detailed insight into pollution for specific areas, taking in and measuring concentrations of gaseous and particle pollutants. 


Global pollution map 


Small-form, indicative air quality monitor

What does my Pollution Score Mean?


The air in your area is generally clean and well below the legal levels for pollutants such as NO2.


The air in your area is generally cleaner than the regulatory limits and should not cause health concerns except in exceptional weather conditions.


The annual average concentrations of pollutants in this area are likely to be marginally above the regulatory guidelines. In stagnant weather conditions, peak traffic flows may cause higher levels which merit some caution.

Health studies suggest a marginal health impact for most individuals in these conditions. Please check Public Health England for up-to-date information.


There are likely to be regular episodes of moderate pollution in these areas, with annual average concentrations above regulatory guidelines. Sensitised individuals (e.g., Asthma sufferers) should manage exposure and exercise levels accordingly and there are likely to be some health impacts of long-term exposure.

All of us will have some exposure to air pollution some of the time, as we share our air. This category highlights trends in pollution over time, (i.e., traffic jams) helping vulnerable people to plan around these areas.


Pollution concentrations in this area are likely to frequently exceed World Health Organisation (WHO) guidelines and regulatory limits. Annual average concentrations are highly likely to be above 40 uµ/m3 of NO2 with associated health impacts. Residents should monitor air quality forecasts and manage exposure appropriately. Always check with your GP if in doubt and stay informed.

Skyscraper Horizontal

How can we Improve Air Quality?

Tips for Individuals to Reduce Exposure 

There are lifestyle and behavioural changes we can all adapt to improve the quality of the air we breathe. Here's some handy tips to help you minimise pollution and exposure.

How we Work with Businesses to Improve Air Quality

We work with local government and businesses across various sectors to help understand and mitigate the impacts of air pollution on the environment & human health.