About our air quality data monitoring tools

We aim to build a Fairer Westminster by making air quality data openly available and transparent for everyone.

We are pleased to be able provide a set of online tools that allow you to view and analyse air quality data in Westminster from multiple sources.

Our tools include:

• Near real-time air quality monitors: View live air quality data on a map.
• Air quality in your area: Check the latest air quality data specific to your location.
• Trend analysis tool: Analyse air quality data from monitors across the city.
• Health and deprivation data: View asthma, COPD and deprivation displayed across our wards.
• Air quality diffusion tube map: View monthly air quality diffusion tube data on a map.

Find out what else we are doing to improve air quality in Westminster.

You can also use our Environmental Justice Measure tool which helps measure how people are differently impacted by their environment and climate change.

Before using our tools, please:

• Read the data guide: Understand data sources, capture frequency, and analysis methods.
• Data Responsibility: Note that not all data sources are managed by us, and we may not resolve data issues directly.
• Data Licensing: Some data is available for viewing only due to commercial licenses.
• Updates: We regularly update our data. Contact us if you need specific data not currently available.