The maps show forecasts of expected air quality over the next three days, to enable you to plan ahead.
Measurements of current air quality are available on LondonAir.
See the health advice to learn more about how the expected pollution levels might affect your health.
The maps are produced using CERC's world-leading ADMS-Urban air quality model.
* - If you text AIRTEXT to 78070 to sign up for text alerts, you will be charged for your sign-up message at your standard text rate and then you will receive free text alerts for Central London. Alternatively you can sign up online for free and choose to get alerts for your area by text, email or voicemail. You can also download our free smartphone app.