Guide to air pollution, health and actions

We try to answer common questions about air pollution in London, and explain how our website can keep you informed.

Big Questions

These are the questions we are often asked:

• Is air pollution worse in London?
• Should I worry about air pollution?
• What is air pollution?
• What can I do to avoid pollution?
• Can anything be done about this?

Hot topics

The current popular topics are:

• What is nitrogen dioxide?
• What is ozone?
• Are busy roads dangerous?
• What is the worst place in London?
• What are particles?

Videos

View all of our Guide videos