Table 4.

Advice on measures to take according to air pollution levels (adapted from British Lung Foundation website (https://www.blf.org.uk/support-for-you/air-pollution/what-can-i-do))

Pollution level	Measures
Low	Avoid spending long periods of time along busy roads
Moderate	Reduce or avoid strenuous outdoor activities
High	Reduce or avoid strenuous outdoor activities Avoid pollution hotspots Avoid rush hours, travel earlier before pollution levels build up Use less polluted routes when cycling, walking or running Use of reliever inhaler if pollution is a trigger to asthma symptoms Seek medical attention