Air Quality Information / Alert Bulletin, 27th May 2026

News published: 27/05/2026

Dry and sunny weather along with light winds have resulted in increased levels of pollution in some UK locations. Pollution alert thresholds have been exceeded at the following locations:

UK ozone public information threshold of 180 µgm-3:

• Honiton, 27/05/2026 23:00 BST, 184 ugm-3
• Honiton, 27/05/2026 22:00 BST, 184 ugm-3
• Yarner Wood, 27/05/2026 21:00 BST, 195 ugm-3
• Exeter Roadside, 27/05/2026 21:00 BST, 191 ugm-3
• Honiton, 27/05/2026 21:00 BST, 182 ugm-3
• Yarner Wood, 27/05/2026 20:00 BST, 207 ugm-3
• Exeter Roadside, 27/05/2026 20:00 BST, 200 ugm-3
• Honiton, 27/05/2026 20:00 BST, 185 ugm-3
• Exeter Roadside, 27/05/2026 19:00 BST, 201 ugm-3
• Honiton, 27/05/2026 19:00 BST, 182 ugm-3
• Yarner Wood, 27/05/2026 19:00 BST, 206 ugm-3
• Bournemouth, 27/05/2026 18:00 BST, 182 ugm-3
• Yarner Wood, 27/05/2026 18:00 BST, 187 ugm-3
• Bournemouth, 27/05/2026 17:00 BST, 185 ugm-3
• Exeter Roadside, 27/05/2026 17:00 BST, 181 ugm-3
• Swindon Walcot, 27/05/2026 16:00 BST, 182 ugm-3

For more information, air quality forecasts, latest measurements and health advice are available on UK-AIR. Updates on current and forecast levels of air pollution can also be found on X (@DefraUKAir). The UK Health Security Agency advises that some people are more sensitive to pollution than others and may begin to notice an effect on their breathing. People with asthma are not necessarily more sensitive but, if affected, can use their reliever inhaler to alleviate symptoms. If affected, people are urged to take sensible precautions. In particular, avoiding exercise outdoors in the afternoon can reduce individual exposure to ozone.

Further information about health impacts can be found on the UK Air website. https://uk-air.defra.gov.uk/air-pollution/daqi

If the pollution information or alert thresholds are again breached, further alerts will be issued on our UK Air website http://uk-air.defra.gov.uk/.

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