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Index Banded Annual Totals for Swansea:
LOW
254 days
MODERATE
65 days
HIGH
4 days
VERY HIGH
1 day

Frequently asked questions

Air pollution is a complex and fascinating subject that, due to its highly scientific nature, can often be complicated and difficult to comprehend. The frequently asked questions (FAQs) listed here explain the basics and background of air pollution monitoring and discuss the most common air pollutants, their sources and their health effects. 

If your question is not answered by any of our FAQs please email us your question. We will endeavour to include your question within our FAQs page as soon as possible

Pollution glossary: