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Index Banded Annual Totals for Swansea:
99 days
10 days
1 day
4 days

Frequently asked questions

Why the need for air quality monitoring?

Air pollution levels have been monitored in the UK for over 100 years, however, it has really only been in the last 25 years that the technology has been available to measure air pollution on a real-time basis. There are several reasons why it so important to measure air pollution:

There are many ways of calculating the levels of air quality in an area - this can be done by estimating the rates of emissions from sources such as cars, housing estates and factories etc. However, in order to verify these calculations and get up-to-the-minute information on air quality, it is essential to measure air quality with sophisticated instrumentation such as that designed and supplied by the companies that appear in our links section.

Pollution glossary: