How we measure air quality
We regularly monitor air quality across Highland. Overall, air quality is good and continues to improve.
View our annual air quality progress reports
There are five automatic air quality monitors in Highland. These measure:
- nitrogen dioxide (NO₂)
- particulate matter (PM₁₀ and PM₂.₅)
- ozone (O₃)
We also use passive diffusion tubes to monitor nitrogen dioxide in some urban areas.
You can view live data on the Air Quality in Scotland website.
Over the past five years, all monitored locations in Highland have met the Scottish Government’s air quality objectives. Nitrogen dioxide levels in urban areas have steadily declined.