Air quality data is available from 1 January 2016. Individual stations have been monitoring for different time periods so data may not be available for all possible times.Deagon station began monitoring air quality on 13 July 2021.
Aerosols and fine particles can reduce visibility. Smoke from fires or haze are common causes of poor visibility.
The guideline for Visibility is 235Mm⁻¹ (1hr avg).
Visibility is measured in inverse megametres.