Chart air quality data
Visibility at Rocklea, Friday 22 November 2019 about Visibility
None of the data is validated (0% validated, 0/24 records)
Legend to air quality index colours about index values
- Very good 0–33
- Good 34–66
- Fair 67–99
- Poor 100–149
- Very poor >150
None of the data is validated (0% validated, 0/48 records)
About air quality index values
Our scientists create an air quality index by converting measured pollutant concentrations into index values which make it easier to interpret air quality data by reducing the complexity associated with pollutant concentrations.
The index value is the pollutant concentration expressed as a proportion of the National Environment Protection Measure for Ambient Air Quality (Air NEPM) standard or the Environmental Protection (Air) Policy 2008 (Air EPP) objective.
About Visibility
Aerosols and fine particles can reduce visibility. Smoke from fires or haze are common causes of poor visibility.
The standard/guideline for Visibility is 235Mm⁻¹ (1hr avg).