What is the air quality in Cairns?

Cairns, Australia has an annual US AQI of 30 (Excellent) and average PM2.5 of 5.3 µg/m³, ranking #45 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Cairns?

April is typically the cleanest month (AQI 26) and October the most polluted (AQI 36).

Where does Cairns's air quality data come from?

PM2.5: 1998–2026 (monitors 2023–2026, satellite 1998–2023; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Cairns, Australia — Air Quality & Clean City Guide 2026

Cairns Air Quality Data

Global rank	City	Continent	AQI	PM2.5
45	Cairns, Australia	Oceania	AQI 30	PM2.5 5.3 µg/m³