Cairns Air Quality Index (AQI) and Air Pollution
The Cairns Air Quality Index (AQI) today is 39 (Good). The dominant pollutant is O3. Other measured pollutants include NO₂ (0.1 ppb), SO₂ (0 ppb), CO (0.1 ppm), O₃ (0.042 ppm), PM10 (7.3µg/m³), PM2.5 (4 µg/m³), contributing to air pollution.
Live AQI
Air Quality is
Main Pollutant: O3
Last updated: just now

Major Pollutants Cairns
4 µg/m³
7.3 µg/m³
0.042 ppm
0.1 ppm
0.1 ppb
0 ppb
In Cairns, the main air pollutant is O3. It mostly comes from Ozone forms when sunlight reacts with gases from vehicles and industries. It can irritate the lungs and throat and make it difficult to breathe especially for people with asthma. To stay safe, Try to avoid outdoor exercise during afternoon hours when ozone levels are usually high.
Cairns air quality
Cairns is a tropical city famous as the gateway to the Great Barrier Reef and Daintree Rainforest. Summers are hot, humid, and rainy while winters are dry and mild. Residents and tourists enjoy snorkeling, diving, rainforest tours, and outdoor markets. The city has a vibrant multicultural community with cafes, shops, and festivals. Tropical landscapes and coastal attractions define the lifestyle.
Air quality is usually excellent with minor temporary effects from vehicle traffic or seasonal fires. Sea breezes and rainforest proximity help disperse pollutants efficiently.