What is the air quality trend in Cairns?

Over the past 15 days, Cairns had an average AQI of 48 based on station measurements. The worst day was 2026-05-18 with AQI 66.

How is Cairns air quality measured?

Air quality in Cairns is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Cairns, Australia

Name: Cairns Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Cairns, Australia.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

184h

PM2.5 Station

184h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	47	11–82	13.5 µg/m³	7h	2
2026-05-28	54	16–151	15.8 µg/m³	13h	2
2026-05-27	29	11–42	6.9 µg/m³	14h	1
2026-05-26	40	11–68	10.3 µg/m³	7h	2
2026-05-25	57	10–117	16.9 µg/m³	14h	1
2026-05-24	54	5–89	15.7 µg/m³	13h	1
2026-05-23	44	22–71	11.3 µg/m³	14h	2
2026-05-22	45	10–94	12.3 µg/m³	11h	1
2026-05-21	38	20–57	9.2 µg/m³	15h	1
2026-05-20	35	6–74	9.1 µg/m³	16h	2
2026-05-19	61	9–91	18.3 µg/m³	16h	2
2026-05-18	66	20–105	20.7 µg/m³	15h	1
2026-05-17	56	2–107	17.0 µg/m³	15h	1
2026-05-16	40	9–74	10.5 µg/m³	11h	1
2026-05-15	57	46–68	15.4 µg/m³	3h	1

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