Cairns Seasonal Pollution
Cairns usually records its highest OpenAQ-derived EPA AQI in September and its cleanest month in January. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Queensland, Australia.
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Average EPA AQI
32
Rank 17 of 59 cities by average AQI
PM2.5
5.8
ug/m3 annualized city average
Seasonality
September
Cleanest: January
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Cairns
25
25
25
28
30
31
32
33
46
39
34
30
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Cairns, the current global analytics build covers 360 daily rows from 2023-12-31 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.