Kairaki Seasonal Pollution
Kairaki usually records its highest OpenAQ-derived EPA AQI in July and its cleanest month in January. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Canterbury, New Zealand.
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Average EPA AQI
42
Rank 1 of 7 cities by average AQI
PM2.5
9.9
ug/m3 annualized city average
Seasonality
July
Cleanest: January
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Kairaki
24
24
30
36
69
68
69
58
36
28
32
27
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Kairaki, the current global analytics build covers 360 daily rows from 2024-01-03 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.