Timaru Seasonal Pollution
Timaru usually records its highest OpenAQ-derived EPA AQI in June and its cleanest month in January. The page uses OpenAQ-derived daily history for 4 mapped monitoring locations in Canterbury, New Zealand.
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Average EPA AQI
41
Rank 2 of 7 cities by average AQI
PM2.5
8.6
ug/m3 annualized city average
Seasonality
June
Cleanest: January
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Timaru
27
30
33
41
52
62
59
52
35
31
38
29
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Timaru, the current global analytics build covers 362 daily rows from 2024-01-01 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.