Ashton Health Impact
Ashton averaged 8.2 ug/m3 PM2.5, equal to 1.6x the WHO annual PM2.5 guideline and about 0.4 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Canterbury, New Zealand.
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Average EPA AQI
38
Rank 3 of 7 cities by average AQI
PM2.5
8.2
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
Ashton
23
29
31
34
56
62
58
48
26
26
31
26
What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Ashton, the current global analytics build covers 357 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.