Hornchurch Health Impact
Hornchurch averaged 5.6 ug/m3 PM2.5, equal to 1.1x the WHO annual PM2.5 guideline and about 0.3 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Havering, United Kingdom.
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Average EPA AQI
28
Rank 133 of 171 cities by average AQI
PM2.5
5.6
ug/m3 annualized city average
Seasonality
May
Cleanest: October
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Hornchurch
33
26
31
21
35
29
21
28
31
19
34
19
What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Hornchurch, the current global analytics build covers 334 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.