Balham Health Impact
Balham 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 4 mapped monitoring locations in Wandsworth, United Kingdom.
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Average EPA AQI
24
Rank 140 of 171 cities by average AQI
PM2.5
8.2
ug/m3 annualized city average
Seasonality
June
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Balham
19
14
17
13
26
43
36
21
20
18
24
32
What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Balham, the current global analytics build covers 341 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.