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United Kingdom Health Impact

Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator. This pilot covers 150 eligible cities with OpenAQ-derived daily AQI history.

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United Kingdom health-impact overview

Cigs / day avg
0.4
Berkeley Earth heuristic
Life-years lost / person
0.3
EPIC AQLI coefficient
Cities above WHO annual AQG
95%
annual mean > 5 ug/m3
Cities measured
150
of 171 OpenAQ cities

Same PM2.5. Three standards. Three verdicts.

PM2.5 5 ug/m3
US EPA AQI28
WHO tierAQG
Cigs/day0.2
AQLI0.0 y
PM2.5 10 ug/m3
US EPA AQI53
WHO tierAQG
Cigs/day0.5
AQLI0.5 y
PM2.5 15 ug/m3
US EPA AQI62
WHO tierAQG
Cigs/day0.7
AQLI1.0 y
PM2.5 25 ug/m3
US EPA AQI81
WHO tierIT-4
Cigs/day1.1
AQLI2.0 y

Top 20 cities by cigarette-equivalent exposure

Using Berkeley Earth's 22 ug/m3 = 1 cigarette/day heuristic. Cigarette equivalence is a communication tool, not a clinical diagnosis.

#CityPM2.5Cigs/dayLife-yrs lostAvg AQI
1DidcotOxfordshire17.8 ug/m30.81.3 y58
2MaidstoneKent15.1 ug/m30.71.0 y57
3Downham MarketNorfolk15.0 ug/m30.71.0 y56
4DoncasterDoncaster13.7 ug/m30.60.9 y53
5SpaldingLincolnshire13.3 ug/m30.60.8 y51
6Leighton BuzzardCentral Bedfordshire13.2 ug/m30.60.8 y51
7BrightonBrighton and Hove12.7 ug/m30.60.8 y52
8IslingtonIslington12.4 ug/m30.60.7 y50
9CoulsdonCroydon12.1 ug/m30.50.7 y48
10LondonEngland12.0 ug/m30.50.7 y54
11SwanageDorset12.0 ug/m30.50.7 y49
12WollastonDudley11.9 ug/m30.50.7 y48
13LiverpoolLiverpool11.9 ug/m30.50.7 y47
14East HamNewham11.8 ug/m30.50.7 y55
15AbingdonOxfordshire11.7 ug/m30.50.7 y47
16CoalvilleLeicestershire11.4 ug/m30.50.6 y45
17KingswoodSouth Gloucestershire11.3 ug/m30.50.6 y46
18ReddishStockport11.3 ug/m30.50.6 y47
19HighburyIslington11.2 ug/m30.50.6 y46
20EarleyWokingham11.2 ug/m30.50.6 y47

Methodology & sources

This page starts with OpenAQ PM2.5 and PM10 measurements mapped to AQI Now cities, then rolls daily city observations into city-level PM2.5 averages and US EPA AQI summaries. Health equivalents are screening indicators: useful for comparing exposure, not a clinical diagnosis.

Cigarette equivalence
22 ug/m3 = 1 cig/day

Muller & Muller, Berkeley Earth (2015), derived from Pope et al. 2002 and cigarette risk factors.

Life-years lost
0.098 y per ug/m3

EPIC Air Quality Life Index coefficient above the WHO annual PM2.5 baseline of 5 ug/m3.

WHO 2021 PM2.5
15 ug/m3 24-hr AQG

WHO tiers shown here use AQG 15, IT-4 25, IT-3 37.5, IT-2 50, IT-1 75 ug/m3.

Methodology

The extractor maps OpenAQ monitoring locations to the nearest AQI Now city in the same country, aggregates PM2.5 and PM10 to daily city averages, and converts those concentrations to US EPA AQI. Country tool pages use only city summaries that satisfy the configured minimum daily coverage threshold.

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