What is the Gera Air Health Index for Richmond upon Thames?

Richmond upon Thames scores 3.9/10 on the Gera Air Health Index as of 2024 (rank 270 of 296 English local authorities). That is 2.0 points below the national average of 5.9/10.

What is the annual mean PM2.5 concentration in Richmond upon Thames?

The population-weighted annual mean PM2.5 concentration in Richmond upon Thames is 8.33 µg/m3 (DEFRA Pollution Climate Mapping model, 2024). This is above the WHO 2021 annual guideline of 5 µg/m3 and below the UK 2028 interim target of 10 µg/m3.

What fraction of deaths in Richmond upon Thames are attributable to air pollution?

According to UKHSA Fingertips (indicator 93861, 2024), an estimated 6.2% of mortality in Richmond upon Thames is attributable to particulate air pollution. This figure, produced by OHID from DEFRA modelled data, forms the health-context component of the Gera Air Health Index.

How is the Gera Air Health Index calculated for Richmond upon Thames?

GAH = 0.6 × PM2.5_score + 0.4 × health_context_score. PM2.5_score is min-max normalised across all 296 LAs (4.20 µg/m3 = 10/10, 10.96 µg/m3 = 0/10); health_context_score is min-max normalised from UKHSA Fingertips mortality fractions (3.2% = 10/10, 8.1% = 0/10). Full methodology at /methodology/gera-air-health-index.

Is the air quality in Richmond upon Thames getting better or worse?

The 2024 figures reflect the most recent DEFRA PCM modelled annual mean. UK PM2.5 concentrations have fallen substantially since 2010 due to emission reductions, but remain above the WHO 2021 annual guideline of 5 µg/m3 in most English local authorities. Richmond upon Thames (8.33 µg/m3) is working towards the WHO guideline. Gera updates GAH annually when DEFRA publishes new PCM data.

Air quality in Richmond upon Thames

London · ONS code E09000027

What is the air quality and health risk from air pollution in Richmond upon Thames?

Richmond upon Thames has a Gera Air Health Index of 3.9/10 (rank 270 of 296 English local authorities), based on a population-weighted annual mean PM2.5 concentration of 8.33 µg/m3 in 2024 — below the UK 2028 interim target, with 6.2% of local mortality attributable to particulate air pollution (UKHSA Fingertips 2024). DEFRA PCM / UKHSA Fingertips data, OGL v3.0.

Proprietary metric:Gera Air Health Index·As of 2024 · updated annual (last: 2026-06-20)

3.9/ 10

Gera Air Health Index — Richmond upon Thames

Rank 270 of 296 English local authorities · 2.0 points below the national average of 5.9/10

Below UK 2028 target

Air quality data — Richmond upon Thames

Gera Air Health Index data for Richmond upon Thames
Metric	Value	Source
Gera Air Health Index (GAH/10)	3.9/10	GeraRent (computed)
Annual mean PM2.5 (µg/m3)	8.33	DEFRA PCM 2024
PM2.5 sub-score (0–10)	3.9	GeraRent (normalised)
Mortality attributable to particulate air pollution (%)	6.21%	UKHSA Fingertips 93861, 2024
Health context sub-score (0–10)	3.8	GeraRent (normalised)
WHO 2021 guideline met?	No (8.33 > 5)	WHO Air Quality Guidelines 2021
UK 2028 interim target met?	Yes (8.33 ≤ 10)	Environment Act 2021

Population-weighted annual mean PM2.5 (2024) from DEFRA Pollution Climate Mapping (PCM) model. Every figure is real official government data — only the composite GAH score is Gera's. Full methodology.

Personal air quality risk estimator

See how Richmond upon Thames's PM2.5 level compares to WHO and UK targets for your health profile. Adjust the sliders to explore other scenarios.

Adjust the inputs below to see how different PM2.5 levels and health profiles affect your personal air quality risk assessment. Based on DEFRA PCM data and WHO risk thresholds.

PM2.5 annual mean (µg/m3)Richmond upon Thames: 8.33

4 µg/m3 (cleanest)8.3 µg/m315 µg/m3 (most polluted)

Health profile

Years of exposure

1 year5 years30 years

Moderate risk· PM2.5 8.3 µg/m3

Below UK 2028 interim target but above WHO guideline. Long-term exposure raises cardiovascular and respiratory risk.

Air quality comparison against thresholds
Benchmark	Level (µg/m3)	Your area vs
WHO 2021 annual guideline	5.0	67% above
UK 2028 interim target	10.0	17% below ✓
England average (approx)	8.1	3% higher

Estimated excess cumulative PM2.5 exposure above WHO guideline

16.7 µg/m3·years

Over 5 years at 8.3 µg/m3, adjusted for your health profile (×1.0 sensitivity factor). This is an illustrative estimate, not a clinical assessment.

PM2.5 values from DEFRA Pollution Climate Mapping (PCM) 2024, population-weighted. Risk thresholds: WHO Air Quality Guidelines 2021. Health-profile sensitivity factors are illustrative multipliers based on published vulnerability evidence (WHO, COMEAP), not personalised clinical advice. Consult a healthcare professional for personal health guidance.

Richmond upon Thames air quality — questions and answers

What is the Gera Air Health Index for Richmond upon Thames?: Richmond upon Thames scores 3.9/10 on the Gera Air Health Index as of 2024 (rank 270 of 296 English local authorities). That is 2.0 points below the national average of 5.9/10.
What is the annual mean PM2.5 concentration in Richmond upon Thames?: The population-weighted annual mean PM2.5 concentration in Richmond upon Thames is 8.33 µg/m3 (DEFRA Pollution Climate Mapping model, 2024). This is above the WHO 2021 annual guideline of 5 µg/m3 and below the UK 2028 interim target of 10 µg/m3.
What fraction of deaths in Richmond upon Thames are attributable to air pollution?: According to UKHSA Fingertips (indicator 93861, 2024), an estimated 6.2% of mortality in Richmond upon Thames is attributable to particulate air pollution. This figure, produced by OHID from DEFRA modelled data, forms the health-context component of the Gera Air Health Index.
How is the Gera Air Health Index calculated for Richmond upon Thames?: GAH = 0.6 × PM2.5_score + 0.4 × health_context_score. PM2.5_score is min-max normalised across all 296 LAs (4.20 µg/m3 = 10/10, 10.96 µg/m3 = 0/10); health_context_score is min-max normalised from UKHSA Fingertips mortality fractions (3.2% = 10/10, 8.1% = 0/10). Full methodology at /methodology/gera-air-health-index.
Where does the air quality data for Richmond upon Thames come from?: PM2.5 data: DEFRA Pollution Climate Mapping (PCM) model, population-weighted annual mean for 2024, published at uk-air.defra.gov.uk. Health context: UKHSA Fingertips indicator 93861 (fraction of mortality attributable to particulate air pollution), 2024. Both datasets are Open Government Licence v3.0 and reusable with attribution. The Gera Air Health Index is computed by GeraRent from these figures; the inputs are official government data.
Is the air quality in Richmond upon Thames getting better or worse?: The 2024 figures reflect the most recent DEFRA PCM modelled annual mean. UK PM2.5 concentrations have fallen substantially since 2010 due to emission reductions, but remain above the WHO 2021 annual guideline of 5 µg/m3 in most English local authorities. Richmond upon Thames (8.33 µg/m3) is working towards the WHO guideline. Gera updates GAH annually when DEFRA publishes new PCM data.

Other London local authorities

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PM2.5 source: DEFRA Pollution Climate Mapping (PCM) model, population-weighted annual mean 2024 (popwmpm252024byUKlocalauthority.csv), uk-air.defra.gov.uk/data/pcm-data. Health context: UKHSA Fingertips indicator 93861 (fraction of mortality attributable to particulate air pollution), 2024. Open Government Licence v3.0. The Gera Air Health Index is computed by GeraRent; full methodology at /methodology/gera-air-health-index.