Air Quality in Three Rivers
Maximum modelled annual-mean 8 μg/m³ PM2.5 and 18 μg/m³ NO2 in Three Rivers (DEFRA 2024), with ONS life expectancy of 82.8 years. Part of Hertfordshire.
What is the air quality in Three Rivers?
In Three Rivers, the highest modelled annual-mean concentrations in 2024 were 8 μg/m³ for PM2.5 and 18 μg/m³ for NO2, per DEFRA's UK-AIR Local Authority compliance data, and ONS life expectancy at birth is 82.8 years. The WHO 2021 annual-mean guidelines are 5 μg/m³ (PM2.5) and 10 μg/m³ (NO2).
| Pollutant | Three Rivers (max annual mean) | Compliance | WHO 2021 | UK limit |
|---|---|---|---|---|
| PM2.5 | 8 μg/m³ | Compliant | 5 μg/m³ | 20 μg/m³ |
| NO2 | 18 μg/m³ | Compliant | 10 μg/m³ | 40 μg/m³ |
Three Rivers within Hertfordshire
Hertfordshire scores 60.3/100 on the Gera Healthy-Place Index (rank 84), with 91.7% of GP practices rated Good or Outstanding by the CQC and life expectancy of 82.6 years.
See the full Healthy-Place profile for Hertfordshire →Air quality in Three Rivers: FAQs
- What is the air pollution level in Three Rivers?
- The maximum modelled annual-mean air pollution in Three Rivers in 2024 was 8 μg/m³ for fine particulate matter (PM2.5) and 18 μg/m³ for nitrogen dioxide (NO2), from DEFRA UK-AIR compliance data. DEFRA reports the maximum across the authority for limit-value assessment; the WHO 2021 guideline annual means are 5 μg/m³ (PM2.5) and 10 μg/m³ (NO2).
- What is the life expectancy in Three Rivers?
- Life expectancy at birth in Three Rivers is 82.8 years (combined male and female, ONS). This is a population period estimate, not a prediction for any individual.
- Where does Three Rivers sit within the Healthy-Place ranking?
- Three Rivers is a lower-tier district within Hertfordshire, which scores 60.3/100 on the Gera Healthy-Place Index (rank 84) and has 91.7% of GP practices rated Good or Outstanding by the CQC. The Healthy-Place Index is computed at upper-tier authority level because air, life expectancy and GP-access data align there.
Healthcare in Three Rivers
A GeraClinic UK-registered clinician can see you by secure video from anywhere in the UK — useful for air-quality-related concerns such as asthma or COPD.
Contains public sector information published by Gera Systems and licensed under the Open Government Licence v3.0 (source data). Source: Gera Healthy-Place Index — composite of DEFRA + ONS + CQC open data (Air 2024 calendar year; life expectancy 2017-19; GP ratings 2026-06-01, published 19 June 2026).