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Overview

South East · Non-metropolitan district

Test Valley

2026/27 view

Test Valley · ONS E07000093

Financial position as at 2026/27 Q1 quarter end

View sources
PEOPLE AND PLACE

Population and community profile

Latest official statistics
Population 135,201 2024
South East region 9,642,942
Test Valley represents 1.40% of the region's population
Five-year population change
+7,549 residents ↑ 5.9%
2019: 127,652 residents2020: 128,858 residents2021: 131,158 residents2022: 132,948 residents2023: 134,336 residents2024: 135,201 residents
Test Valley +5.9%
South East +4.9%
England +4.3%
Growth context

Test Valley's population grew over five years. Its change was 1.0 percentage points above the South East and 1.7 percentage points above England.

2019–2024 ONS mid-year estimates
Population estimates and labour-market measures from ONS/Nomis.Official profile
AIR QUALITY

How clean is the air?

Long-term particulate pollution across the council area, alongside measurements from local UK-AIR monitoring stations.

POPULATION-WEIGHTED ANNUAL MEAN

Fine particulate matter

No annual PM2.5 estimate is currently available.
LONG-TERM TREND

PM2.5 over time

Not enough annual data is available to show a trend.
CURRENT MONITORING

Latest station measurement

UK-AIR
PM2.5 9.5 µg/m³
Provisional
Last 24 hours 3.8 – 9.5 µg/m³
2026-09-22 02:00:00+01: 5.1 µg/m³ 2026-09-22 03:00:00+01: 5.6 µg/m³ 2026-09-22 04:00:00+01: 6.3 µg/m³ 2026-09-22 05:00:00+01: 4.6 µg/m³ 2026-09-22 06:00:00+01: 5.1 µg/m³ 2026-09-22 07:00:00+01: 6.2 µg/m³ 2026-09-22 08:00:00+01: 4.9 µg/m³ 2026-09-22 09:00:00+01: 5.1 µg/m³ 2026-09-22 10:00:00+01: 5.4 µg/m³ 2026-09-22 11:00:00+01: 4.4 µg/m³ 2026-09-22 12:00:00+01: 4.1 µg/m³ 2026-09-22 13:00:00+01: 3.8 µg/m³ 2026-09-22 14:00:00+01: 4.0 µg/m³ 2026-09-22 15:00:00+01: 4.3 µg/m³ 2026-09-22 16:00:00+01: 4.6 µg/m³ 2026-09-22 17:00:00+01: 4.6 µg/m³ 2026-09-22 18:00:00+01: 4.6 µg/m³ 2026-09-22 19:00:00+01: 4.7 µg/m³ 2026-09-22 20:00:00+01: 5.4 µg/m³ 2026-09-22 21:00:00+01: 5.6 µg/m³ 2026-09-22 22:00:00+01: 5.4 µg/m³ 2026-09-22 23:00:00+01: 5.5 µg/m³ 2026-09-23 00:00:00+01: 8.3 µg/m³ 2026-09-23 01:00:00+01: 9.5 µg/m³
Chilbolton Observatory Automatic Hydrocarbon Network; Automatic Urban and Rural Monitoring Network (AURN); Black Carbon; Heavy Metals; PAH Deposition; PAH Digitel (solid phase); Particle Concentrations and Numbers Network; Rural Automatic Mercury network; UKEAP: Acid Gases & Aerosol Network; UKEAP: MARGA Network; UKEAP: National Ammonia Monitoring Network; UKEAP: Precip-Net; UKEAP: Precip-Net; UKEAP: Rural NO2 · Rural Background Latest measurement: 2026-09-23 01:00:00+01

This is a measurement from an individual monitoring station and should not be interpreted as the current concentration across the whole council area.

HEALTH IMPACT

Particulate air pollution

No current OHID particulate-air-pollution mortality estimate is available.
Annual PM2.5 is Defra Pollution Climate Mapping data. Monitoring readings are station-specific UK-AIR measurements and may be provisional.