About this data

Source: Defra, Air quality statistics in the UK, 1987 to 2025

• The population exposure reduction target requires average exposure to PM2.5 in England to be at least 35% lower in 2040 than in 2018.
• Exposure is measured at urban background monitoring stations, which represent the air where most people live. Defra publishes the change rounded to the nearest whole number; see its methodology page for how it is calculated.

This chart appears in Air pollution.