SmogRank / Cleaner or dirtier / United Kingdom
United Kingdom: cleaner or dirtier, 2024
In United Kingdom, 4 cities have enough days in both years to compare 2024 with the same days of 2023: 0 got dirtier and 4 cleaner.
The 4 cities that got cleaner, biggest fall first
| # | City | 2023 | 2024 | Change |
|---|---|---|---|---|
| 1 | DagenhamEngland, United Kingdom | 45 | 31 | −2.5 µg/m³−31% |
| 2 | GraysEngland, United Kingdom | 53 | 49 | −1.5 µg/m³−14% |
| 3 | BexleyEngland, United Kingdom | 46 | 42 | −0.7 µg/m³−8% |
| 4 | LondonEngland, United Kingdom | 47 | 46 | −0.2 µg/m³−2% |
Means in US AQI over the days a city was measured in both years, the same calendar days each year; a city needs 55% of the days paired, and at least 30. The change is in µg/m³ and per cent. How we compare.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Updated 2026-10-07 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.