SmogRank / World / United Kingdom / England / March 2024

Most polluted cities in England, United Kingdom, March 2024

28 cities in England, United Kingdom ranked by their average PM2.5 over the 31 days. Worst: Birmingham at 11.3 µg/m³, #275 of 1,643 cities in the world. Cleanest: Dagenham at 6.3. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

← Birmingham 8% 8%0

Every city in England, United Kingdom ranked for March 2024, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.

1Birminghamlow-cost sensors
8%
2Dartford
4%
3Leeds
0%
4Grays
0%
5Manchester
0%
6Bexley
0%
7London
0%
8Norwich
0%
8Brighton
0%
10Canterbury
0%
11Sheffield
0%
12York
0%
13Newcastle upon Tyne
0%
14Chesterfield
0%
15Sandy
0%
16Burwell
0%
17Stoke-on-Trent
0%
17Liverpool
0%
17Hayes
0%
20Halesworth
0%
21Plymouth
0%
22Reading
0%
23Preston
0%
24Middlesbrough
0%
25Royal Leamington Spa
0%
26Warrington
0%
27Bristol
0%
28Dagenham
0%

Low-cost sensors: consumer units, counted only in cities with no government-grade monitor; they read close to reference monitors on the whole, but 15 to 25% high in humid air. How we use them.

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

All cities in the world, March 2024 · All cities in United Kingdom, March 2024 · England now

Use this board

SmogRank, most polluted cities in England, United Kingdom, PM2.5, March 2024, smogrank.com/gb/region/england/history/2024-03 (accessed 6 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.