Birmingham vs Cannock: PM2.5 compared

Over the last year, Birmingham's air was 11% more polluted than Cannock's: PM2.5 averaged 8.2 µg/m³ against 7.4, on the 144 days both cities were measured. Birmingham had the dirtier air on 121 of those days, Cannock on 20. Birmingham was over the WHO's daily guideline of 15 µg/m³ on 13 of them, Cannock on 13.

Right now

Birmingham#415on the 24-hour board of 738, at 25 US AQI (4.5 µg/m³)

Cannock#490on the 24-hour board of 738, at 21 US AQI (3.8 µg/m³)

The last year, day by day

Birmingham

Cannock

Each city's daily mean from 8 Oct 2025 to 7 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

Monthly means in µg/m³ over the days both cities were measured. Solid: Birmingham. Faded: Cannock. A month shows once both share 10 such days. Dashed line: the WHO daily guideline, 15 µg/m³.

Year by year

Year	Birmingham	Cannock	Days both measured	Days Birmingham was worse
2026 so far	49	45	92	72
2025	40	35	222	201

Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.

Each city's worst days

Birmingham

5 Mar 20269030.0 µg/m³
21 Mar 20268828.9 µg/m³
20 Mar 20268125.1 µg/m³

Cannock

5 Mar 20269029.8 µg/m³
21 Mar 20269029.8 µg/m³
20 Mar 20268024.7 µg/m³

Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, over the days both cities were measured in the last year. Each date opens that day's world board.

Compare either city with another

Birmingham

Side by side with London (United Kingdom's worst on 30 days), Gujranwala (the world's worst on 30 days).

Cannock

Side by side with London (United Kingdom's worst on 30 days), Gujranwala (the world's worst on 30 days).

Use this page

SmogRank, PM2.5 daily means compared, Birmingham and Cannock, 8 Oct 2025 – 7 Oct 2026, smogrank.com/compare/gb-birmingham/gb-cannock (accessed 8 Oct 2026).

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.

The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.

Updated 2026-10-08 20:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published (why we use them).