Cheadle Hulme vs London: PM2.5 compared

Over the last year, London's air was 29% more polluted than Cheadle Hulme's: PM2.5 averaged 9.7 µg/m³ against 7.5, on the 132 days both cities were measured. London had the dirtier air on 107 of those days, Cheadle Hulme on 24. London was over the WHO's daily guideline of 15 µg/m³ on 15 of them, Cheadle Hulme on 11.

Right now

Cheadle Hulme#629on the 24-hour board of 738, at 15 US AQI (2.7 µg/m³)

London#546on the 24-hour board of 738, at 18 US AQI (3.3 µg/m³)

The last year, day by day

Cheadle Hulme

London

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: Cheadle Hulme. Faded: London. A month shows once both share 10 such days. Dashed line: the WHO daily guideline, 15 µg/m³.

Year by year

Year	Cheadle Hulme	London	Days both measured	Days Cheadle Hulme was worse
2026 so far	44	54	79	13
2025	38	49	217	40
2024	39	48	54	13

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

Cheadle Hulme

21 Mar 20268728.3 µg/m³
9 Mar 20268024.4 µg/m³
5 Mar 20267723.0 µg/m³

London

26 Jan 202610838.5 µg/m³
9 Mar 20269231.2 µg/m³
8 Mar 20268426.9 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

Cheadle Hulme

Side by side with Manchester (the nearest), Gujranwala (the world's worst on 30 days).

London

Side by side with Borehamwood (the nearest), Birmingham (United Kingdom's 2nd worst on 30 days), Gujranwala (the world's worst on 30 days).

Use this page

SmogRank, PM2.5 daily means compared, Cheadle Hulme and London, 8 Oct 2025 – 7 Oct 2026, smogrank.com/compare/gb-cheadle-hulme/gb-london (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).