SmogRank / Copenhagen / Malmö

Copenhagen vs Malmö: PM2.5 compared

Over the last year, Copenhagen's air was 10% more polluted than Malmö's: PM2.5 averaged 11.5 µg/m³ against 10.5, on the 120 days both cities were measured. Copenhagen had the dirtier air on 48 of those days, Malmö on 70. Copenhagen was over the WHO's daily guideline of 15 µg/m³ on 32 of them, Malmö on 23.

Right now

Copenhagen–not on the 24-hour board right now
Malmö–not on the 24-hour board right now

The last year, day by day

Copenhagen
Malmö
Each city's daily mean from 9 Oct 2025 to 8 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

Nov2025DecCopenhagen, Jan 2026: 20.5 µg/m³Malmö, Jan 2026: 14.8 µg/m³Jan2026Copenhagen, Feb 2026: 8.1 µg/m³Malmö, Feb 2026: 8.7 µg/m³FebCopenhagen, Mar 2026: 15.9 µg/m³Malmö, Mar 2026: 14.1 µg/m³MarCopenhagen, Apr 2026: 7.0 µg/m³Malmö, Apr 2026: 7.5 µg/m³AprMayJunJulAugSepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Copenhagen. Faded: Malmö. A month shows once both share 10 such days. Dashed line: the WHO daily guideline, 15 µg/m³.

Each city's worst days

Copenhagen

Malmö

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

Copenhagen

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

Malmö

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

Use this page

SmogRank, PM2.5 daily means compared, Copenhagen and Malmö, 9 Oct 2025 – 8 Oct 2026, smogrank.com/compare/dk-copenhagen/se-malmoe (accessed 9 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 2026-10-09 12:07 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).