SmogRank / World / Germany / North Rhine-Westphalia / August 2025
Most polluted cities in North Rhine-Westphalia, Germany, August 2025
34 cities in North Rhine-Westphalia, Germany ranked by their average PM2.5 over the 31 days. Worst: Gelsenkirchen at 9.6 µg/m³, #1,288 of 2,841 cities in the world. Cleanest: Netphen at 5.3. 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.
- 1Gelsenkirchen 0%
- 2Dortmund 0%
- 3Essen 0%
- 4Hagen 0%
- 5Unna 0%
- 6Oberhausen 0%
- 6Krefeld 0%
- 8Düsseldorf 0%
- 9Jüchen 0%
- 10Warstein 0%
- 10Köln 0%
- 12Niederzier 0%
- 12Duisburg 0%
- 14Titz 0%
- 14Kaldenkirchen 0%
- 14Bonn 0%
- 17Datteln 0%
- 18Wuppertal 0%
- 19Wesel 0%
- 19Münster 0%
- 19Mönchengladbach 0%
- 19Bottrop 0%
- 23Leverkusen 0%
- 24Soest 0%
- 25Ratingen 0%
- 25Borken 0%
- 27Sinnersdorf 0%
- 27Schwerte 0%
- 29Bielefeld 0%
- 30Hattingen 0%
- 30Aachen 0%
- 32Lüdenscheid 0%
- 33Roetgen 0%
- 34Netphen 0%
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
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SmogRank, most polluted cities in North Rhine-Westphalia, Germany, PM2.5, August 2025, smogrank.com/de/region/north-rhine-westphalia/history/2025-08 (accessed 6 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.