SmogRank / World / Germany / North Rhine-Westphalia / June 2023
Most polluted cities in North Rhine-Westphalia, Germany, June 2023
32 cities in North Rhine-Westphalia, Germany ranked by their average PM2.5 over the 30 days. Worst: Krefeld at 15.8 µg/m³, #350 of 1,549 cities in the world. Cleanest: Netphen at 7.4. 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.
- 1Roetgen 7%
- 2Krefeld 0%
- 3Datteln 0%
- 4Duisburg 0%
- 5Gelsenkirchen 0%
- 6Unna 0%
- 7Essen 0%
- 8Mönchengladbach 0%
- 9Düsseldorf 0%
- 10Hagen 0%
- 11Niederzier 0%
- 12Titz 0%
- 12Solingen 0%
- 12Bielefeld 0%
- 15Borken 0%
- 15Bergheim 0%
- 17Dortmund 0%
- 17Aachen 0%
- 19Oberhausen 0%
- 20Köln 0%
- 21Warstein 0%
- 22Münster 0%
- 22Bonn 0%
- 24Lüdenscheid 0%
- 25Soest 0%
- 25Ratingen 0%
- 27Marsberg 0%
- 28Leverkusen 0%
- 29Wuppertal 0%
- 30Schwerte 0%
- 31Hattingen 0%
- 32Netphen 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, June 2023, smogrank.com/de/region/north-rhine-westphalia/history/2023-06 (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.