SmogRank / World / The Netherlands / Utrecht / October 2026
Most polluted cities in Utrecht, The Netherlands, October 2026
2 cities in Utrecht, The Netherlands ranked by their average PM2.5 so far (5 of 31 days). Worst: Utrecht at 7.5 µg/m³, #946 of 2,246 cities in the world. Cleanest: Lopik at 6.2. 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.
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
All cities in the world, October 2026 · All cities in The Netherlands, October 2026 · Utrecht now
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SmogRank, most polluted cities in Utrecht, The Netherlands, PM2.5, October 2026 (so far), smogrank.com/nl/region/utrecht/history/2026-10 (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.