SmogRank / World / Slovakia / Trnava Region / December 2023
Most polluted cities in Trnava Region, Slovakia, December 2023
2 cities in Trnava Region, Slovakia ranked by their average PM2.5 over the 31 days. Worst: Trnava at 17.3 µg/m³, #220 of 2,197 cities in the world. Cleanest: Senica at 15.1. A city needs measurements on 70% of the days to be ranked.
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 Trnava Region, Slovakia, PM2.5, December 2023, smogrank.com/sk/region/trnava-region/history/2023-12 (accessed 7 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.