SmogRank / World / Latvia / 2024
Most polluted cities in Latvia, 2024
2 cities in Latvia ranked by their average PM2.5 over the 366 days; 2 above the WHO annual guideline (5.0 µg/m³). Worst: Riga at 8.5 µg/m³, #668 of 1,686 cities in the world. Cleanest: Ventspils at 7.8. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none for one of these days. Cities in the United States and Europe have it from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.
The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. 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, 2024 · Latvia now
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SmogRank, most polluted cities in Latvia, PM2.5, 2024, smogrank.com/lv/history/2024 (accessed 2 Oct 2026).
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