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, #669 of 1,689 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.
China's Air Quality Index (HJ 633-2012), PM2.5 individual index. 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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