SmogRank / World / Japan / Yamaguchi / March 2023

Most polluted cities in Yamaguchi, Japan, March 2023

No city in Yamaguchi, Japan had measurements on 70% of the days, so March 2023 has no board for Yamaguchi, Japan.

OpenAQ's archive, where our readings come from, has almost none for 20 of these 31 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; many cities elsewhere are missing from this board, not clean. Why.

Yamaguchi has 13 cities ranked over the last 30 days, but none here: most of its monitors have no readings for March 2023 in OpenAQ's archive, where ours come from, or too few to rank. Cities missing from this board weren't clean, just not measured.

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, March 2023 · All cities in Japan, March 2023 · Yamaguchi now