SmogRank / World / Japan / Kagawa / April 2023

Most polluted cities in Kagawa, Japan, April 2023

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

OpenAQ's archive, where our readings come from, has almost none for 3 of these 30 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; elsewhere a city's average is over its other days. Why.

Kagawa has 8 cities ranked over the last 30 days, but none here: most of its monitors have no readings for April 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, April 2023 · All cities in Japan, April 2023 · Kagawa now