SmogRank / World / South Korea / North Chungcheong / April 2023

Most polluted cities in North Chungcheong, South Korea, April 2023

No city in North Chungcheong, South Korea had measurements on 70% of the days, so April 2023 has no board for North Chungcheong, South Korea.

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.

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 South Korea, April 2023 · North Chungcheong now