SmogRank / World / China / Liaoning / January 2023

Most polluted cities in Liaoning, China, January 2023

We don't read China's government monitoring network: it publishes only on its own website, and we are building the reader for it. Most cities in China are missing here, not clean. The cities shown are measured by community low-cost sensors, tagged as such. Why.

No city in Liaoning, China had measurements on 70% of the days, so January 2023 has no board for Liaoning, China.

OpenAQ's archive, where our readings come from, has almost none for 7 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; 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, January 2023 · All cities in China, January 2023 · Liaoning now