| 2022 12 15 2022 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2020 | | | | | | | | | | | | | | | | | | | | | | | | | AQI | | 24 AQI | > 200 | | | Ⅲ Ⅱ | Ⅰ | AQI | 200 48 | | 2 48 | | AQI 200 | 72 | AQI | 200 72 | | | AQI | 200 96 AQI | 300 48 | AQI 500 | | | | | | | | | AQI 200 48 | | | Ⅲ | AQI 200 72 | | Ⅱ | | AQI > 200 4 96 | AQI > 300 | 2 48 AQI | 500 | Ⅰ | | | | | | | | | | |