2024 4 25 | | 2024 | | | | | | 2024 1 | | 2020 6 | | | | | | | 2020 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AQI 200 2 | AQI 150 | | AQI | | AQI | | 24 48 | | | | | 2019 - 2023 | | | | 2020 | | | | | | | | | | | | | | | | | | | | | | | | | 1. O₃ | | | | 2. | | A | | | | | | |