| AQI | PM2.5 mg/m3 | PM10 mg/m3 | SO2 mg/m3 | CO mg/m3 | NO2 mg/m3 | O3 mg/m3 |
2015 | 71.7 | 49.1 | 68.0 | 20.4 | 1.1 | 24.0 | 83.9 |
2016 | 70.5 | 46.8 | 66.4 | 17.3 | 1.0 | 26.9 | 84.6 |
2017 | 67.8 | 44.0 | 61.9 | 14.8 | 0.8 | 25.3 | 84.7 |