| 空气质量分指数IAQI | 污染度浓度限值 | |||||
| SO2 | NO2 | PM10 | PM2.5 | CO | O3 | |
| 24 h | 24 h | 24 h | 24 h | 24 h | 8 h | |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 50 | 50 | 40 | 50 | 35 | 2 | 100 |
| 100 | 150 | 80 | 150 | 75 | 4 | 160 |
| 150 | 475 | 180 | 250 | 115 | 14 | 215 |
| 200 | 800 | 280 | 350 | 150 | 24 | 365 |
| 300 | 1600 | 565 | 420 | 250 | 36 | 800 |
| 400 | 2100 | 750 | 500 | 350 | 48 | 1000 |
| 500 | 2620 | 940 | 600 | 500 | 60 | 1200 |