Research Article
Atmospheric PM2.5 Concentration Prediction Based on Time Series and Interactive Multiple Model Approach
Table 1
Air quality standard based on ambient air quality index (AQI).
| AQI | Air quality index level | Air quality index category | Health implications |
| 0∼50 | Level 1 | Excellent | No air pollution | 50∼100 | Level 2 | Good | Air quality is acceptable | 100∼150 | Level 3 | Slight pollution | Symptoms of irritation appear | 150∼200 | Level 4 | Moderate pollution | Respiratory system is affected | 200∼300 | Level 5 | Heavy pollution | Symptoms of patients increase | >300 | Level 6 | Severe pollution | Diseases appear |
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