PM2.5 to AQI Converter
Convert between PM2.5 concentration and the US Air Quality Index.
AQI Scale
| AQI | Category | PM2.5 |
|---|---|---|
| 0–50 | Good | 0–12.0 |
| 51–100 | Moderate | 12.1–35.4 |
| 101–150 | Unhealthy (Sensitive) | 35.5–55.4 |
| 151–200 | Unhealthy | 55.5–150.4 |
| 201–300 | Very Unhealthy | 150.5–250.4 |
| 301–500 | Hazardous | 250.5–500.4 |