| Indices | Classification Scheme | Rank | Classification of Drought |
| SPI | >0 | 1 | No Drought |
| −1 < x ≤ 0 | 2 | Abnormal Dry | |
| −1.5 < x ≤ −1 | 3 | Moderate | |
| −2 < x ≤ −1.5 | 4 | Severe | |
| ≤ −2 | 5 | Extreme | |
| VCI | 50 < x ≤ 100 | 1 | No Drought |
| 35 < x ≤ 50 | 2 | Abnormal Dry | |
| 25 < x ≤ 35 | 3 | Moderate | |
| 10 < x ≤ 25 | 4 | Severe | |
| ≤10 | 5 | Extreme | |
| TCI | 50 < x ≤ 100 | 1 | No Drought |
| 35 < x ≤ 50 | 2 | Abnormal Dry | |
| 25 < x ≤ 35 | 3 | Moderate | |
| 10 < x ≤ 25 | 4 | Severe | |
| ≤10 | 5 | Extreme |