| index | 2020-03 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-05 | 2019-04 | 2019-02 | 2018-09 | 2018-08 |
|---|---|---|---|---|---|---|---|---|---|---|
| no2 | 48 (Moderate) | 71 (Moderate) | 33 (Good) | 37 (Good) | 38 (Good) | 38 (Good) | 49 (Moderate) | 86 (Moderate) | 53 (Moderate) | 42 (Moderate) |
| so2 | 20 (Good) | 10 (Good) | 7.7 (Good) | 7.5 (Good) | 6.9 (Good) | 14 (Good) | 12 (Good) | 13 (Good) | 7.3 (Good) | 6.4 (Good) |
| o3 | 34 (Good) | 46 (Good) | 31 (Good) | 23 (Good) | 26 (Good) | 49 (Good) | 40 (Good) | 31 (Good) | 25 (Good) | 40 (Good) |
East Arjun Nagar, Delhi - CPCB
| index | 2020-03 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-05 | 2019-04 | 2019-02 | 2018-09 | 2018-08 |
|---|---|---|---|---|---|---|---|---|---|---|
| no2 | 48 | 71 | 33 | 37 | 38 | 38 | 49 | 86 | 53 | 42 |
| so2 | 20 | 10 | 7.7 | 7.5 | 6.9 | 14 | 12 | 13 | 7.3 | 6.4 |
| o3 | 34 | 46 | 31 | 23 | 26 | 49 | 40 | 31 | 25 | 40 |