| index | 2020-05 | 2020-04 | 2020-03 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| no2 | 31 (Good) | 31 (Good) | 31 (Good) | 33 (Good) | 46 (Moderate) | 48 (Moderate) | 30 (Good) | 21 (Good) | 24 (Good) | 20 (Good) | 23 (Good) | 20 (Good) | 20 (Good) | 23 (Good) | 23 (Good) | 31 (Good) | 29 (Good) | 29 (Good) | 22 (Good) | 24 (Good) | 24 (Good) | 24 (Good) | 23 (Good) | 18 (Good) | 22 (Good) | 20 (Good) | 20 (Good) | 23 (Good) | 23 (Good) | 20 (Good) |
| so2 | 9.4 (Good) | 9.4 (Good) | 10 (Good) | 9.1 (Good) | 5.5 (Good) | 6.3 (Good) | 3.1 (Good) | 3 (Good) | 3.3 (Good) | 3.6 (Good) | 3.3 (Good) | 6 (Good) | 8.2 (Good) | 16 (Good) | 11 (Good) | 12 (Good) | 4.8 (Good) | 4.1 (Good) | 2.8 (Good) | 1.8 (Good) | 2 (Good) | 1.9 (Good) | 1.8 (Good) | 2.8 (Good) | 7.3 (Good) | 12 (Good) | 12 (Good) | 13 (Good) | 11 (Good) | 4.9 (Good) |
| pm10 | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 28 (Moderate) | 21 (Moderate) | 12 (Good) | 19 (Good) | 29 (Moderate) | 64 (Unhealthy for Sensitive Groups) | 138 (Very Unhealthy) | 163 (Very bad Hazardous) | 118 (Very Unhealthy) | 64 (Unhealthy for Sensitive Groups) | 56 (Unhealthy for Sensitive Groups) | 20 (Moderate) | 9.5 (Good) | 11 (Good) | 11 (Good) | 14 (Good) | - (Good) | 86 (Unhealthy) | 147 (Very Unhealthy) | 150 (Very bad Hazardous) | 99 (Unhealthy) | 69 (Unhealthy for Sensitive Groups) | 79 (Unhealthy for Sensitive Groups) |
Улаангом
| index | 2020-05 | 2020-04 | 2020-03 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| no2 | 31 | 31 | 31 | 33 | 46 | 48 | 30 | 21 | 24 | 20 | 23 | 20 | 20 | 23 | 23 | 31 | 29 | 29 | 22 | 24 | 24 | 24 | 23 | 18 | 22 | 20 | 20 | 23 | 23 | 20 |
| so2 | 9.4 | 9.4 | 10 | 9.1 | 5.5 | 6.3 | 3.1 | 3 | 3.3 | 3.6 | 3.3 | 6 | 8.2 | 16 | 11 | 12 | 4.8 | 4.1 | 2.8 | 1.8 | 2 | 1.9 | 1.8 | 2.8 | 7.3 | 12 | 12 | 13 | 11 | 4.9 |
| pm10 | - | - | - | - | - | - | - | 28 | 21 | 12 | 19 | 29 | 64 | 138 | 163 | 118 | 64 | 56 | 20 | 9.5 | 11 | 11 | 14 | - | 86 | 147 | 150 | 99 | 69 | 79 |