| index | 2020-05 | 2020-04 | 2020-01 | 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 | 46 (Moderate) | 47 (Moderate) | 47 (Moderate) | 38 (Good) | 35 (Good) | 34 (Good) | 40 (Good) | 33 (Good) | 39 (Good) | 26 (Good) | 25 (Good) | 26 (Good) | 27 (Good) | 38 (Good) | 37 (Good) | 42 (Moderate) | 38 (Good) | 28 (Good) | 27 (Good) | 24 (Good) | 27 (Good) | 32 (Good) | 28 (Good) | 27 (Good) | 37 (Good) | 35 (Good) | 35 (Good) | 33 (Good) | 24 (Good) | 40 (Good) |
| so2 | 5.3 (Good) | 5.2 (Good) | 7.2 (Good) | 5.3 (Good) | 9.1 (Good) | 8.5 (Good) | 4.3 (Good) | 2.2 (Good) | 3.2 (Good) | 3.8 (Good) | 2.7 (Good) | 3.7 (Good) | 6.6 (Good) | 17 (Good) | 9.6 (Good) | 14 (Good) | 11 (Good) | 7.7 (Good) | 3.9 (Good) | 2.3 (Good) | 3.4 (Good) | 4.4 (Good) | 3.4 (Good) | 7.1 (Good) | 9.8 (Good) | 13 (Good) | 15 (Good) | 14 (Good) | 10 (Good) | 8.4 (Good) |
| pm10 | 9 (Good) | 9.1 (Good) | - (Good) | 8 (Good) | 6.9 (Good) | 62 (Unhealthy for Sensitive Groups) | 55 (Unhealthy for Sensitive Groups) | 22 (Moderate) | 30 (Moderate) | 105 (Unhealthy) | 283 (Very bad Hazardous) | 42 (Moderate) | 33 (Moderate) | 221 (Very bad Hazardous) | 104 (Unhealthy) | 73 (Unhealthy for Sensitive Groups) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 11 (Good) | 68 (Unhealthy for Sensitive Groups) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) |
Баруун-Урт
| index | 2020-05 | 2020-04 | 2020-01 | 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 | 46 | 47 | 47 | 38 | 35 | 34 | 40 | 33 | 39 | 26 | 25 | 26 | 27 | 38 | 37 | 42 | 38 | 28 | 27 | 24 | 27 | 32 | 28 | 27 | 37 | 35 | 35 | 33 | 24 | 40 |
| so2 | 5.3 | 5.2 | 7.2 | 5.3 | 9.1 | 8.5 | 4.3 | 2.2 | 3.2 | 3.8 | 2.7 | 3.7 | 6.6 | 17 | 9.6 | 14 | 11 | 7.7 | 3.9 | 2.3 | 3.4 | 4.4 | 3.4 | 7.1 | 9.8 | 13 | 15 | 14 | 10 | 8.4 |
| pm10 | 9 | 9.1 | - | 8 | 6.9 | 62 | 55 | 22 | 30 | 105 | 283 | 42 | 33 | 221 | 104 | 73 | - | - | - | - | - | 11 | 68 | - | - | - | - | - | - | - |