| index | 2019-03 | 2019-02 | 2019-01 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 | 2016-02 | 2016-01 | 2015-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm10 | 91 (Unhealthy) | 124 (Very Unhealthy) | 142 (Very Unhealthy) | 88 (Unhealthy) | 70 (Unhealthy for Sensitive Groups) | 52 (Unhealthy for Sensitive Groups) | 82 (Unhealthy) | 64 (Unhealthy for Sensitive Groups) | 97 (Unhealthy) | 94 (Unhealthy) | 109 (Unhealthy) | 295 (Very bad Hazardous) | 108 (Unhealthy) | 86 (Unhealthy) | 74 (Unhealthy for Sensitive Groups) | 35 (Moderate) | 33 (Moderate) | 94 (Unhealthy) | 65 (Unhealthy for Sensitive Groups) | 60 (Unhealthy for Sensitive Groups) | 59 (Unhealthy for Sensitive Groups) | 49 (Moderate) | 81 (Unhealthy) | 104 (Unhealthy) | 99 (Unhealthy) | 93 (Unhealthy) | 51 (Unhealthy for Sensitive Groups) | 35 (Moderate) | 223 (Very bad Hazardous) | 33 (Moderate) | 35 (Moderate) | 42 (Moderate) | 42 (Moderate) | 91 (Unhealthy) | 130 (Very Unhealthy) | - (Good) |
| co | 4 (Good) | 86 (Good) | 694 (Good) | 130 (Good) | 191 (Good) | 150 (Good) | 102 (Good) | 1 (Good) | 13 (Good) | 449 (Good) | 668 (Good) | 691 (Good) | 926 (Good) | 1 (Good) | 376 (Good) | 181 (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 191 (Good) | 313 (Good) | 313 (Good) | 211 (Good) | 315 (Good) | 688 (Good) | 952 (Good) | 550 (Good) |
| so2 | 8.9 (Good) | 18 (Good) | 33 (Good) | - (Good) | - (Good) | 8.2 (Good) | 6.5 (Good) | 5 (Good) | 6.5 (Good) | 9.1 (Good) | 22 (Good) | 42 (Good) | 54 (Moderate) | 37 (Good) | 15 (Good) | 4.7 (Good) | 1.9 (Good) | 3.9 (Good) | 5.8 (Good) | 8.3 (Good) | 11 (Good) | 23 (Good) | 58 (Moderate) | 52 (Moderate) | 49 (Good) | 43 (Good) | 15 (Good) | 113 (Unhealthy for Sensitive Groups) | 14 (Good) | 9.1 (Good) | 15 (Good) | 13 (Good) | 83 (Moderate) | 12 (Good) | 22 (Good) | - (Good) |
| no2 | 15 (Good) | 20 (Good) | 46 (Moderate) | 8.4 (Good) | 6.2 (Good) | 7.5 (Good) | 11 (Good) | 18 (Good) | 17 (Good) | 20 (Good) | 27 (Good) | 42 (Moderate) | 62 (Moderate) | 58 (Moderate) | 39 (Good) | 14 (Good) | 9.8 (Good) | 16 (Good) | 21 (Good) | 19 (Good) | 22 (Good) | 30 (Good) | 47 (Moderate) | 54 (Moderate) | 70 (Moderate) | 57 (Moderate) | 25 (Good) | 9.5 (Good) | 9.7 (Good) | 18 (Good) | 20 (Good) | 17 (Good) | 24 (Good) | 56 (Moderate) | 73 (Moderate) | 8.8 (Good) |
| o3 | 26 (Good) | 2.3 (Good) | 1.7 (Good) | 3.2 (Good) | 3.4 (Good) | 3.6 (Good) | 5 (Good) | 5.2 (Good) | 6.3 (Good) | 5.5 (Good) | 4.5 (Good) | 3.1 (Good) | 2.8 (Good) | 2.4 (Good) | 3.2 (Good) | 4.7 (Good) | - (Good) | - (Good) | - (Good) | 7.1 (Good) | 6.9 (Good) | 6.2 (Good) | 4.6 (Good) | 3.5 (Good) | 3.5 (Good) | 3.6 (Good) | 4.4 (Good) | 3.1 (Good) | 5.3 (Good) | 4.7 (Good) | 6.1 (Good) | 7.2 (Good) | 5.3 (Good) | 3.3 (Good) | 2.1 (Good) | 60 (Good) |
Urgakh naran
| index | 2019-03 | 2019-02 | 2019-01 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 | 2016-02 | 2016-01 | 2015-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| no2 | 15 | 20 | 46 | 8.4 | 6.2 | 7.5 | 11 | 18 | 17 | 20 | 27 | 42 | 62 | 58 | 39 | 14 | 9.8 | 16 | 21 | 19 | 22 | 30 | 47 | 54 | 70 | 57 | 25 | 9.5 | 9.7 | 18 | 20 | 17 | 24 | 56 | 73 | 8.8 |
| co | 4 | 86 | 694 | 130 | 191 | 150 | 102 | 1 | 13 | 449 | 668 | 691 | 926 | 1 | 376 | 181 | - | - | - | - | - | - | - | - | - | - | - | - | 191 | 313 | 313 | 211 | 315 | 688 | 952 | 550 |
| o3 | 26 | 2.3 | 1.7 | 3.2 | 3.4 | 3.6 | 5 | 5.2 | 6.3 | 5.5 | 4.5 | 3.1 | 2.8 | 2.4 | 3.2 | 4.7 | - | - | - | 7.1 | 6.9 | 6.2 | 4.6 | 3.5 | 3.5 | 3.6 | 4.4 | 3.1 | 5.3 | 4.7 | 6.1 | 7.2 | 5.3 | 3.3 | 2.1 | 60 |
| pm10 | 91 | 124 | 142 | 88 | 70 | 52 | 82 | 64 | 97 | 94 | 109 | 295 | 108 | 86 | 74 | 35 | 33 | 94 | 65 | 60 | 59 | 49 | 81 | 104 | 99 | 93 | 51 | 35 | 223 | 33 | 35 | 42 | 42 | 91 | 130 | - |
| so2 | 8.9 | 18 | 33 | - | - | 8.2 | 6.5 | 5 | 6.5 | 9.1 | 22 | 42 | 54 | 37 | 15 | 4.7 | 1.9 | 3.9 | 5.8 | 8.3 | 11 | 23 | 58 | 52 | 49 | 43 | 15 | 113 | 14 | 9.1 | 15 | 13 | 83 | 12 | 22 | - |