| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 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 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2016-12 | 2016-08 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| co:ppm | 0.94 (Good) | 0.9 (Good) | 0.97 (Good) | 1.1 (Good) | 1.4 (Good) | 1.5 (Good) | 0.97 (Good) | 1.2 (Good) | 1.2 (Good) | 0.72 (Good) | 0.96 (Good) | 0.92 (Good) | 0.97 (Good) | 0.68 (Good) | 0.74 (Good) | 0.58 (Good) | 1.2 (Good) | 1.4 (Good) | 1.3 (Good) | 1.7 (Good) | 1.6 (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 1.6 (Good) | 1.1 (Good) | 1.2 (Good) | 1.3 (Good) | 1.2 (Good) | 1.3 (Good) | 1.4 (Good) | 1.3 (Good) | 0.98 (Good) | 0.95 (Good) | 0.91 (Good) | 0.86 (Good) | 1 (Good) |
| no2:ppm | 0.02 (Good) | 0.02 (Good) | 0.02 (Good) | 0.03 (Good) | 0.03 (Good) | 0.04 (Good) | 0.04 (Good) | 0.03 (Good) | 0.03 (Good) | 0.02 (Good) | 0.02 (Good) | 0.02 (Good) | 0.03 (Good) | 0.02 (Good) | 0.03 (Good) | 0.03 (Good) | 0.05 (Good) | 0.04 (Good) | 0.04 (Good) | 0.04 (Good) | 0.03 (Good) | 0.02 (Good) | 0.02 (Good) | 0.02 (Good) | 0.03 (Good) | 0.03 (Good) | 0.03 (Good) | 0.03 (Good) | 0.04 (Good) | 0.04 (Good) | 0.03 (Good) | 0.03 (Good) | 0.02 (Good) | 0.02 (Good) | 0.02 (Good) | 0.02 (Good) | - (Good) | - (Good) |
| pm10 | 34 (Moderate) | 43 (Moderate) | 49 (Moderate) | 78 (Unhealthy for Sensitive Groups) | 69 (Unhealthy for Sensitive Groups) | 65 (Unhealthy for Sensitive Groups) | 60 (Unhealthy for Sensitive Groups) | 50 (Unhealthy for Sensitive Groups) | 50 (Moderate) | 34 (Moderate) | 44 (Moderate) | 42 (Moderate) | 60 (Unhealthy for Sensitive Groups) | 38 (Moderate) | 49 (Moderate) | 51 (Unhealthy for Sensitive Groups) | 88 (Unhealthy) | 75 (Unhealthy for Sensitive Groups) | 72 (Unhealthy for Sensitive Groups) | 53 (Unhealthy for Sensitive Groups) | 48 (Moderate) | 44 (Moderate) | 50 (Unhealthy for Sensitive Groups) | 39 (Moderate) | 39 (Moderate) | 47 (Moderate) | 54 (Unhealthy for Sensitive Groups) | 72 (Unhealthy for Sensitive Groups) | 68 (Unhealthy for Sensitive Groups) | 65 (Unhealthy for Sensitive Groups) | 61 (Unhealthy for Sensitive Groups) | 52 (Unhealthy for Sensitive Groups) | 47 (Moderate) | 40 (Moderate) | 43 (Moderate) | 44 (Moderate) | 248 (Very bad Hazardous) | 91 (Unhealthy) |
Rama IV Rd., Pathum Wan
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 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 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2016-12 | 2016-08 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm10 | 34 | 43 | 49 | 78 | 69 | 65 | 60 | 50 | 50 | 34 | 44 | 42 | 60 | 38 | 49 | 51 | 88 | 75 | 72 | 53 | 48 | 44 | 50 | 39 | 39 | 47 | 54 | 72 | 68 | 65 | 61 | 52 | 47 | 40 | 43 | 44 | 248 | 91 |
| co:ppm | 0.94 | 0.9 | 0.97 | 1.1 | 1.4 | 1.5 | 0.97 | 1.2 | 1.2 | 0.72 | 0.96 | 0.92 | 0.97 | 0.68 | 0.74 | 0.58 | 1.2 | 1.4 | 1.3 | 1.7 | 1.6 | - | - | - | - | 1.6 | 1.1 | 1.2 | 1.3 | 1.2 | 1.3 | 1.4 | 1.3 | 0.98 | 0.95 | 0.91 | 0.86 | 1 |
| no2:ppm | 0.02 | 0.02 | 0.02 | 0.03 | 0.03 | 0.04 | 0.04 | 0.03 | 0.03 | 0.02 | 0.02 | 0.02 | 0.03 | 0.02 | 0.03 | 0.03 | 0.05 | 0.04 | 0.04 | 0.04 | 0.03 | 0.02 | 0.02 | 0.02 | 0.03 | 0.03 | 0.03 | 0.03 | 0.04 | 0.04 | 0.03 | 0.03 | 0.02 | 0.02 | 0.02 | 0.02 | - | - |