Air Pollution in Kwun Tong: Real-time Air Quality Index and smog alert.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| no2 | 49 (Moderate) | 51 (Moderate) | 40 (Good) | 29 (Good) | 39 (Good) | 50 (Moderate) | 44 (Moderate) | 47 (Moderate) | 44 (Moderate) | 44 (Moderate) | 47 (Moderate) | 50 (Moderate) | 39 (Good) | 51 (Moderate) | 41 (Moderate) | 35 (Good) | 54 (Moderate) | 43 (Moderate) | 38 (Good) | 42 (Moderate) | 45 (Moderate) | 56 (Moderate) | 35 (Good) | 42 (Moderate) | 46 (Moderate) | 37 (Good) | 40 (Moderate) | 52 (Moderate) | 40 (Moderate) |
| o3 | 22 (Good) | 58 (Good) | 55 (Good) | 56 (Good) | 60 (Good) | 59 (Good) | 88 (Moderate) | 90 (Moderate) | 82 (Moderate) | 42 (Good) | 26 (Good) | 28 (Good) | 64 (Good) | 48 (Good) | 59 (Good) | 49 (Good) | 49 (Good) | 38 (Good) | 60 (Good) | 81 (Moderate) | 41 (Good) | 35 (Good) | 29 (Good) | 48 (Good) | 37 (Good) | 62 (Good) | 71 (Moderate) | 54 (Good) | 58 (Good) |
| so2 | 4.7 (Good) | 3.8 (Good) | 5.3 (Good) | 4.8 (Good) | 4.4 (Good) | 7.6 (Good) | 7.1 (Good) | 5.9 (Good) | 6 (Good) | 6.7 (Good) | 7.2 (Good) | 7.3 (Good) | 6.5 (Good) | 5 (Good) | 3.3 (Good) | 5.2 (Good) | 5.4 (Good) | 7.5 (Good) | 6.5 (Good) | 5.9 (Good) | 5.6 (Good) | 4.9 (Good) | 4 (Good) | 3.5 (Good) | 5.4 (Good) | 3.4 (Good) | 3.8 (Good) | 4 (Good) | 4.8 (Good) |
| pm10 | 24 (Moderate) | 33 (Moderate) | 33 (Moderate) | 35 (Moderate) | 39 (Moderate) | 51 (Unhealthy for Sensitive Groups) | 62 (Unhealthy for Sensitive Groups) | 56 (Unhealthy for Sensitive Groups) | 46 (Moderate) | 32 (Moderate) | 32 (Moderate) | 21 (Moderate) | 30 (Moderate) | 31 (Moderate) | 33 (Moderate) | 33 (Moderate) | 52 (Unhealthy for Sensitive Groups) | 39 (Moderate) | 39 (Moderate) | 49 (Moderate) | 35 (Moderate) | 30 (Moderate) | 23 (Moderate) | 25 (Moderate) | 29 (Moderate) | 48 (Moderate) | 41 (Moderate) | 51 (Unhealthy for Sensitive Groups) | 40 (Moderate) |
| pm25 | 15 (Moderate) | 19 (Moderate) | 17 (Moderate) | 16 (Moderate) | 20 (Moderate) | 25 (Moderate) | 26 (Moderate) | 30 (Moderate) | 22 (Moderate) | 16 (Moderate) | 15 (Moderate) | 12 (Good) | 17 (Moderate) | 20 (Moderate) | 19 (Moderate) | 19 (Moderate) | 29 (Moderate) | 21 (Moderate) | 23 (Moderate) | 25 (Moderate) | 20 (Moderate) | 20 (Moderate) | 13 (Moderate) | 16 (Moderate) | 18 (Moderate) | 26 (Moderate) | 24 (Moderate) | 31 (Moderate) | 25 (Moderate) |
Kwun Tong
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| no2 | 49 | 51 | 40 | 29 | 39 | 50 | 44 | 47 | 44 | 44 | 47 | 50 | 39 | 51 | 41 | 35 | 54 | 43 | 38 | 42 | 45 | 56 | 35 | 42 | 46 | 37 | 40 | 52 | 40 |
| o3 | 22 | 58 | 55 | 56 | 60 | 59 | 88 | 90 | 82 | 42 | 26 | 28 | 64 | 48 | 59 | 49 | 49 | 38 | 60 | 81 | 41 | 35 | 29 | 48 | 37 | 62 | 71 | 54 | 58 |
| so2 | 4.7 | 3.8 | 5.3 | 4.8 | 4.4 | 7.6 | 7.1 | 5.9 | 6 | 6.7 | 7.2 | 7.3 | 6.5 | 5 | 3.3 | 5.2 | 5.4 | 7.5 | 6.5 | 5.9 | 5.6 | 4.9 | 4 | 3.5 | 5.4 | 3.4 | 3.8 | 4 | 4.8 |
| pm10 | 24 | 33 | 33 | 35 | 39 | 51 | 62 | 56 | 46 | 32 | 32 | 21 | 30 | 31 | 33 | 33 | 52 | 39 | 39 | 49 | 35 | 30 | 23 | 25 | 29 | 48 | 41 | 51 | 40 |
| pm25 | 15 | 19 | 17 | 16 | 20 | 25 | 26 | 30 | 22 | 16 | 15 | 12 | 17 | 20 | 19 | 19 | 29 | 21 | 23 | 25 | 20 | 20 | 13 | 16 | 18 | 26 | 24 | 31 | 25 |
* Pollution data source:
https://openaq.org
(Hong Kong)
The data is licensed under CC-By 4.0