Air Pollutant Concentrations Trend - Mong Kok
| YEAR | NO2 | PM10 | PM2.5 |
|---|---|---|---|
| 2023 | 68 | 29 | 18 |
| 2022 | 64 | 26 | 16 |
| 2021 | 70 | 30 | 18 |
| 2020 | 74 | 29 | 18 |
| 2019 | 78 | 35 | 24 |
| 2018 | 79 | 36 | 24 |
| 2017 | 81 | 38 | 27 |
| 2016 | 78 | 37 | 26 |
| 2015 | 97 | 44 | 30 |
| 2014 | 100 | 48 | 31 |
| 2013 | 116 | 50 | 33 |
| 2012 | 120 | 47 | 32 |
| 2011 | 120 | 55 | 37 |
| 2010 | 113 | 55 | NA |
| 2009 | 108 | 55 | NA |
| 2008 | 96 | 62 | NA |
| 2007 | 101 | 66 | NA |
| 2006 | 97 | 67 | NA |
| 2005 | 93 | 69 | NA |
| 2004 | 105 | 75 | NA |
| 2003 | 98 | 70 | NA |
| 2002 | 91 | 63 | NA |
| 2001 | 99 | 73 | NA |
| 2000 | 84 | 60 | NA |
| 1999 | 86 | 67 | NA |
AAQI Long Term Trend - Mong Kok
| YEAR | NO2 | PM10 | PM2.5 |
|---|---|---|---|
| 2023 | 1.7 | 1.5 | 1.8 |
| 2022 | 1.6 | 1.3 | 1.6 |
| 2021 | 1.8 | 1.5 | 1.8 |
| 2020 | 1.9 | 1.5 | 1.8 |
| 2019 | 2.0 | 1.8 | 2.4 |
| 2018 | 2.0 | 1.8 | 2.4 |
| 2017 | 2.0 | 1.9 | 2.7 |
| 2016 | 2.0 | 1.9 | 2.6 |
| 2015 | 2.4 | 2.2 | 3.0 |
| 2014 | 2.5 | 2.4 | 3.1 |
| 2013 | 2.9 | 2.5 | 3.3 |
| 2012 | 3.0 | 2.4 | 3.2 |
| 2011 | 3.0 | 2.8 | 3.7 |
| 2010 | 2.8 | 2.8 | NA |
| 2009 | 2.7 | 2.8 | NA |
| 2008 | 2.4 | 3.1 | NA |
| 2007 | 2.5 | 3.3 | NA |
| 2006 | 2.4 | 3.4 | NA |
| 2005 | 2.3 | 3.5 | NA |
| 2004 | 2.6 | 3.8 | NA |
| 2003 | 2.5 | 3.5 | NA |
| 2002 | 2.3 | 3.2 | NA |
| 2001 | 2.5 | 3.7 | NA |
| 2000 | 2.1 | 3.0 | NA |
| 1999 | 2.2 | 3.4 | NA |