EPD - Annual AQI Trend

Annual AQI Trend

General Stations

Central/WesternSouthernEasternKwun TongSham Shui PoKwai ChungTsuen WanTseung Kwan OYuen LongTuen MunTung ChungTai PoSha TinNorthTap Mun

Roadside Stations

Causeway BayCentralMong Kok

Annual AQI Trend

Air Pollutant Concentrations Trend

Air Pollutant Concentrations Trend - Tung Chung

YEAR	NO₂	PM₁₀	PM_2.5
2022	25	23	14
2021	26	26	17
2020	28	25	14
2019	33	30	19
2018	33	31	18
2017	36	34	21
2016	36	33	21
2015	40	36	22
2014	45	39	24
2013	49	42	26
2012	43	45	28
2011	51	47	32
2010	44	45	29
2009	45	46	30
2008	49	52	37
2007	46	54	39
2006	47	56	40
2005	46	57	40
2004	52	62	47
2003	45	54	40
2002	43	46	32
2001	46	49	35
2000	45	45	32
1999	43	48	32

* Pollutant concentrations in micrograms per cubic metre (μg/m³)

AAQI Long Term Trend - Tung Chung

YEAR	NO₂	PM₁₀	PM_2.5
2022	0.6	1.2	1.4
2021	0.7	1.3	1.7
2020	0.7	1.3	1.4
2019	0.8	1.5	1.9
2018	0.8	1.6	1.8
2017	0.9	1.7	2.1
2016	0.9	1.7	2.1
2015	1.0	1.8	2.2
2014	1.1	2.0	2.4
2013	1.2	2.1	2.6
2012	1.1	2.3	2.8
2011	1.3	2.4	3.2
2010	1.1	2.3	2.9
2009	1.1	2.3	3.0
2008	1.2	2.6	3.7
2007	1.2	2.7	3.9
2006	1.2	2.8	4.0
2005	1.2	2.9	4.0
2004	1.3	3.1	4.7
2003	1.1	2.7	4.0
2002	1.1	2.3	3.2
2001	1.2	2.5	3.5
2000	1.1	2.3	3.2
1999	1.1	2.4	3.2

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