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Annual AQI Trend

Air Pollutant Concentrations Trend - Yuen Long

YEARNO2PM10PM2.5
2022372516
2021403017
2020323016
2019443720
2018433720
2017414022
2016463723
2015454430
2014525035
2013545637
2012494429
2011545436
2010544932
2009525133
2008566041
2007556443
2006586243
2005586242
20046771NA
20036061NA
20025653NA
20016157NA
20005756NA
19996062NA
* Pollutant concentrations in micrograms per cubic metre (μg/m3)

AAQI Long Term Trend - Yuen Long

YEARNO2PM10PM2.5
20220.91.31.6
20211.01.51.7
20200.81.51.6
20191.11.92.0
20181.11.92.0
20171.02.02.2
20161.21.92.3
20151.12.23.0
20141.32.53.5
20131.42.83.7
20121.22.22.9
20111.42.73.6
20101.42.53.2
20091.32.63.3
20081.43.04.1
20071.43.24.3
20061.53.14.3
20051.53.14.2
20041.73.6NA
20031.53.1NA
20021.42.7NA
20011.52.9NA
20001.42.8NA
19991.53.1NA