Hong Kong
2 km around Wan Chai
Air quality now
AQI 66
50.9%
tree cover
Healthy tree cover
Asia · air quality report · 7 cities
Hong Kong air quality today The AQI right now, city by city
Right now the 7 cities Airleaf measures in Hong Kong average AQI 72 (moderate). The worst air is in Tin Shui Wai, at AQI 87, and the cleanest in Hong Kong, at AQI 66.
At ground stations alone, which measure rather than estimate, the average is AQI 72 across 7 cities. None of the 7 measured cities is over AQI 100 today.
Average right now
AQI 72
Moderate
US EPA index, across 7 cities
- cities measured
- 7
- worst air: Tin Shui Wai
- 87
- cleanest air: Hong Kong
- 66
- average tree cover
- 60.1%
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Hong Kong · average AQI 72
Air quality right now in all 7 cities in Hong Kong
Moderate
Tin Shui Wai
2 km around Kingswood Villas
Air quality now
AQI 87
37.0%
tree cover
Healthy tree cover
Sha Tin
2 km around Tai Wai
Air quality now
AQI 68
67.3%
tree cover
Healthy tree cover
Tseung Kwan O
2 km around Hong Kong
Air quality now
AQI 69
73.8%
tree cover
Healthy tree cover
Fanling
2 km around Fanling
Air quality now
AQI 69
53.8%
tree cover
Healthy tree cover
Tsing Yi Town
2 km around Tsing Yi
Air quality now
AQI 69
54.5%
tree cover
Healthy tree cover
San Tung Chung Hang
2 km around Tung Chung
Air quality now
AQI 73
83.1%
tree cover
Healthy tree cover
Across the country
How clean is the air across Hong Kong today?
None of the 7 measured cities is over AQI 100 today. Unusually sensitive people should consider limiting long outdoor exertion.
7 measured cities
- Moderate7 (100%)
Every measured city, including model estimates where no ground station is near.
Against everywhere else
How does Hong Kong compare with other countries?
Right now the cities of Hong Kong average cleaner air than 22% of the 171 countries Airleaf has enough cities to average, and more tree cover than 99%.
Cleaner air than…
- Hong Kong
- Beats 22%
More tree cover than…
- Hong Kong
- Beats 99%
See the most polluted and cleanest air rankings for every country.
Is this the same as Hong Kong's AQHI?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. Hong Kong's Environmental Protection Department publishes the Air Quality Health Index (AQHI) on a 1 to 10+ scale: 1–3 low, 4–6 moderate, 7 high, 8–10 very high and 10+ serious. It is a health-risk scale built from short-term pollutant levels, not a converted AQI, so the two numbers can't be compared directly.
Deforestation · 2001–2025
How much forest has Hong Kong lost?
Since 2001, Hong Kong has lost about 913 hectares of forest (about 1,300 football pitches): 1.6% of the forest it had in 2000. The biggest cause was towns and roads (42%). About 443 hectares (49%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 913 haabout 1,300 football pitches
- Share of its forest
- 1.6%of what there was in 2000
- Cleared for good
- 443 hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 3 ha | 4 ha | 7 ha |
| 2002 | 14 ha | 2 ha | 16 ha |
| 2003 | 5 ha | 2 ha | 7 ha |
| 2004 | 14 ha | 3 ha | 17 ha |
| 2005 | 5 ha | 4 ha | 9 ha |
| 2006 | 3 ha | 10 ha | 13 ha |
| 2007 | 6 ha | 10 ha | 16 ha |
| 2008 | 15 ha | 11 ha | 26 ha |
| 2009 | 22 ha | 27 ha | 50 ha |
| 2010 | 9 ha | 3 ha | 12 ha |
| 2011 | 9 ha | 5 ha | 13 ha |
| 2012 | 5 ha | 8 ha | 13 ha |
| 2013 | 3 ha | 2 ha | 5 ha |
| 2014 | 11 ha | 16 ha | 27 ha |
| 2015 | 16 ha | 8 ha | 24 ha |
| 2016 | 22 ha | 19 ha | 41 ha |
| 2017 | 33 ha | 54 ha | 87 ha |
| 2018 | 28 ha | 119 ha | 147 ha |
| 2019 | 16 ha | 6 ha | 22 ha |
| 2020 | 42 ha | 32 ha | 74 ha |
| 2021 | 19 ha | 38 ha | 57 ha |
| 2022 | 27 ha | 28 ha | 55 ha |
| 2023 | 47 ha | 17 ha | 64 ha |
| 2024 | 29 ha | 22 ha | 51 ha |
| 2025 | 39 ha | 21 ha | 60 ha |
Forest loss has stayed about the same: about 58 hectares a year in 2021–2025, against 74 hectares a year in 2016–2020. The worst year was 2018, when about 147 hectares of forest were lost, mostly to wildfires.
What is causing deforestation in Hong Kong?
- Towns and roadscleared for good42% · 384 ha
- Wildfirescan grow back35% · 322 ha
- Loggingcan grow back5.8% · 53 ha
Also: mining and energy, storms, floods and other natural causes, farms, pasture and plantations, shifting farming, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. How it's measured
Build your own
Compare Hong Kong with another country
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Hong Kong
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Frequently asked
Air quality in Hong Kong: your questions answered
What is the air quality in Hong Kong today?
Right now the 7 cities Airleaf measures in Hong Kong average AQI 72 (moderate). The worst air is in Tin Shui Wai, at AQI 87, and the cleanest in Hong Kong, at AQI 66. At ground stations alone, which measure rather than estimate, the average is AQI 72 across 7 cities. None of the 7 measured cities is over AQI 100 today.
Which city in Hong Kong has the worst air right now?
Tin Shui Wai, at AQI 87 (Moderate) on the US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
Which city in Hong Kong has the cleanest air right now?
Hong Kong, at AQI 66 (Moderate). Both lists rank current readings, from ground stations wherever Hong Kong has at least three cities with one.
Is the air in Hong Kong safe to breathe today?
It depends on the city. 7 cities are Moderate. At the national average of AQI 72: Unusually sensitive people should consider limiting long outdoor exertion.
How much forest has Hong Kong lost since 2001?
About 913 ha from 2001 to 2025, 2% of the forest it had in 2000, from the University of Maryland's yearly satellite maps of forest loss. 443 ha of it was cleared for good, for farms, mines or towns.
How does Airleaf measure air quality in Hong Kong?
Each city's reading is the US EPA air quality index, from ground monitoring stations where one has reported recently nearby, and from the CAMS atmospheric model elsewhere; each city's report says which. Hong Kong's AQHI is a different scale, explained on this page. Tree cover is measured over the same 2 km radius in every city, so the cities compare like for like.
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