deiG Hong Kong Air Quality Indices

2026-05-29 23:04 🔄

Urban core 港九市區	Whole territories 全境
50 Good	51 Fair

	Location		AQI	Level	Dom.
HK	Central/Western	中西區	42	Good	PM₂₅
	PM₂₅ NO₂ PM₁₀ O₃ SO₂ μg/m³ 11.3 45.5 20.3 42.9 4.4 iAQI 47 23 19 18 2
	Eastern	東區	59	Fair	PM₂₅
	PM₂₅ O₃ PM₁₀ NO₂ SO₂ μg/m³ 15.5 129.6 22.7 30.6 1.8 iAQI 57 54 21 16 1
	Southern	南區	28	Good	PM₂₅
	PM₂₅ O₃ PM₁₀ NO₂ SO₂ μg/m³ 7.5 43.8 13.0 18.6 3.9 iAQI 31 18 12 9 2
Kln	Sham Shui Po	深水埗	42	Good	PM₂₅
	PM₂₅ O₃ NO₂ PM₁₀ SO₂ μg/m³ 10.7 72.5 40.6 16.7 7.9 iAQI 45 30 21 15 4
	Kwun Tong	觀塘	59	Fair	PM₂₅
	PM₂₅ O₃ PM₁₀ NO₂ SO₂ μg/m³ 17.3 120.9 23.3 30.2 4.2 iAQI 61 50 22 15 2
New Territories	Tung Chung	東涌	46	Good	PM₂₅
	PM₂₅ O₃ NO₂ PM₁₀ SO₂ μg/m³ 12.5 60.4 37.2 19.5 2.7 iAQI 51 25 19 18 1
	Tuen Mun	屯門	56	Fair	PM₂₅
	PM₂₅ O₃ PM₁₀ NO₂ SO₂ μg/m³ 17.2 94.8 24.5 36.5 5.2 iAQI 61 40 23 19 3
	Yuen Long	元朗	53	Fair	PM₂₅
	PM₂₅ O₃ PM₁₀ NO₂ SO₂ μg/m³ 14.6 100.9 24.9 33.5 0.9 iAQI 56 42 23 17 0
	Tsuen Wan	荃灣	45	Good	PM₂₅
	PM₂₅ NO₂ O₃ PM₁₀ SO₂ μg/m³ 12.3 46.5 52.1 15.7 6.3 iAQI 51 24 22 15 3
	Kwai Chung	葵涌	47	Good	PM₂₅
	PM₂₅ O₃ NO₂ PM₁₀ SO₂ μg/m³ 13.0 64.6 49.7 18.6 5.4 iAQI 52 27 25 17 3
	North	北區	70	Fair	PM₂₅
	PM₂₅ O₃ PM₁₀ NO₂ SO₂ μg/m³ 23.5 125.9 30.3 28.5 2.5 iAQI 75 53 28 15 1
	Tai Po	大埔	62	Fair	PM₂₅
	PM₂₅ O₃ PM₁₀ NO₂ SO₂ μg/m³ 19.2 118.9 27.3 30.7 3.2 iAQI 65 50 25 16 2
	Sha Tin	沙田	51	Fair	O₃
	O₃ PM₂₅ PM₁₀ NO₂ SO₂ μg/m³ 136.9 4.7 19.3 18.6 3.1 iAQI 57 20 18 9 2
	Tseung Kwan O	將軍澳	54	Fair	PM₂₅
	PM₂₅ O₃ PM₁₀ NO₂ SO₂ μg/m³ 14.6 110.4 19.8 10.1 5.6 iAQI 56 46 18 5 3
rural	Tap Mun	塔門	41	Good	O₃
	O₃ PM₂₅ PM₁₀ NO₂ SO₂ μg/m³ 108.1 5.8 10.1 9.0 1.5 iAQI 45 24 9 5 1
roadside	Central	中環	78	Poor	PM₂₅
	PM₂₅ PM₁₀ NO₂ O₃ SO₂ μg/m³ 29.0 45.6 74.8 12.5 5.8 iAQI 86 42 38 5 3
	Causeway Bay	銅鑼灣	93	Poor	PM₂₅
	PM₂₅ NO₂ PM₁₀ SO₂ O₃ μg/m³ 37.1 94.0 45.6 7.1 8.3 iAQI 104 48 42 4 3
	Mong Kok	旺角	46	Good	PM₂₅
	PM₂₅ NO₂ O₃ PM₁₀ SO₂ μg/m³ 10.8 81.6 40.8 17.3 7.6 iAQI 45 42 17 16 4

History & Stats

Locations of Stations

Based on:

• Raw pollutant readings taken from the Environmental Protection Department's Air Quality Monitoring Network;
• The United States Environmental Protection Agency's standard, for individual pollutant scaling;
• deiG's proprietary algorithm derived from the University of Hong Kong's Hedley Environmental Index, for AQI calculation;
• Weather data from Hong Kong Observatory.

Contact: aqi@asc.hk

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