Tsuen Wan, Hong Kong, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
Tsuen Wan, Hong Kong, China
AQI Trends: Highest and Lowest
Same Day Analysis (4th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 22 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Mar - 4th Mar 2026
Tsuen Wan, Hong Kong, China
6 AM3rd Mar 2026
6 PM
5 AM4th Mar 2026
52AQI
22AQI
50AQI
12AQI
In the last 24 hours,
Tsuen Wan's AQI reached its highest point of 52 at 6 PM during the Day, while the lowest point, 12, was recorded at 4 AM during the Night between 3rd Mar and 4th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Tsuen Wan, Hong Kong, China
17°C16/18°C
18°C17/19°C
20°C18/21°C
21°C19/23°C
19°C18/20°C
16°C14/18°C
16°C15/16°C
18°C16/20°C
20°C17/22°C
18°C18/19°C
19°C18/21°C
20°C18/22°C
21°C20/23°C
22°C20/23°C
19°C18/20°C
19°C18/20°C
18°C17/19°C
20°C18/22°C
20°C19/21°C
21°C19/23°C
20°C20/21°C
21°C20/22°C
21°C20/23°C
20°C20/21°C
22°C20/23°C
20°C19/21°C
20°C19/21°C
22°C21/25°C
19°C18/21°C
18°C17/19°C
67AQI
48AQI
66AQI
53AQI
2026 Days Vs Air Quality
Tsuen Wan, Hong Kong, China
16%
10
81%
51
3%
2
Total number of days with different AQI categories in last 64 days in 2026 (301 days remaining)
Under WHO’s Safe Air Quality Limits: 16%
Health Risk Level:
Extreme
In 2026, 16% of 64 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.
Annual Air Quality Insights
Tsuen Wan, Hong Kong, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
67AQI (US)
61AQI (US)
53AQI (US)
72AQI (US)
76AQI (US)
68AQI (US)
80AQI (US)
62AQI (US)
66AQI (US)
77AQI (US)
59AQI (US)
85AQI (US)
124AQI (US)
72AQI (US)
79AQI (US)
77AQI (US)
73AQI (US)
72AQI (US)
85AQI (US)
53AQI (US)
86AQI (US)
78AQI (US)
89AQI (US)
118AQI (US)
63AQI (US)
41AQI (US)
80AQI (US)
88AQI (US)
73AQI (US)
53AQI (US)
53AQI (US)
50AQI (US)
63AQI (US)
69AQI (US)
83AQI (US)
72AQI (US)
54AQI (US)
65AQI (US)
50AQI (US)
61AQI (US)
58AQI (US)
51AQI (US)
67AQI (US)
75AQI (US)
58AQI (US)
33AQI (US)
42AQI (US)
66AQI (US)
63AQI (US)
69AQI (US)
90AQI (US)
86AQI (US)
70AQI (US)
81AQI (US)
69AQI (US)
65AQI (US)
36AQI (US)
57AQI (US)
36AQI (US)
30AQI (US)
66AQI (US)
38AQI (US)
22AQI (US)
74AQI (US)
62AQI (US)
39AQI (US)
No. of days
202666AQI (US)
Highest AQI (US) recorded in
January74AQI (US)
Lowest AQI (US) recorded in
March39AQI (US)
202562AQI (US)
Highest AQI (US) recorded in
January84AQI (US)
Lowest AQI (US) recorded in
June41AQI (US)
202458AQI (US)
Highest AQI (US) recorded in
December90AQI (US)
Lowest AQI (US) recorded in
July30AQI (US)
202358AQI (US)
Highest AQI (US) recorded in
December75AQI (US)
Lowest AQI (US) recorded in
July41AQI (US)
202257AQI (US)
Highest AQI (US) recorded in
August112AQI (US)
Lowest AQI (US) recorded in
July33AQI (US)
202158AQI (US)
Highest AQI (US) recorded in
January86AQI (US)
Lowest AQI (US) recorded in
July40AQI (US)
202051AQI (US)
Highest AQI (US) recorded in
December84AQI (US)
Lowest AQI (US) recorded in
July24AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Tsuen Wan's annual 2026 AQI (US) (66) shows an average percentage change of 15.7% (worsened AQI (US)) compared to previous years: 2020 (51), 2021 (58), 2022 (57), 2023 (58), 2024 (58), 2025 (62).