Ha Noi UBND TT Lien Quan Thach That, Son Tay, Ha Noi, Vietnam Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Ha Noi UBND TT Lien Quan Thach That, Son Tay, Ha Noi, Vietnam
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Ha Noi UBND TT Lien Quan Thach That, Son Tay, Ha Noi, Vietnam
5 AM2nd Aug 2025
6 PM
4 AM3rd Aug 2025
60AQI
46AQI
59AQI
52AQI
In the last 24 hours,
Ha Noi UBND TT Lien Quan Thach That's AQI reached its highest point of 60 at 6 PM during the Day, while the lowest point, 46, was recorded at 9 AM during the Day between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Ha Noi UBND TT Lien Quan Thach That, Son Tay, Ha Noi, Vietnam
28°C24/33°C
29°C25/34°C
29°C25/32°C
29°C25/34°C
31°C26/36°C
32°C27/36°C
29°C25/34°C
28°C25/32°C
28°C24/33°C
29°C25/32°C
29°C26/33°C
29°C26/33°C
29°C26/32°C
30°C26/36°C
31°C27/35°C
30°C24/36°C
27°C24/32°C
26°C25/28°C
26°C25/30°C
27°C25/31°C
27°C25/32°C
28°C25/34°C
29°C25/34°C
29°C25/34°C
30°C26/35°C
31°C27/36°C
31°C27/36°C
31°C27/36°C
27°C25/31°C
30°C25/36°C
--°C/°C
57AQI
57AQI
58AQI
58AQI
2025 Days Vs Air Quality
Ha Noi UBND TT Lien Quan Thach That, Son Tay, Ha Noi, Vietnam
2%
5
68%
145
23%
50
6%
13
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 2%
Health Risk Level:
Extreme
In 2025, 2% of 215 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
Ha Noi UBND TT Lien Quan Thach That, Son Tay, Ha Noi, Vietnam
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
162AQI
198AQI
164AQI
145AQI
144AQI
151AQI
155AQI
147AQI
152AQI
103AQI
115AQI
121AQI
144AQI
144AQI
146AQI
143AQI
148AQI
159AQI
152AQI
168AQI
148AQI
151AQI
130AQI
117AQI
108AQI
70AQI
87AQI
77AQI
106AQI
98AQI
81AQI
79AQI
69AQI
60AQI
65AQI
91AQI
113AQI
58AQI
76AQI
97AQI
138AQI
151AQI
167AQI
148AQI
146AQI
151AQI
102AQI
122AQI
90AQI
117AQI
130AQI
122AQI
132AQI
80AQI
84AQI
93AQI
86AQI
136AQI
108AQI
111AQI
92AQI
94AQI
96AQI
95AQI
76AQI
80AQI
101AQI
128AQI
142AQI
127AQI
111AQI
95AQI
97AQI
89AQI
73AQI
89AQI
88AQI
84AQI
99AQI
117AQI
118AQI
121AQI
126AQI
131AQI
114AQI
112AQI
112AQI
82AQI
67AQI
75AQI
94AQI
120AQI
110AQI
133AQI
106AQI
123AQI
111AQI
114AQI
93AQI
98AQI
97AQI
102AQI
83AQI
93AQI
98AQI
100AQI
98AQI
100AQI
95AQI
81AQI
82AQI
91AQI
93AQI
83AQI
77AQI
77AQI
69AQI
66AQI
73AQI
73AQI
60AQI
74AQI
75AQI
74AQI
77AQI
73AQI
75AQI
75AQI
78AQI
79AQI
53AQI
67AQI
67AQI
65AQI
60AQI
59AQI
56AQI
55AQI
57AQI
58AQI
56AQI
56AQI
56AQI
54AQI
55AQI
60AQI
83AQI
81AQI
64AQI
63AQI
59AQI
54AQI
54AQI
55AQI
58AQI
64AQI
59AQI
58AQI
58AQI
62AQI
57AQI
62AQI
61AQI
56AQI
64AQI
69AQI
67AQI
62AQI
54AQI
61AQI
66AQI
55AQI
54AQI
59AQI
62AQI
58AQI
57AQI
58AQI
53AQI
53AQI
53AQI
47AQI
47AQI
53AQI
58AQI
60AQI
58AQI
61AQI
58AQI
61AQI
54AQI
54AQI
53AQI
54AQI
61AQI
67AQI
58AQI
57AQI
58AQI
63AQI
58AQI
57AQI
48AQI
49AQI
49AQI
55AQI
55AQI
57AQI
63AQI
67AQI
66AQI
59AQI
53AQI
133AQI
108AQI
101AQI
94AQI
65AQI
59AQI
57AQI
53AQI
No. of days
202588AQI
Highest AQI recorded in
January133AQI
Lowest AQI recorded in
August53AQI
202471AQI
Highest AQI recorded in
December115AQI
Lowest AQI recorded in
April2AQI
202334AQI
Highest AQI recorded in
November43AQI
Lowest AQI recorded in
December33AQI
20219AQI
Highest AQI recorded in
July9AQI
Lowest AQI recorded in
May7AQI
Most & Least Polluted Years Over the Last 4 Years
Ha Noi UBND TT Lien Quan Thach That's annual 2025 AQI (88) shows an average percentage change of 360.9% (worsened AQI) compared to previous years: 2021 (9), 2023 (34), 2024 (71).