Dam Trau phuong Bach Dang, Hanoi, Ha Noi, Vietnam Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Dam Trau phuong Bach Dang, Hanoi, Ha Noi, Vietnam
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 69 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Sep - 22nd Sep 2025
Dam Trau phuong Bach Dang, Hanoi, Ha Noi, Vietnam
5 AM21st Sep 2025
6 PM
4 AM22nd Sep 2025
94AQI
60AQI
67AQI
56AQI
In the last 24 hours,
Dam Trau phuong Bach Dang's AQI reached its highest point of 94 at 10 AM during the Day, while the lowest point, 56, was recorded at 2 AM during the Night between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Dam Trau phuong Bach Dang, Hanoi, Ha Noi, Vietnam
28°C25/33°C
29°C25/34°C
25°C24/29°C
24°C23/25°C
25°C24/28°C
27°C23/32°C
27°C24/32°C
27°C24/31°C
27°C24/30°C
27°C25/31°C
28°C25/33°C
29°C25/34°C
29°C25/34°C
29°C25/33°C
29°C26/35°C
30°C26/35°C
30°C26/36°C
28°C26/32°C
28°C25/31°C
28°C25/33°C
28°C25/32°C
28°C25/33°C
28°C25/33°C
28°C25/31°C
28°C24/33°C
27°C25/31°C
27°C25/30°C
28°C25/33°C
29°C25/35°C
29°C26/35°C
--°C/°C
48AQI
41AQI
49AQI
48AQI
2025 Days Vs Air Quality
Dam Trau phuong Bach Dang, Hanoi, Ha Noi, Vietnam
14%
37
61%
162
21%
56
3%
9
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 14%
Health Risk Level:
Extreme
In 2025, 14% of 265 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
Dam Trau phuong Bach Dang, Hanoi, Ha Noi, Vietnam
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
148AQI
192AQI
148AQI
107AQI
113AQI
119AQI
136AQI
128AQI
146AQI
101AQI
108AQI
123AQI
143AQI
148AQI
151AQI
148AQI
154AQI
169AQI
165AQI
181AQI
166AQI
163AQI
140AQI
139AQI
108AQI
75AQI
92AQI
83AQI
122AQI
112AQI
94AQI
83AQI
68AQI
59AQI
71AQI
100AQI
103AQI
56AQI
68AQI
88AQI
139AQI
149AQI
162AQI
138AQI
138AQI
141AQI
78AQI
113AQI
67AQI
91AQI
135AQI
112AQI
137AQI
69AQI
78AQI
95AQI
86AQI
140AQI
105AQI
110AQI
84AQI
91AQI
89AQI
92AQI
62AQI
72AQI
93AQI
130AQI
139AQI
120AQI
90AQI
79AQI
83AQI
80AQI
57AQI
79AQI
80AQI
80AQI
88AQI
122AQI
121AQI
127AQI
132AQI
134AQI
108AQI
104AQI
107AQI
85AQI
67AQI
75AQI
100AQI
132AQI
115AQI
143AQI
120AQI
135AQI
124AQI
120AQI
96AQI
99AQI
99AQI
107AQI
92AQI
100AQI
106AQI
109AQI
101AQI
106AQI
99AQI
88AQI
87AQI
97AQI
101AQI
90AQI
84AQI
84AQI
72AQI
68AQI
80AQI
76AQI
65AQI
87AQI
82AQI
79AQI
82AQI
77AQI
79AQI
81AQI
82AQI
83AQI
56AQI
72AQI
69AQI
67AQI
61AQI
61AQI
57AQI
56AQI
59AQI
59AQI
58AQI
57AQI
55AQI
55AQI
56AQI
60AQI
82AQI
78AQI
61AQI
59AQI
59AQI
53AQI
54AQI
54AQI
61AQI
73AQI
61AQI
60AQI
60AQI
66AQI
59AQI
64AQI
63AQI
54AQI
64AQI
67AQI
66AQI
65AQI
59AQI
66AQI
67AQI
62AQI
63AQI
64AQI
63AQI
55AQI
57AQI
62AQI
55AQI
55AQI
54AQI
46AQI
48AQI
57AQI
61AQI
63AQI
58AQI
66AQI
64AQI
69AQI
56AQI
56AQI
55AQI
57AQI
72AQI
87AQI
60AQI
60AQI
62AQI
77AQI
61AQI
57AQI
40AQI
47AQI
45AQI
60AQI
63AQI
60AQI
67AQI
77AQI
72AQI
62AQI
54AQI
55AQI
57AQI
56AQI
55AQI
53AQI
58AQI
56AQI
55AQI
55AQI
54AQI
50AQI
52AQI
54AQI
44AQI
42AQI
39AQI
40AQI
42AQI
45AQI
48AQI
45AQI
47AQI
46AQI
37AQI
34AQI
41AQI
45AQI
46AQI
41AQI
41AQI
43AQI
42AQI
41AQI
47AQI
42AQI
42AQI
52AQI
56AQI
46AQI
51AQI
44AQI
42AQI
40AQI
41AQI
44AQI
49AQI
50AQI
51AQI
53AQI
61AQI
69AQI
133AQI
102AQI
96AQI
101AQI
68AQI
61AQI
61AQI
48AQI
48AQI
No. of days
202581AQI
Highest AQI recorded in
January133AQI
Lowest AQI recorded in
September48AQI
202468AQI
Highest AQI recorded in
December100AQI
Lowest AQI recorded in
January33AQI
202353AQI
Highest AQI recorded in
December54AQI
Lowest AQI recorded in
November48AQI
20217AQI
Highest AQI recorded in
April10AQI
Lowest AQI recorded in
May4AQI
Most & Least Polluted Years Over the Last 4 Years
Dam Trau phuong Bach Dang's annual 2025 AQI (81) shows an average percentage change of 374.4% (worsened AQI) compared to previous years: 2021 (7), 2023 (53), 2024 (68).