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!
August Air Quality Analysis
Hanoi, Ha Noi, Vietnam
AQI Trends: Highest and Lowest
Same Day Analysis (6th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 62 of Moderate air quality on the same day.
Day & Night AQI Trend: 5th Aug - 6th Aug 2026
Hanoi, Ha Noi, Vietnam
5 AM5th Aug 2026
6 PM
4 AM6th Aug 2026
58AQI
45AQI
70AQI
54AQI
In the last 24 hours,
Hanoi's AQI reached its highest point of 70 at 12 AM during the Night, while the lowest point, 45, was recorded at 9 AM during the Day between 5th Aug and 6th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Hanoi, Ha Noi, Vietnam
30°C26/35°C
29°C27/34°C
29°C26/34°C
30°C27/35°C
30°C27/34°C
31°C27/35°C
31°C27/36°C
31°C28/34°C
31°C28/35°C
29°C28/31°C
31°C27/36°C
30°C28/34°C
29°C26/34°C
28°C26/33°C
30°C26/36°C
30°C27/36°C
29°C26/33°C
30°C26/34°C
31°C26/36°C
30°C27/34°C
26°C25/29°C
28°C25/32°C
28°C25/33°C
28°C26/31°C
28°C25/32°C
29°C26/33°C
29°C26/34°C
29°C26/33°C
27°C26/30°C
28°C25/32°C
68AQI
57AQI
64AQI
59AQI
2026 Days Vs Air Quality
Hanoi, Ha Noi, Vietnam
10%
22
64%
137
18%
39
8%
17
Total number of days with different AQI categories in last 218 days in 2026 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 10%
Health Risk Level:
Extreme
In 2026, 10% of 218 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
Hanoi, Ha Noi, Vietnam
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
128AQI (US)
72AQI (US)
121AQI (US)
156AQI (US)
111AQI (US)
72AQI (US)
124AQI (US)
145AQI (US)
182AQI (US)
169AQI (US)
170AQI (US)
162AQI (US)
186AQI (US)
171AQI (US)
169AQI (US)
156AQI (US)
133AQI (US)
133AQI (US)
139AQI (US)
112AQI (US)
98AQI (US)
63AQI (US)
75AQI (US)
104AQI (US)
143AQI (US)
157AQI (US)
163AQI (US)
153AQI (US)
141AQI (US)
103AQI (US)
98AQI (US)
92AQI (US)
125AQI (US)
155AQI (US)
160AQI (US)
157AQI (US)
153AQI (US)
84AQI (US)
87AQI (US)
46AQI (US)
96AQI (US)
91AQI (US)
99AQI (US)
89AQI (US)
81AQI (US)
91AQI (US)
76AQI (US)
124AQI (US)
108AQI (US)
104AQI (US)
76AQI (US)
99AQI (US)
59AQI (US)
69AQI (US)
76AQI (US)
87AQI (US)
95AQI (US)
96AQI (US)
80AQI (US)
83AQI (US)
74AQI (US)
57AQI (US)
66AQI (US)
105AQI (US)
137AQI (US)
109AQI (US)
77AQI (US)
66AQI (US)
30AQI (US)
76AQI (US)
123AQI (US)
119AQI (US)
85AQI (US)
80AQI (US)
67AQI (US)
65AQI (US)
71AQI (US)
70AQI (US)
62AQI (US)
80AQI (US)
78AQI (US)
67AQI (US)
72AQI (US)
67AQI (US)
89AQI (US)
75AQI (US)
81AQI (US)
82AQI (US)
105AQI (US)
102AQI (US)
76AQI (US)
103AQI (US)
129AQI (US)
102AQI (US)
114AQI (US)
151AQI (US)
146AQI (US)
110AQI (US)
111AQI (US)
113AQI (US)
137AQI (US)
138AQI (US)
120AQI (US)
106AQI (US)
88AQI (US)
74AQI (US)
103AQI (US)
84AQI (US)
90AQI (US)
76AQI (US)
55AQI (US)
69AQI (US)
88AQI (US)
78AQI (US)
62AQI (US)
57AQI (US)
37AQI (US)
36AQI (US)
68AQI (US)
75AQI (US)
57AQI (US)
41AQI (US)
74AQI (US)
72AQI (US)
60AQI (US)
63AQI (US)
96AQI (US)
93AQI (US)
65AQI (US)
56AQI (US)
65AQI (US)
76AQI (US)
77AQI (US)
75AQI (US)
70AQI (US)
54AQI (US)
62AQI (US)
72AQI (US)
70AQI (US)
55AQI (US)
63AQI (US)
59AQI (US)
51AQI (US)
85AQI (US)
52AQI (US)
80AQI (US)
77AQI (US)
89AQI (US)
104AQI (US)
81AQI (US)
82AQI (US)
96AQI (US)
66AQI (US)
72AQI (US)
46AQI (US)
59AQI (US)
40AQI (US)
61AQI (US)
90AQI (US)
87AQI (US)
62AQI (US)
65AQI (US)
73AQI (US)
93AQI (US)
71AQI (US)
68AQI (US)
54AQI (US)
43AQI (US)
52AQI (US)
48AQI (US)
51AQI (US)
48AQI (US)
51AQI (US)
35AQI (US)
82AQI (US)
72AQI (US)
66AQI (US)
40AQI (US)
56AQI (US)
70AQI (US)
71AQI (US)
37AQI (US)
49AQI (US)
42AQI (US)
78AQI (US)
60AQI (US)
65AQI (US)
41AQI (US)
88AQI (US)
90AQI (US)
86AQI (US)
58AQI (US)
60AQI (US)
65AQI (US)
40AQI (US)
43AQI (US)
47AQI (US)
75AQI (US)
104AQI (US)
87AQI (US)
61AQI (US)
51AQI (US)
67AQI (US)
84AQI (US)
56AQI (US)
44AQI (US)
52AQI (US)
64AQI (US)
45AQI (US)
44AQI (US)
54AQI (US)
61AQI (US)
65AQI (US)
52AQI (US)
62AQI (US)
133AQI (US)
98AQI (US)
81AQI (US)
95AQI (US)
68AQI (US)
65AQI (US)
62AQI (US)
56AQI (US)
No. of days
202685AQI (US)
Highest AQI (US) recorded in
January133AQI (US)
Lowest AQI (US) recorded in
August56AQI (US)
202587AQI (US)
Highest AQI (US) recorded in
December146AQI (US)
Lowest AQI (US) recorded in
August48AQI (US)
202478AQI (US)
Highest AQI (US) recorded in
December102AQI (US)
Lowest AQI (US) recorded in
August37AQI (US)
202378AQI (US)
Highest AQI (US) recorded in
January108AQI (US)
Lowest AQI (US) recorded in
July53AQI (US)
202256AQI (US)
Highest AQI (US) recorded in
December91AQI (US)
Lowest AQI (US) recorded in
August22AQI (US)
202171AQI (US)
Highest AQI (US) recorded in
January135AQI (US)
Lowest AQI (US) recorded in
July41AQI (US)
202074AQI (US)
Highest AQI (US) recorded in
April119AQI (US)
Lowest AQI (US) recorded in
August49AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Hanoi's annual 2026 AQI (US) (85) shows an average percentage change of 17.003% (worsened AQI (US)) compared to previous years: 2020 (74), 2021 (71), 2022 (56), 2023 (78), 2024 (78), 2025 (87).