Haiphong, Hai Phong, 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
Haiphong, Hai Phong, Vietnam
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 56 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Haiphong, Hai Phong, Vietnam
5 AM4th Aug 2025
6 PM
4 AM5th Aug 2025
AQI
AQI
61AQI
52AQI
In the last 24 hours,
Haiphong's AQI reached its highest point of 61 at 1 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Haiphong, Hai Phong, Vietnam
30°C26/34°C
29°C26/33°C
30°C27/35°C
31°C28/35°C
30°C25/34°C
29°C26/32°C
29°C26/32°C
29°C26/32°C
29°C27/33°C
30°C27/33°C
30°C27/33°C
30°C27/34°C
31°C27/36°C
29°C25/37°C
26°C24/28°C
25°C25/26°C
26°C26/28°C
28°C26/31°C
27°C26/30°C
28°C25/31°C
29°C25/34°C
29°C26/34°C
30°C26/34°C
30°C27/34°C
31°C28/35°C
31°C28/36°C
28°C27/31°C
30°C26/35°C
31°C28/35°C
--°C/°C
--°C/°C
53AQI
50AQI
53AQI
53AQI
2025 Days Vs Air Quality
Haiphong, Hai Phong, Vietnam
13%
28
72%
154
14%
30
1%
3
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 13%
Health Risk Level:
Extreme
In 2025, 13% of 216 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
Haiphong, Hai Phong, Vietnam
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
132AQI
125AQI
109AQI
120AQI
128AQI
137AQI
125AQI
121AQI
129AQI
92AQI
102AQI
103AQI
119AQI
131AQI
132AQI
133AQI
143AQI
153AQI
155AQI
170AQI
136AQI
129AQI
111AQI
105AQI
87AQI
62AQI
78AQI
74AQI
112AQI
85AQI
85AQI
78AQI
66AQI
56AQI
64AQI
93AQI
79AQI
55AQI
63AQI
82AQI
128AQI
131AQI
139AQI
123AQI
117AQI
122AQI
79AQI
100AQI
67AQI
83AQI
77AQI
90AQI
93AQI
64AQI
71AQI
88AQI
72AQI
113AQI
71AQI
90AQI
73AQI
75AQI
73AQI
75AQI
60AQI
67AQI
85AQI
99AQI
115AQI
84AQI
81AQI
70AQI
66AQI
63AQI
56AQI
75AQI
69AQI
74AQI
75AQI
69AQI
69AQI
62AQI
65AQI
74AQI
73AQI
77AQI
74AQI
55AQI
44AQI
48AQI
56AQI
65AQI
72AQI
116AQI
80AQI
84AQI
78AQI
81AQI
74AQI
76AQI
75AQI
78AQI
76AQI
80AQI
83AQI
84AQI
79AQI
79AQI
76AQI
69AQI
67AQI
70AQI
68AQI
66AQI
61AQI
62AQI
59AQI
58AQI
70AQI
64AQI
59AQI
64AQI
63AQI
66AQI
68AQI
65AQI
66AQI
65AQI
66AQI
67AQI
57AQI
63AQI
60AQI
61AQI
58AQI
58AQI
53AQI
55AQI
54AQI
54AQI
53AQI
52AQI
50AQI
50AQI
52AQI
57AQI
64AQI
62AQI
52AQI
52AQI
50AQI
48AQI
49AQI
49AQI
51AQI
55AQI
50AQI
50AQI
51AQI
52AQI
51AQI
53AQI
50AQI
48AQI
52AQI
55AQI
56AQI
55AQI
55AQI
59AQI
60AQI
56AQI
59AQI
56AQI
56AQI
52AQI
51AQI
49AQI
48AQI
44AQI
48AQI
40AQI
37AQI
41AQI
55AQI
56AQI
55AQI
55AQI
53AQI
56AQI
50AQI
51AQI
51AQI
55AQI
61AQI
58AQI
53AQI
51AQI
53AQI
59AQI
53AQI
48AQI
41AQI
40AQI
39AQI
45AQI
49AQI
49AQI
48AQI
59AQI
56AQI
54AQI
53AQI
53AQI
56AQI
117AQI
88AQI
72AQI
74AQI
59AQI
52AQI
51AQI
54AQI
No. of days
202573AQI
Highest AQI recorded in
January117AQI
Lowest AQI recorded in
July51AQI
202441AQI
Highest AQI recorded in
December94AQI
Lowest AQI recorded in
February17AQI
202331AQI
Highest AQI recorded in
September47AQI
Lowest AQI recorded in
July15AQI
202224AQI
Highest AQI recorded in
August36AQI
Lowest AQI recorded in
March18AQI
202122AQI
Highest AQI recorded in
November34AQI
Lowest AQI recorded in
May5AQI
202030AQI
Highest AQI recorded in
November56AQI
Lowest AQI recorded in
March17AQI
Most & Least Polluted Years Over the Last 6 Years
Haiphong's annual 2025 AQI (73) shows an average percentage change of 159.1% (worsened AQI) compared to previous years: 2020 (30), 2021 (22), 2022 (24), 2023 (31), 2024 (41).