Vientiane, Hadxayfong District, Laos 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
Vientiane, Hadxayfong District, Laos
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 59 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
Vientiane, Hadxayfong District, Laos
5 AM4th Aug 2025
6 PM
4 AM5th Aug 2025
AQI
AQI
61AQI
48AQI
In the last 24 hours,
Vientiane's AQI reached its highest point of 61 at 10 AM 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
Vientiane, Hadxayfong District, Laos
25°C23/26°C
26°C23/30°C
26°C24/29°C
27°C23/32°C
27°C24/30°C
24°C23/26°C
25°C23/28°C
27°C24/32°C
27°C24/31°C
27°C25/30°C
25°C24/28°C
26°C24/30°C
27°C23/32°C
27°C24/32°C
27°C24/31°C
26°C24/29°C
24°C23/24°C
24°C23/26°C
25°C23/27°C
25°C23/27°C
25°C23/27°C
24°C23/27°C
25°C23/28°C
27°C24/32°C
25°C24/26°C
27°C24/30°C
27°C24/32°C
28°C24/33°C
28°C24/33°C
--°C/°C
--°C/°C
53AQI
45AQI
52AQI
50AQI
2025 Days Vs Air Quality
Vientiane, Hadxayfong District, Laos
18%
38
59%
126
20%
44
3%
7
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 18%
Health Risk Level:
Extreme
In 2025, 18% 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
Vientiane, Hadxayfong District, Laos
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
90AQI
96AQI
99AQI
120AQI
119AQI
132AQI
133AQI
125AQI
118AQI
89AQI
92AQI
99AQI
112AQI
125AQI
103AQI
89AQI
111AQI
122AQI
118AQI
128AQI
128AQI
137AQI
140AQI
147AQI
149AQI
108AQI
79AQI
88AQI
100AQI
106AQI
122AQI
126AQI
131AQI
118AQI
84AQI
90AQI
106AQI
98AQI
73AQI
75AQI
79AQI
87AQI
109AQI
96AQI
97AQI
100AQI
122AQI
99AQI
93AQI
87AQI
94AQI
86AQI
82AQI
67AQI
62AQI
59AQI
54AQI
65AQI
82AQI
83AQI
91AQI
100AQI
118AQI
117AQI
115AQI
78AQI
75AQI
84AQI
70AQI
83AQI
100AQI
79AQI
87AQI
102AQI
87AQI
80AQI
83AQI
106AQI
110AQI
132AQI
140AQI
153AQI
159AQI
165AQI
163AQI
159AQI
157AQI
157AQI
121AQI
114AQI
103AQI
125AQI
131AQI
137AQI
137AQI
109AQI
104AQI
97AQI
96AQI
85AQI
90AQI
75AQI
66AQI
76AQI
71AQI
75AQI
66AQI
65AQI
65AQI
67AQI
70AQI
79AQI
82AQI
88AQI
92AQI
90AQI
78AQI
82AQI
75AQI
79AQI
80AQI
79AQI
73AQI
86AQI
93AQI
81AQI
86AQI
75AQI
70AQI
66AQI
55AQI
50AQI
67AQI
62AQI
52AQI
52AQI
56AQI
52AQI
54AQI
54AQI
58AQI
55AQI
58AQI
49AQI
46AQI
40AQI
45AQI
49AQI
47AQI
47AQI
49AQI
46AQI
45AQI
50AQI
62AQI
58AQI
63AQI
68AQI
64AQI
63AQI
60AQI
53AQI
48AQI
53AQI
48AQI
42AQI
41AQI
47AQI
51AQI
48AQI
48AQI
49AQI
51AQI
48AQI
49AQI
52AQI
53AQI
51AQI
48AQI
49AQI
51AQI
53AQI
50AQI
53AQI
53AQI
53AQI
49AQI
51AQI
53AQI
55AQI
56AQI
54AQI
54AQI
54AQI
56AQI
56AQI
52AQI
53AQI
48AQI
46AQI
47AQI
49AQI
43AQI
39AQI
44AQI
49AQI
51AQI
47AQI
46AQI
45AQI
47AQI
54AQI
58AQI
56AQI
59AQI
114AQI
90AQI
112AQI
89AQI
61AQI
52AQI
50AQI
58AQI
No. of days
202581AQI
Highest AQI recorded in
January114AQI
Lowest AQI recorded in
July50AQI
202465AQI
Highest AQI recorded in
April169AQI
Lowest AQI recorded in
September41AQI
202327AQI
Highest AQI recorded in
November130AQI
Lowest AQI recorded in
July2AQI
202273AQI
Highest AQI recorded in
October136AQI
Lowest AQI recorded in
December21AQI
Most & Least Polluted Years Over the Last 4 Years
Vientiane's annual 2025 AQI (81) shows an average percentage change of 76.3% (worsened AQI) compared to previous years: 2022 (73), 2023 (27), 2024 (65).