Chaloem Phra Kiat, Nan, Laos 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
Chaloem Phra Kiat, Nan, Laos
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 38 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 22nd Sep - 23rd Sep 2025
Chaloem Phra Kiat, Nan, Laos
6 AM22nd Sep 2025
6 PM
5 AM23rd Sep 2025
AQI
AQI
40AQI
21AQI
In the last 24 hours,
Chaloem Phra Kiat's AQI reached its highest point of 40 at 1 AM during the Night, while the lowest point, 21, was recorded at 5 PM during the Night between 22nd Sep and 23rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Chaloem Phra Kiat, Nan, Laos
21°C19/28°C
22°C18/27°C
19°C17/21°C
18°C17/18°C
19°C17/21°C
20°C17/24°C
21°C18/24°C
21°C19/25°C
23°C20/27°C
22°C20/28°C
22°C20/25°C
21°C18/27°C
21°C17/27°C
21°C17/25°C
21°C18/25°C
21°C19/26°C
21°C18/27°C
19°C16/21°C
20°C18/23°C
20°C17/24°C
20°C17/24°C
21°C18/26°C
22°C17/28°C
20°C18/25°C
21°C18/25°C
21°C18/26°C
21°C18/25°C
21°C19/25°C
21°C19/24°C
--°C/°C
--°C/°C
50AQI
39AQI
50AQI
48AQI
2025 Days Vs Air Quality
Chaloem Phra Kiat, Nan, Laos
31%
82
36%
95
30%
80
3%
7
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 31%
Health Risk Level:
High
In 2025, 31% of 265 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Chaloem Phra Kiat, Nan, Laos
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
101AQI
95AQI
95AQI
101AQI
102AQI
112AQI
109AQI
110AQI
106AQI
112AQI
106AQI
103AQI
104AQI
101AQI
108AQI
117AQI
115AQI
111AQI
101AQI
100AQI
105AQI
105AQI
102AQI
102AQI
107AQI
109AQI
86AQI
100AQI
109AQI
111AQI
117AQI
113AQI
116AQI
111AQI
115AQI
107AQI
123AQI
114AQI
108AQI
93AQI
102AQI
98AQI
103AQI
111AQI
115AQI
108AQI
122AQI
117AQI
115AQI
109AQI
110AQI
106AQI
104AQI
100AQI
80AQI
76AQI
71AQI
77AQI
83AQI
85AQI
89AQI
99AQI
119AQI
128AQI
130AQI
124AQI
113AQI
97AQI
92AQI
108AQI
114AQI
116AQI
116AQI
133AQI
123AQI
129AQI
98AQI
88AQI
98AQI
111AQI
115AQI
145AQI
136AQI
149AQI
146AQI
154AQI
160AQI
160AQI
161AQI
156AQI
152AQI
148AQI
148AQI
154AQI
149AQI
139AQI
108AQI
108AQI
133AQI
127AQI
126AQI
102AQI
100AQI
75AQI
75AQI
73AQI
72AQI
72AQI
71AQI
72AQI
69AQI
79AQI
87AQI
95AQI
103AQI
108AQI
112AQI
92AQI
87AQI
85AQI
84AQI
81AQI
78AQI
82AQI
82AQI
87AQI
104AQI
102AQI
97AQI
101AQI
92AQI
81AQI
83AQI
77AQI
71AQI
67AQI
71AQI
69AQI
65AQI
61AQI
62AQI
68AQI
67AQI
63AQI
63AQI
63AQI
61AQI
58AQI
60AQI
58AQI
59AQI
63AQI
63AQI
65AQI
73AQI
76AQI
71AQI
73AQI
68AQI
66AQI
64AQI
55AQI
57AQI
61AQI
61AQI
54AQI
45AQI
46AQI
40AQI
36AQI
44AQI
45AQI
47AQI
45AQI
46AQI
46AQI
49AQI
44AQI
42AQI
42AQI
47AQI
48AQI
47AQI
46AQI
42AQI
41AQI
44AQI
41AQI
45AQI
47AQI
51AQI
50AQI
51AQI
49AQI
48AQI
47AQI
43AQI
42AQI
42AQI
44AQI
46AQI
46AQI
49AQI
47AQI
41AQI
40AQI
44AQI
40AQI
41AQI
41AQI
42AQI
51AQI
54AQI
54AQI
54AQI
53AQI
55AQI
51AQI
50AQI
46AQI
47AQI
46AQI
45AQI
46AQI
49AQI
47AQI
47AQI
44AQI
44AQI
47AQI
48AQI
48AQI
50AQI
47AQI
47AQI
46AQI
47AQI
46AQI
43AQI
42AQI
45AQI
47AQI
50AQI
48AQI
50AQI
51AQI
53AQI
52AQI
51AQI
53AQI
54AQI
53AQI
49AQI
46AQI
48AQI
49AQI
48AQI
48AQI
49AQI
50AQI
49AQI
47AQI
43AQI
38AQI
105AQI
104AQI
122AQI
104AQI
75AQI
54AQI
45AQI
48AQI
49AQI
No. of days
202579AQI
Highest AQI recorded in
March122AQI
Lowest AQI recorded in
July45AQI
202463AQI
Highest AQI recorded in
March110AQI
Lowest AQI recorded in
July41AQI
202388AQI
Highest AQI recorded in
March173AQI
Lowest AQI recorded in
July36AQI
2022106AQI
Highest AQI recorded in
October139AQI
Lowest AQI recorded in
November100AQI
Most & Least Polluted Years Over the Last 4 Years
Chaloem Phra Kiat's annual 2025 AQI (79) shows an average percentage change of -2.8% (improved AQI) compared to previous years: 2022 (106), 2023 (88), 2024 (63).