Chiang Dao District, Chiang Mai, Thailand 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
Chiang Dao District, Chiang Mai, Thailand
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 51 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Chiang Dao District, Chiang Mai, Thailand
6 AM17th Sep 2025
6 PM
5 AM18th Sep 2025
61AQI
34AQI
79AQI
52AQI
In the last 24 hours,
Chiang Dao District's AQI reached its highest point of 79 at 9 PM during the Night, while the lowest point, 34, was recorded at 2 PM during the Day between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Chiang Dao District, Chiang Mai, Thailand
23°C18/29°C
23°C18/30°C
24°C18/31°C
23°C18/30°C
22°C19/29°C
23°C19/29°C
24°C18/32°C
22°C18/27°C
21°C19/23°C
21°C18/26°C
23°C16/31°C
23°C18/31°C
22°C19/27°C
22°C19/27°C
23°C19/30°C
23°C19/30°C
24°C18/31°C
24°C18/33°C
24°C19/32°C
24°C18/32°C
23°C18/32°C
23°C18/31°C
23°C19/27°C
22°C19/26°C
23°C19/29°C
23°C19/30°C
23°C18/29°C
23°C18/31°C
23°C18/31°C
24°C17/33°C
--°C/°C
53AQI
43AQI
54AQI
54AQI
2025 Days Vs Air Quality
Chiang Dao District, Chiang Mai, Thailand
20%
52
56%
145
20%
53
4%
10
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 20%
Health Risk Level:
Very high
In 2025, 20% of 261 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Chiang Dao District, Chiang Mai, Thailand
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
85AQI
82AQI
78AQI
85AQI
92AQI
99AQI
98AQI
106AQI
119AQI
108AQI
94AQI
89AQI
94AQI
92AQI
93AQI
88AQI
88AQI
88AQI
88AQI
95AQI
105AQI
106AQI
110AQI
107AQI
97AQI
97AQI
93AQI
86AQI
98AQI
110AQI
97AQI
92AQI
92AQI
102AQI
111AQI
113AQI
111AQI
108AQI
111AQI
99AQI
100AQI
106AQI
103AQI
103AQI
100AQI
99AQI
122AQI
122AQI
123AQI
114AQI
112AQI
99AQI
102AQI
92AQI
81AQI
69AQI
65AQI
68AQI
73AQI
72AQI
76AQI
95AQI
109AQI
129AQI
120AQI
132AQI
111AQI
104AQI
91AQI
100AQI
102AQI
98AQI
111AQI
131AQI
127AQI
144AQI
130AQI
116AQI
105AQI
130AQI
147AQI
157AQI
160AQI
158AQI
153AQI
156AQI
162AQI
163AQI
164AQI
158AQI
152AQI
148AQI
147AQI
146AQI
144AQI
141AQI
110AQI
102AQI
125AQI
130AQI
120AQI
88AQI
75AQI
61AQI
58AQI
58AQI
57AQI
55AQI
60AQI
66AQI
74AQI
85AQI
91AQI
102AQI
111AQI
110AQI
104AQI
79AQI
70AQI
66AQI
63AQI
69AQI
68AQI
71AQI
70AQI
75AQI
84AQI
81AQI
82AQI
89AQI
86AQI
72AQI
68AQI
68AQI
64AQI
62AQI
64AQI
61AQI
61AQI
64AQI
63AQI
64AQI
62AQI
57AQI
57AQI
55AQI
54AQI
52AQI
55AQI
56AQI
56AQI
57AQI
57AQI
61AQI
63AQI
67AQI
69AQI
67AQI
67AQI
66AQI
62AQI
60AQI
60AQI
59AQI
58AQI
56AQI
57AQI
51AQI
46AQI
47AQI
47AQI
50AQI
50AQI
46AQI
45AQI
47AQI
52AQI
50AQI
47AQI
51AQI
53AQI
53AQI
54AQI
55AQI
53AQI
52AQI
52AQI
49AQI
51AQI
53AQI
55AQI
54AQI
54AQI
54AQI
51AQI
48AQI
47AQI
46AQI
47AQI
45AQI
41AQI
43AQI
50AQI
46AQI
44AQI
42AQI
49AQI
51AQI
48AQI
48AQI
51AQI
57AQI
56AQI
56AQI
54AQI
55AQI
52AQI
49AQI
46AQI
42AQI
42AQI
42AQI
45AQI
48AQI
49AQI
49AQI
47AQI
49AQI
45AQI
50AQI
48AQI
52AQI
51AQI
52AQI
50AQI
48AQI
52AQI
48AQI
47AQI
48AQI
51AQI
50AQI
49AQI
51AQI
50AQI
52AQI
50AQI
51AQI
51AQI
55AQI
55AQI
56AQI
52AQI
49AQI
52AQI
50AQI
47AQI
51AQI
49AQI
51AQI
96AQI
100AQI
126AQI
98AQI
66AQI
56AQI
50AQI
49AQI
51AQI
No. of days
202578AQI
Highest AQI recorded in
March126AQI
Lowest AQI recorded in
August49AQI
202459AQI
Highest AQI recorded in
April163AQI
Lowest AQI recorded in
July41AQI
2023138AQI
Highest AQI recorded in
April241AQI
Lowest AQI recorded in
June40AQI
202274AQI
Highest AQI recorded in
December89AQI
Lowest AQI recorded in
October60AQI
Most & Least Polluted Years Over the Last 4 Years
Chiang Dao District's annual 2025 AQI (78) shows an average percentage change of -2.2% (improved AQI) compared to previous years: 2022 (74), 2023 (138), 2024 (59).