Yupparaj Wittayalai School, Chiang Mai, 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
Yupparaj Wittayalai School, Chiang Mai, Chiang Mai, Thailand
AQI Trends: Highest and Lowest
Same Day Analysis (5th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 55 of Moderate air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Sep - 6th Sep 2025
Yupparaj Wittayalai School, Chiang Mai, Chiang Mai, Thailand
6 AM5th Sep 2025
6 PM
5 AM6th Sep 2025
AQI
AQI
66AQI
48AQI
In the last 24 hours,
Yupparaj Wittayalai School's AQI reached its highest point of 66 at 11 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 5th Sep and 6th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Yupparaj Wittayalai School, Chiang Mai, Chiang Mai, Thailand
24°C22/28°C
25°C22/31°C
26°C23/31°C
27°C22/32°C
27°C22/32°C
27°C23/32°C
26°C22/32°C
25°C23/30°C
25°C22/29°C
25°C22/29°C
25°C23/28°C
25°C21/30°C
26°C21/31°C
26°C22/31°C
26°C22/32°C
26°C22/32°C
25°C23/30°C
25°C22/32°C
26°C22/33°C
23°C22/24°C
22°C22/23°C
22°C21/26°C
25°C20/31°C
26°C21/33°C
24°C22/27°C
24°C22/28°C
25°C22/31°C
26°C22/32°C
26°C23/33°C
--°C/°C
--°C/°C
55AQI
52AQI
56AQI
54AQI
2025 Days Vs Air Quality
Yupparaj Wittayalai School, Chiang Mai, Chiang Mai, Thailand
0.4%
1
80%
199
19%
46
0.8%
2
Total number of days with different AQI categories in last 248 days in 2025 (117 days remaining)
Under WHO’s Safe Air Quality Limits: 0.4%
Health Risk Level:
Extreme
In 2025, 0.4% of 248 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
Yupparaj Wittayalai School, Chiang Mai, Chiang Mai, Thailand
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
87AQI
91AQI
86AQI
90AQI
93AQI
99AQI
102AQI
105AQI
119AQI
112AQI
93AQI
81AQI
85AQI
93AQI
92AQI
89AQI
85AQI
84AQI
86AQI
97AQI
112AQI
109AQI
113AQI
103AQI
95AQI
93AQI
104AQI
82AQI
103AQI
120AQI
95AQI
92AQI
88AQI
96AQI
111AQI
114AQI
102AQI
105AQI
115AQI
98AQI
89AQI
91AQI
86AQI
83AQI
79AQI
86AQI
98AQI
102AQI
104AQI
107AQI
99AQI
95AQI
94AQI
92AQI
82AQI
81AQI
69AQI
70AQI
75AQI
76AQI
76AQI
85AQI
97AQI
125AQI
111AQI
117AQI
101AQI
93AQI
84AQI
90AQI
88AQI
82AQI
91AQI
120AQI
130AQI
141AQI
130AQI
122AQI
93AQI
118AQI
137AQI
148AQI
144AQI
139AQI
126AQI
141AQI
149AQI
153AQI
160AQI
148AQI
132AQI
131AQI
121AQI
118AQI
115AQI
106AQI
91AQI
85AQI
92AQI
105AQI
93AQI
88AQI
86AQI
76AQI
74AQI
70AQI
71AQI
68AQI
70AQI
71AQI
74AQI
80AQI
80AQI
95AQI
104AQI
105AQI
96AQI
85AQI
81AQI
74AQI
71AQI
66AQI
61AQI
66AQI
64AQI
74AQI
71AQI
77AQI
78AQI
81AQI
80AQI
73AQI
68AQI
66AQI
62AQI
63AQI
66AQI
60AQI
62AQI
62AQI
62AQI
68AQI
62AQI
59AQI
56AQI
56AQI
55AQI
54AQI
56AQI
55AQI
55AQI
57AQI
62AQI
64AQI
75AQI
70AQI
71AQI
70AQI
67AQI
65AQI
61AQI
56AQI
55AQI
56AQI
56AQI
55AQI
53AQI
54AQI
56AQI
56AQI
57AQI
57AQI
53AQI
57AQI
61AQI
62AQI
65AQI
65AQI
64AQI
64AQI
69AQI
70AQI
65AQI
69AQI
69AQI
69AQI
63AQI
61AQI
65AQI
65AQI
67AQI
68AQI
65AQI
63AQI
59AQI
60AQI
61AQI
59AQI
56AQI
56AQI
56AQI
59AQI
59AQI
57AQI
57AQI
56AQI
60AQI
61AQI
60AQI
58AQI
60AQI
62AQI
57AQI
57AQI
57AQI
57AQI
57AQI
55AQI
55AQI
52AQI
56AQI
55AQI
51AQI
51AQI
52AQI
54AQI
49AQI
51AQI
51AQI
53AQI
52AQI
54AQI
57AQI
56AQI
53AQI
53AQI
54AQI
51AQI
52AQI
52AQI
54AQI
55AQI
53AQI
55AQI
57AQI
58AQI
66AQI
55AQI
97AQI
93AQI
117AQI
91AQI
65AQI
61AQI
62AQI
54AQI
58AQI
No. of days
202579AQI
Highest AQI recorded in
March117AQI
Lowest AQI recorded in
August54AQI
202496AQI
Highest AQI recorded in
April159AQI
Lowest AQI recorded in
October73AQI
2023101AQI
Highest AQI recorded in
April175AQI
Lowest AQI recorded in
June72AQI
202266AQI
Highest AQI recorded in
April109AQI
Lowest AQI recorded in
July29AQI
202168AQI
Highest AQI recorded in
March154AQI
Lowest AQI recorded in
September31AQI
202062AQI
Highest AQI recorded in
March166AQI
Lowest AQI recorded in
June29AQI
Most & Least Polluted Years Over the Last 6 Years
Yupparaj Wittayalai School's annual 2025 AQI (79) shows an average percentage change of 4.8% (worsened AQI) compared to previous years: 2020 (62), 2021 (68), 2022 (66), 2023 (101), 2024 (96).