Huicai Technical School, Foshan, Guangdong, China 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
Huicai Technical School, Foshan, Guangdong, China
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 55 of Moderate air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Huicai Technical School, Foshan, Guangdong, China
6 AM17th Sep 2025
6 PM
5 AM18th Sep 2025
70AQI
49AQI
56AQI
50AQI
In the last 24 hours,
Huicai Technical School's AQI reached its highest point of 70 at 9 AM during the Day, while the lowest point, 49, was recorded at 7 AM during the Day between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Huicai Technical School, Foshan, Guangdong, China
28°C26/30°C
30°C27/34°C
30°C28/35°C
31°C28/35°C
32°C29/37°C
31°C28/35°C
31°C28/36°C
32°C28/36°C
31°C28/35°C
30°C27/34°C
32°C28/37°C
32°C28/35°C
31°C28/35°C
32°C28/36°C
32°C29/37°C
32°C28/37°C
32°C29/37°C
32°C29/37°C
33°C29/37°C
31°C29/35°C
26°C25/27°C
28°C26/31°C
29°C26/33°C
30°C27/34°C
30°C27/35°C
31°C27/36°C
31°C27/36°C
31°C28/36°C
31°C28/34°C
31°C28/36°C
--°C/°C
55AQI
52AQI
56AQI
53AQI
2025 Days Vs Air Quality
Huicai Technical School, Foshan, Guangdong, China
20%
51
65%
170
13%
35
1%
3
0.3%
1
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
Huicai Technical School, Foshan, Guangdong, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
149AQI
151AQI
132AQI
140AQI
149AQI
150AQI
156AQI
151AQI
137AQI
98AQI
90AQI
87AQI
113AQI
123AQI
101AQI
101AQI
94AQI
112AQI
113AQI
123AQI
141AQI
118AQI
137AQI
87AQI
82AQI
51AQI
64AQI
63AQI
105AQI
91AQI
77AQI
83AQI
79AQI
46AQI
71AQI
77AQI
83AQI
62AQI
71AQI
57AQI
88AQI
89AQI
94AQI
90AQI
95AQI
87AQI
127AQI
90AQI
110AQI
89AQI
90AQI
72AQI
77AQI
56AQI
72AQI
82AQI
103AQI
111AQI
86AQI
77AQI
68AQI
71AQI
60AQI
54AQI
43AQI
57AQI
65AQI
103AQI
106AQI
82AQI
81AQI
66AQI
65AQI
50AQI
43AQI
75AQI
72AQI
78AQI
97AQI
109AQI
104AQI
105AQI
118AQI
102AQI
90AQI
73AQI
80AQI
51AQI
49AQI
52AQI
65AQI
74AQI
93AQI
77AQI
81AQI
108AQI
118AQI
111AQI
98AQI
84AQI
74AQI
76AQI
251AQI
141AQI
141AQI
132AQI
105AQI
92AQI
76AQI
71AQI
62AQI
65AQI
66AQI
56AQI
50AQI
72AQI
63AQI
61AQI
69AQI
75AQI
71AQI
88AQI
71AQI
64AQI
61AQI
61AQI
51AQI
56AQI
49AQI
59AQI
57AQI
78AQI
71AQI
63AQI
54AQI
47AQI
51AQI
50AQI
53AQI
51AQI
53AQI
53AQI
55AQI
54AQI
74AQI
81AQI
86AQI
72AQI
58AQI
60AQI
62AQI
64AQI
58AQI
48AQI
64AQI
58AQI
63AQI
55AQI
46AQI
54AQI
63AQI
49AQI
48AQI
41AQI
39AQI
41AQI
47AQI
39AQI
42AQI
39AQI
37AQI
33AQI
29AQI
28AQI
29AQI
34AQI
30AQI
30AQI
31AQI
32AQI
33AQI
31AQI
34AQI
49AQI
55AQI
63AQI
63AQI
67AQI
60AQI
60AQI
60AQI
53AQI
57AQI
55AQI
57AQI
60AQI
60AQI
63AQI
71AQI
60AQI
51AQI
48AQI
44AQI
49AQI
54AQI
56AQI
59AQI
66AQI
72AQI
68AQI
64AQI
62AQI
58AQI
56AQI
58AQI
59AQI
55AQI
49AQI
55AQI
60AQI
65AQI
60AQI
58AQI
56AQI
61AQI
58AQI
42AQI
54AQI
50AQI
45AQI
47AQI
48AQI
47AQI
53AQI
59AQI
51AQI
50AQI
56AQI
57AQI
61AQI
58AQI
54AQI
55AQI
56AQI
56AQI
56AQI
60AQI
54AQI
58AQI
55AQI
43AQI
47AQI
51AQI
54AQI
50AQI
49AQI
49AQI
48AQI
53AQI
55AQI
112AQI
83AQI
76AQI
90AQI
62AQI
43AQI
57AQI
55AQI
53AQI
No. of days
202571AQI
Highest AQI recorded in
January112AQI
Lowest AQI recorded in
June43AQI
202472AQI
Highest AQI recorded in
December117AQI
Lowest AQI recorded in
July37AQI
202375AQI
Highest AQI recorded in
December99AQI
Lowest AQI recorded in
July47AQI
202274AQI
Highest AQI recorded in
September99AQI
Lowest AQI recorded in
June43AQI
202176AQI
Highest AQI recorded in
January120AQI
Lowest AQI recorded in
May53AQI
202073AQI
Highest AQI recorded in
December101AQI
Lowest AQI recorded in
June43AQI
Most & Least Polluted Years Over the Last 6 Years
Huicai Technical School's annual 2025 AQI (71) shows an average percentage change of -3.9% (improved AQI) compared to previous years: 2020 (73), 2021 (76), 2022 (74), 2023 (75), 2024 (72).