Tangyuan Kaiyuan Building, Dingzhou, Hebei, 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
Tangyuan Kaiyuan Building, Dingzhou, Hebei, China
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 1st highest AQI at 68 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Sep - 22nd Sep 2025
Tangyuan Kaiyuan Building, Dingzhou, Hebei, China
5 AM21st Sep 2025
6 PM
4 AM22nd Sep 2025
108AQI
60AQI
100AQI
60AQI
In the last 24 hours,
Tangyuan Kaiyuan Building's AQI reached its highest point of 108 at 6 PM during the Day, while the lowest point, 60, was recorded at 2 AM during the Night between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Tangyuan Kaiyuan Building, Dingzhou, Hebei, China
26°C22/30°C
22°C20/25°C
26°C20/33°C
25°C22/31°C
22°C21/24°C
24°C19/30°C
25°C22/28°C
24°C22/28°C
25°C20/30°C
26°C20/32°C
26°C21/31°C
26°C22/32°C
26°C22/31°C
22°C20/24°C
24°C17/31°C
23°C18/30°C
25°C20/31°C
25°C18/34°C
24°C18/32°C
24°C19/31°C
23°C19/30°C
25°C18/33°C
26°C19/33°C
22°C18/27°C
21°C19/24°C
17°C14/19°C
19°C13/25°C
17°C13/20°C
20°C12/28°C
22°C17/27°C
--°C/°C
68AQI
62AQI
66AQI
66AQI
2025 Days Vs Air Quality
Tangyuan Kaiyuan Building, Dingzhou, Hebei, China
0.3%
1
77%
202
18%
48
5%
13
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 0.38%
Health Risk Level:
Extreme
In 2025, 0.38% of 265 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
Tangyuan Kaiyuan Building, Dingzhou, Hebei, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
112AQI
104AQI
114AQI
132AQI
98AQI
77AQI
65AQI
57AQI
63AQI
80AQI
102AQI
80AQI
113AQI
72AQI
81AQI
79AQI
117AQI
139AQI
116AQI
153AQI
125AQI
127AQI
143AQI
154AQI
162AQI
113AQI
80AQI
93AQI
196AQI
126AQI
172AQI
151AQI
171AQI
96AQI
89AQI
61AQI
90AQI
47AQI
61AQI
77AQI
117AQI
141AQI
97AQI
109AQI
125AQI
118AQI
77AQI
75AQI
87AQI
86AQI
92AQI
92AQI
90AQI
65AQI
84AQI
90AQI
110AQI
144AQI
161AQI
194AQI
143AQI
108AQI
98AQI
126AQI
79AQI
133AQI
135AQI
156AQI
163AQI
176AQI
129AQI
156AQI
120AQI
106AQI
71AQI
74AQI
65AQI
76AQI
57AQI
60AQI
67AQI
121AQI
83AQI
99AQI
97AQI
97AQI
81AQI
68AQI
77AQI
83AQI
74AQI
65AQI
89AQI
108AQI
66AQI
109AQI
123AQI
103AQI
117AQI
101AQI
148AQI
86AQI
86AQI
69AQI
75AQI
112AQI
119AQI
93AQI
99AQI
116AQI
112AQI
78AQI
92AQI
65AQI
96AQI
109AQI
86AQI
75AQI
79AQI
81AQI
67AQI
87AQI
57AQI
82AQI
97AQI
77AQI
100AQI
113AQI
71AQI
86AQI
72AQI
88AQI
96AQI
72AQI
76AQI
88AQI
72AQI
84AQI
99AQI
112AQI
105AQI
111AQI
111AQI
84AQI
92AQI
89AQI
99AQI
96AQI
97AQI
95AQI
96AQI
114AQI
90AQI
65AQI
64AQI
73AQI
76AQI
77AQI
83AQI
83AQI
69AQI
80AQI
87AQI
88AQI
81AQI
66AQI
59AQI
65AQI
74AQI
67AQI
68AQI
64AQI
54AQI
62AQI
64AQI
72AQI
71AQI
75AQI
75AQI
74AQI
76AQI
69AQI
70AQI
62AQI
68AQI
59AQI
58AQI
62AQI
65AQI
70AQI
70AQI
78AQI
80AQI
71AQI
74AQI
77AQI
76AQI
69AQI
69AQI
77AQI
67AQI
70AQI
69AQI
67AQI
66AQI
66AQI
69AQI
67AQI
67AQI
54AQI
59AQI
60AQI
66AQI
68AQI
66AQI
64AQI
62AQI
69AQI
67AQI
64AQI
56AQI
61AQI
64AQI
64AQI
60AQI
66AQI
67AQI
54AQI
60AQI
64AQI
62AQI
57AQI
57AQI
55AQI
54AQI
56AQI
57AQI
60AQI
59AQI
56AQI
62AQI
61AQI
59AQI
60AQI
70AQI
71AQI
71AQI
75AQI
67AQI
68AQI
69AQI
72AQI
68AQI
71AQI
72AQI
76AQI
73AQI
78AQI
69AQI
56AQI
60AQI
59AQI
65AQI
68AQI
111AQI
100AQI
106AQI
94AQI
89AQI
74AQI
68AQI
61AQI
68AQI
No. of days
202586AQI
Highest AQI recorded in
January111AQI
Lowest AQI recorded in
August61AQI
202486AQI
Highest AQI recorded in
October130AQI
Lowest AQI recorded in
January47AQI
202347AQI
Highest AQI recorded in
December47AQI
Lowest AQI recorded in
November46AQI
2022104AQI
Highest AQI recorded in
January151AQI
Lowest AQI recorded in
July64AQI
202189AQI
Highest AQI recorded in
March198AQI
Lowest AQI recorded in
October1AQI
2020121AQI
Highest AQI recorded in
July139AQI
Lowest AQI recorded in
September91AQI
Most & Least Polluted Years Over the Last 6 Years
Tangyuan Kaiyuan Building's annual 2025 AQI (86) shows an average percentage change of 7.5% (worsened AQI) compared to previous years: 2020 (121), 2021 (89), 2022 (104), 2023 (47), 2024 (86).