Wen An County Environmental Protection Bureau, Bazhou, 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
Wen An County Environmental Protection Bureau, Bazhou, 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 75 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 22nd Sep - 23rd Sep 2025
Wen An County Environmental Protection Bureau, Bazhou, Hebei, China
5 AM22nd Sep 2025
6 PM
4 AM23rd Sep 2025
AQI
AQI
78AQI
60AQI
In the last 24 hours,
Wen An County Environmental Protection Bureau's AQI reached its highest point of 78 at 8 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 22nd Sep and 23rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Wen An County Environmental Protection Bureau, Bazhou, Hebei, China
21°C20/22°C
25°C20/30°C
26°C22/31°C
23°C20/24°C
24°C20/29°C
25°C22/30°C
23°C22/26°C
24°C21/29°C
25°C20/31°C
26°C22/30°C
26°C23/31°C
26°C22/31°C
22°C20/26°C
24°C19/30°C
23°C18/29°C
25°C19/30°C
24°C18/31°C
24°C18/31°C
25°C20/30°C
23°C19/28°C
24°C19/30°C
24°C20/31°C
22°C20/26°C
21°C18/26°C
18°C15/23°C
19°C13/25°C
17°C13/20°C
20°C12/28°C
22°C16/27°C
--°C/°C
--°C/°C
79AQI
58AQI
73AQI
65AQI
2025 Days Vs Air Quality
Wen An County Environmental Protection Bureau, Bazhou, Hebei, China
0.3%
1
73%
192
23%
62
3%
8
0.3%
1
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
Wen An County Environmental Protection Bureau, Bazhou, Hebei, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
128AQI
85AQI
114AQI
148AQI
126AQI
87AQI
78AQI
57AQI
62AQI
88AQI
104AQI
88AQI
133AQI
71AQI
91AQI
87AQI
114AQI
146AQI
114AQI
149AQI
128AQI
109AQI
118AQI
138AQI
153AQI
131AQI
83AQI
110AQI
216AQI
109AQI
141AQI
120AQI
135AQI
74AQI
76AQI
60AQI
79AQI
47AQI
59AQI
84AQI
128AQI
143AQI
99AQI
136AQI
137AQI
147AQI
91AQI
84AQI
88AQI
89AQI
94AQI
79AQI
94AQI
65AQI
91AQI
93AQI
127AQI
153AQI
173AQI
192AQI
122AQI
100AQI
97AQI
129AQI
83AQI
146AQI
140AQI
162AQI
166AQI
175AQI
127AQI
158AQI
113AQI
105AQI
79AQI
74AQI
64AQI
82AQI
64AQI
70AQI
73AQI
115AQI
80AQI
82AQI
108AQI
76AQI
83AQI
62AQI
83AQI
97AQI
90AQI
69AQI
92AQI
117AQI
68AQI
116AQI
112AQI
103AQI
104AQI
119AQI
135AQI
101AQI
89AQI
78AQI
81AQI
117AQI
110AQI
82AQI
91AQI
105AQI
128AQI
82AQI
101AQI
64AQI
90AQI
107AQI
79AQI
87AQI
91AQI
93AQI
73AQI
88AQI
61AQI
80AQI
91AQI
78AQI
104AQI
109AQI
78AQI
83AQI
90AQI
97AQI
101AQI
80AQI
76AQI
122AQI
73AQI
98AQI
104AQI
120AQI
98AQI
128AQI
120AQI
94AQI
100AQI
100AQI
97AQI
111AQI
104AQI
103AQI
102AQI
115AQI
93AQI
63AQI
64AQI
76AQI
84AQI
74AQI
77AQI
86AQI
72AQI
79AQI
86AQI
93AQI
88AQI
71AQI
59AQI
68AQI
73AQI
66AQI
66AQI
64AQI
53AQI
62AQI
65AQI
72AQI
72AQI
79AQI
82AQI
85AQI
75AQI
67AQI
68AQI
61AQI
65AQI
63AQI
58AQI
60AQI
61AQI
64AQI
71AQI
75AQI
75AQI
67AQI
65AQI
68AQI
66AQI
62AQI
64AQI
63AQI
67AQI
71AQI
67AQI
63AQI
64AQI
65AQI
65AQI
62AQI
65AQI
57AQI
60AQI
60AQI
66AQI
64AQI
62AQI
62AQI
62AQI
67AQI
70AQI
62AQI
62AQI
63AQI
66AQI
66AQI
61AQI
67AQI
66AQI
57AQI
61AQI
61AQI
61AQI
60AQI
58AQI
54AQI
56AQI
56AQI
56AQI
62AQI
59AQI
51AQI
62AQI
60AQI
57AQI
58AQI
69AQI
74AQI
90AQI
85AQI
65AQI
68AQI
69AQI
74AQI
68AQI
75AQI
78AQI
80AQI
76AQI
81AQI
71AQI
56AQI
59AQI
62AQI
68AQI
75AQI
113AQI
102AQI
107AQI
97AQI
96AQI
75AQI
65AQI
61AQI
71AQI
No. of days
202588AQI
Highest AQI recorded in
January113AQI
Lowest AQI recorded in
August61AQI
202489AQI
Highest AQI recorded in
January137AQI
Lowest AQI recorded in
March63AQI
202390AQI
Highest AQI recorded in
December95AQI
Lowest AQI recorded in
November42AQI
2022105AQI
Highest AQI recorded in
January139AQI
Lowest AQI recorded in
July61AQI
202162AQI
Highest AQI recorded in
January134AQI
Lowest AQI recorded in
October1AQI
2020110AQI
Highest AQI recorded in
December137AQI
Lowest AQI recorded in
September89AQI
Most & Least Polluted Years Over the Last 6 Years
Wen An County Environmental Protection Bureau's annual 2025 AQI (88) shows an average percentage change of 0.06% (worsened AQI) compared to previous years: 2020 (110), 2021 (62), 2022 (105), 2023 (90), 2024 (89).