Dachang County Government, Sanhe, Hebei, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Dachang County Government, Sanhe, Hebei, China
AQI Trends: Highest and Lowest
Same Day Analysis (11th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 56 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Oct - 12th Oct 2025
Dachang County Government, Sanhe, Hebei, China
6 AM11th Oct 2025
6 PM
5 AM12th Oct 2025
60AQI
53AQI
71AQI
56AQI
In the last 24 hours,
Dachang County Government's AQI reached its highest point of 71 at 3 AM during the Night, while the lowest point, 53, was recorded at 3 PM during the Day between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Dachang County Government, Sanhe, Hebei, China
23°C20/27°C
23°C19/29°C
23°C18/30°C
19°C18/21°C
20°C16/23°C
18°C14/23°C
19°C14/25°C
19°C15/23°C
20°C14/28°C
22°C16/27°C
18°C16/20°C
17°C15/20°C
20°C14/28°C
22°C16/28°C
23°C19/28°C
19°C17/20°C
22°C16/29°C
23°C17/29°C
23°C17/29°C
24°C19/30°C
23°C19/29°C
19°C18/22°C
21°C17/26°C
19°C16/22°C
16°C13/21°C
19°C15/24°C
13°C10/17°C
10°C9/10°C
11°C10/15°C
14°C11/19°C
--°C/°C
72AQI
56AQI
73AQI
61AQI
2025 Days Vs Air Quality
Dachang County Government, Sanhe, Hebei, China
5%
15
79%
224
13%
38
2%
6
0.3%
1
Total number of days with different AQI categories in last 285 days in 2025 (80 days remaining)
Under WHO’s Safe Air Quality Limits: 5%
Health Risk Level:
Extreme
In 2025, 5% of 285 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
Dachang County Government, Sanhe, Hebei, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
83AQI
63AQI
75AQI
100AQI
78AQI
52AQI
52AQI
38AQI
42AQI
47AQI
64AQI
59AQI
90AQI
49AQI
65AQI
62AQI
101AQI
131AQI
73AQI
136AQI
81AQI
120AQI
130AQI
154AQI
165AQI
123AQI
73AQI
79AQI
145AQI
100AQI
148AQI
126AQI
95AQI
61AQI
57AQI
51AQI
58AQI
38AQI
43AQI
42AQI
111AQI
138AQI
73AQI
130AQI
104AQI
129AQI
57AQI
66AQI
65AQI
60AQI
59AQI
50AQI
52AQI
44AQI
74AQI
64AQI
93AQI
141AQI
155AQI
204AQI
103AQI
98AQI
99AQI
139AQI
61AQI
145AQI
136AQI
170AQI
168AQI
186AQI
89AQI
150AQI
96AQI
104AQI
62AQI
63AQI
60AQI
62AQI
49AQI
54AQI
61AQI
104AQI
56AQI
76AQI
97AQI
57AQI
70AQI
56AQI
71AQI
92AQI
70AQI
64AQI
88AQI
92AQI
60AQI
101AQI
81AQI
77AQI
81AQI
107AQI
123AQI
105AQI
94AQI
81AQI
81AQI
120AQI
86AQI
80AQI
80AQI
97AQI
123AQI
70AQI
89AQI
57AQI
80AQI
112AQI
67AQI
92AQI
88AQI
73AQI
67AQI
71AQI
59AQI
75AQI
86AQI
67AQI
97AQI
109AQI
72AQI
84AQI
93AQI
108AQI
97AQI
71AQI
76AQI
115AQI
69AQI
92AQI
87AQI
122AQI
99AQI
115AQI
93AQI
80AQI
89AQI
93AQI
87AQI
100AQI
98AQI
108AQI
115AQI
107AQI
70AQI
51AQI
53AQI
71AQI
59AQI
62AQI
69AQI
69AQI
61AQI
73AQI
82AQI
86AQI
83AQI
58AQI
53AQI
68AQI
73AQI
69AQI
58AQI
55AQI
53AQI
65AQI
74AQI
67AQI
74AQI
80AQI
75AQI
86AQI
77AQI
70AQI
74AQI
64AQI
70AQI
66AQI
59AQI
64AQI
66AQI
67AQI
71AQI
76AQI
75AQI
61AQI
63AQI
68AQI
64AQI
57AQI
63AQI
69AQI
57AQI
62AQI
71AQI
66AQI
64AQI
68AQI
68AQI
66AQI
59AQI
51AQI
53AQI
63AQI
67AQI
65AQI
61AQI
63AQI
59AQI
68AQI
65AQI
67AQI
56AQI
62AQI
65AQI
67AQI
59AQI
67AQI
72AQI
59AQI
62AQI
64AQI
57AQI
59AQI
57AQI
53AQI
53AQI
54AQI
55AQI
59AQI
57AQI
50AQI
65AQI
62AQI
59AQI
59AQI
72AQI
76AQI
76AQI
82AQI
66AQI
68AQI
65AQI
76AQI
70AQI
76AQI
82AQI
79AQI
70AQI
65AQI
56AQI
49AQI
50AQI
59AQI
60AQI
71AQI
65AQI
70AQI
80AQI
59AQI
73AQI
88AQI
59AQI
67AQI
69AQI
83AQI
73AQI
82AQI
93AQI
116AQI
56AQI
87AQI
66AQI
40AQI
47AQI
56AQI
90AQI
80AQI
98AQI
87AQI
90AQI
69AQI
65AQI
61AQI
69AQI
73AQI
No. of days
202579AQI
Highest AQI recorded in
March98AQI
Lowest AQI recorded in
August61AQI
202471AQI
Highest AQI recorded in
October99AQI
Lowest AQI recorded in
April19AQI
202386AQI
Highest AQI recorded in
March123AQI
Lowest AQI recorded in
November21AQI
202289AQI
Highest AQI recorded in
November109AQI
Lowest AQI recorded in
August44AQI
202198AQI
Highest AQI recorded in
March164AQI
Lowest AQI recorded in
July57AQI
202090AQI
Highest AQI recorded in
March127AQI
Lowest AQI recorded in
September75AQI
Most & Least Polluted Years Over the Last 6 Years
Dachang County Government's annual 2025 AQI (79) shows an average percentage change of -8.4% (improved AQI) compared to previous years: 2020 (90), 2021 (98), 2022 (89), 2023 (86), 2024 (71).