City Monitoring Station, Qinhuangdao, 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
City Monitoring Station, Qinhuangdao, Hebei, China
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 66 of Moderate air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
City Monitoring Station, Qinhuangdao, Hebei, China
5 AM4th Oct 2025
6 PM
4 AM5th Oct 2025
AQI
AQI
122AQI
43AQI
In the last 24 hours,
City Monitoring Station's AQI reached its highest point of 122 at 1 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
City Monitoring Station, Qinhuangdao, Hebei, China
23°C20/27°C
23°C19/29°C
23°C19/28°C
23°C20/28°C
23°C19/28°C
23°C19/27°C
23°C21/27°C
23°C20/27°C
23°C19/27°C
23°C19/30°C
22°C18/25°C
22°C17/28°C
18°C14/23°C
19°C15/24°C
19°C16/23°C
19°C15/24°C
20°C17/24°C
20°C19/24°C
20°C18/23°C
20°C15/25°C
22°C17/28°C
22°C19/27°C
20°C18/23°C
21°C16/27°C
22°C18/28°C
22°C17/27°C
23°C19/29°C
22°C19/27°C
19°C17/23°C
--°C/°C
--°C/°C
73AQI
63AQI
80AQI
70AQI
2025 Days Vs Air Quality
City Monitoring Station, Qinhuangdao, Hebei, China
4%
10
81%
223
14%
39
2%
5
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 4%
Health Risk Level:
Extreme
In 2025, 4% of 277 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
City Monitoring Station, Qinhuangdao, Hebei, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
78AQI
74AQI
64AQI
114AQI
109AQI
78AQI
67AQI
59AQI
60AQI
62AQI
74AQI
90AQI
104AQI
73AQI
74AQI
71AQI
104AQI
135AQI
93AQI
128AQI
92AQI
96AQI
97AQI
133AQI
120AQI
149AQI
74AQI
105AQI
101AQI
89AQI
94AQI
112AQI
130AQI
71AQI
79AQI
57AQI
67AQI
49AQI
53AQI
66AQI
107AQI
132AQI
84AQI
117AQI
120AQI
118AQI
77AQI
76AQI
69AQI
69AQI
66AQI
62AQI
64AQI
55AQI
71AQI
90AQI
79AQI
148AQI
174AQI
163AQI
100AQI
89AQI
99AQI
122AQI
75AQI
98AQI
127AQI
161AQI
156AQI
168AQI
96AQI
101AQI
81AQI
73AQI
60AQI
68AQI
59AQI
72AQI
57AQI
57AQI
58AQI
85AQI
62AQI
80AQI
111AQI
76AQI
80AQI
65AQI
69AQI
107AQI
97AQI
71AQI
89AQI
92AQI
66AQI
79AQI
113AQI
69AQI
83AQI
108AQI
100AQI
89AQI
67AQI
71AQI
86AQI
98AQI
109AQI
73AQI
90AQI
94AQI
97AQI
70AQI
91AQI
59AQI
70AQI
90AQI
61AQI
76AQI
98AQI
98AQI
70AQI
71AQI
60AQI
67AQI
77AQI
72AQI
89AQI
79AQI
74AQI
70AQI
105AQI
111AQI
107AQI
94AQI
93AQI
87AQI
78AQI
77AQI
96AQI
103AQI
89AQI
118AQI
79AQI
79AQI
78AQI
92AQI
117AQI
96AQI
99AQI
104AQI
111AQI
88AQI
104AQI
59AQI
63AQI
68AQI
75AQI
63AQI
66AQI
71AQI
60AQI
72AQI
66AQI
65AQI
65AQI
58AQI
58AQI
62AQI
66AQI
66AQI
63AQI
59AQI
55AQI
60AQI
61AQI
61AQI
62AQI
63AQI
62AQI
72AQI
69AQI
67AQI
70AQI
56AQI
69AQI
70AQI
61AQI
62AQI
62AQI
62AQI
64AQI
63AQI
62AQI
60AQI
57AQI
57AQI
57AQI
54AQI
54AQI
49AQI
52AQI
59AQI
60AQI
50AQI
48AQI
56AQI
59AQI
55AQI
53AQI
50AQI
52AQI
53AQI
59AQI
59AQI
57AQI
53AQI
56AQI
60AQI
52AQI
46AQI
45AQI
46AQI
58AQI
62AQI
57AQI
62AQI
63AQI
59AQI
58AQI
63AQI
60AQI
59AQI
59AQI
57AQI
61AQI
60AQI
57AQI
56AQI
58AQI
54AQI
64AQI
63AQI
59AQI
63AQI
72AQI
74AQI
71AQI
69AQI
70AQI
70AQI
68AQI
79AQI
72AQI
75AQI
74AQI
72AQI
76AQI
64AQI
64AQI
49AQI
47AQI
59AQI
58AQI
58AQI
55AQI
53AQI
76AQI
84AQI
83AQI
99AQI
103AQI
70AQI
91AQI
115AQI
101AQI
69AQI
66AQI
92AQI
88AQI
93AQI
85AQI
88AQI
66AQI
58AQI
57AQI
71AQI
88AQI
No. of days
202578AQI
Highest AQI recorded in
March93AQI
Lowest AQI recorded in
August57AQI
202493AQI
Highest AQI recorded in
March112AQI
Lowest AQI recorded in
September68AQI
202394AQI
Highest AQI recorded in
March132AQI
Lowest AQI recorded in
August62AQI
202285AQI
Highest AQI recorded in
August159AQI
Lowest AQI recorded in
July64AQI
202188AQI
Highest AQI recorded in
March138AQI
Lowest AQI recorded in
July45AQI
202091AQI
Highest AQI recorded in
October106AQI
Lowest AQI recorded in
September73AQI
Most & Least Polluted Years Over the Last 6 Years
City Monitoring Station's annual 2025 AQI (78) shows an average percentage change of -13.6% (improved AQI) compared to previous years: 2020 (91), 2021 (88), 2022 (85), 2023 (94), 2024 (93).