Hetou, Tangshan, 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
Hetou, Tangshan, 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
Hetou, Tangshan, Hebei, China
5 AM22nd Sep 2025
6 PM
4 AM23rd Sep 2025
AQI
AQI
77AQI
54AQI
In the last 24 hours,
Hetou's AQI reached its highest point of 77 at 10 AM during the Night, while the lowest point, 54, was recorded at 4 PM during the Night between 22nd Sep and 23rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Hetou, Tangshan, Hebei, China
22°C21/24°C
25°C22/29°C
25°C21/31°C
22°C20/23°C
23°C19/27°C
24°C21/30°C
23°C22/27°C
23°C20/27°C
25°C20/30°C
25°C21/31°C
26°C22/31°C
25°C21/31°C
22°C20/28°C
23°C18/29°C
23°C18/29°C
24°C19/30°C
23°C19/29°C
23°C18/29°C
25°C21/30°C
23°C20/28°C
24°C19/29°C
24°C20/30°C
23°C18/28°C
22°C18/26°C
18°C14/23°C
19°C14/25°C
18°C14/21°C
20°C13/28°C
21°C16/27°C
--°C/°C
--°C/°C
80AQI
60AQI
71AQI
66AQI
2025 Days Vs Air Quality
Hetou, Tangshan, Hebei, China
0.7%
2
76%
200
22%
57
2%
5
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 0.76%
Health Risk Level:
Extreme
In 2025, 0.76% 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
Hetou, Tangshan, Hebei, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
90AQI
65AQI
82AQI
124AQI
106AQI
79AQI
71AQI
53AQI
53AQI
60AQI
73AQI
72AQI
93AQI
65AQI
69AQI
73AQI
94AQI
128AQI
95AQI
132AQI
108AQI
111AQI
111AQI
142AQI
151AQI
120AQI
88AQI
98AQI
134AQI
105AQI
114AQI
100AQI
99AQI
70AQI
69AQI
59AQI
65AQI
45AQI
50AQI
61AQI
112AQI
129AQI
88AQI
126AQI
125AQI
130AQI
84AQI
78AQI
85AQI
77AQI
79AQI
67AQI
69AQI
61AQI
78AQI
77AQI
92AQI
139AQI
164AQI
164AQI
109AQI
97AQI
110AQI
123AQI
91AQI
108AQI
136AQI
146AQI
160AQI
166AQI
106AQI
124AQI
104AQI
105AQI
78AQI
71AQI
67AQI
76AQI
62AQI
66AQI
67AQI
100AQI
72AQI
79AQI
112AQI
89AQI
91AQI
79AQI
79AQI
99AQI
97AQI
77AQI
100AQI
110AQI
73AQI
104AQI
100AQI
89AQI
103AQI
114AQI
124AQI
97AQI
84AQI
79AQI
89AQI
109AQI
109AQI
94AQI
98AQI
100AQI
126AQI
82AQI
107AQI
69AQI
89AQI
103AQI
81AQI
90AQI
98AQI
106AQI
87AQI
86AQI
70AQI
84AQI
89AQI
78AQI
98AQI
100AQI
80AQI
83AQI
101AQI
101AQI
101AQI
94AQI
91AQI
115AQI
79AQI
96AQI
107AQI
120AQI
103AQI
123AQI
101AQI
94AQI
97AQI
106AQI
104AQI
108AQI
103AQI
102AQI
111AQI
105AQI
103AQI
74AQI
74AQI
81AQI
84AQI
76AQI
71AQI
86AQI
76AQI
85AQI
89AQI
89AQI
90AQI
76AQI
69AQI
75AQI
76AQI
69AQI
66AQI
62AQI
55AQI
68AQI
74AQI
69AQI
74AQI
72AQI
75AQI
83AQI
73AQI
70AQI
73AQI
64AQI
70AQI
70AQI
60AQI
63AQI
62AQI
65AQI
69AQI
74AQI
73AQI
68AQI
64AQI
66AQI
64AQI
60AQI
66AQI
62AQI
64AQI
64AQI
68AQI
62AQI
63AQI
67AQI
66AQI
63AQI
64AQI
55AQI
56AQI
62AQI
64AQI
64AQI
64AQI
60AQI
63AQI
70AQI
69AQI
63AQI
62AQI
61AQI
65AQI
68AQI
63AQI
67AQI
69AQI
62AQI
62AQI
64AQI
62AQI
63AQI
60AQI
57AQI
59AQI
59AQI
58AQI
63AQI
62AQI
54AQI
63AQI
62AQI
60AQI
61AQI
71AQI
76AQI
94AQI
86AQI
69AQI
71AQI
69AQI
75AQI
71AQI
76AQI
80AQI
78AQI
77AQI
77AQI
63AQI
52AQI
55AQI
61AQI
65AQI
75AQI
95AQI
89AQI
101AQI
97AQI
97AQI
77AQI
65AQI
63AQI
72AQI
No. of days
202584AQI
Highest AQI recorded in
March101AQI
Lowest AQI recorded in
August63AQI
202483AQI
Highest AQI recorded in
January124AQI
Lowest AQI recorded in
March61AQI
2023114AQI
Highest AQI recorded in
December120AQI
Lowest AQI recorded in
November55AQI
202280AQI
Highest AQI recorded in
January96AQI
Lowest AQI recorded in
July57AQI
202166AQI
Highest AQI recorded in
March145AQI
Lowest AQI recorded in
October1AQI
202087AQI
Highest AQI recorded in
July97AQI
Lowest AQI recorded in
September75AQI
Most & Least Polluted Years Over the Last 6 Years
Hetou's annual 2025 AQI (84) shows an average percentage change of 0.9% (worsened AQI) compared to previous years: 2020 (87), 2021 (66), 2022 (80), 2023 (114), 2024 (83).