Qian An Tangshan Dada Qian An Campus, Qianan, Hebei, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Qian An Tangshan Dada Qian An Campus, Qianan, Hebei, China
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 74 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Qian An Tangshan Dada Qian An Campus, Qianan, Hebei, China
4 AM2nd Jul 2025
7 PM
3 AM3rd Jul 2025
97AQI
65AQI
71AQI
69AQI
In the last 24 hours,
Qian An Tangshan Dada Qian An Campus's AQI reached its highest point of 97 at 9 AM during the Day, while the lowest point, 65, was recorded at 4 PM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Qian An Tangshan Dada Qian An Campus, Qianan, Hebei, China
23°C16/29°C
25°C17/34°C
28°C21/37°C
27°C20/36°C
26°C19/33°C
26°C18/34°C
25°C19/35°C
25°C17/34°C
27°C19/35°C
28°C21/35°C
25°C17/33°C
25°C19/33°C
22°C20/26°C
22°C18/28°C
27°C19/35°C
28°C21/37°C
24°C21/28°C
26°C20/33°C
27°C20/33°C
30°C22/38°C
31°C23/40°C
30°C24/39°C
29°C22/37°C
28°C22/35°C
22°C21/23°C
25°C21/32°C
26°C21/32°C
27°C22/32°C
25°C23/26°C
28°C23/34°C
0°C0/0°C
69AQI
69AQI
67AQI
67AQI
2025 Days Vs Air Quality
Qian An Tangshan Dada Qian An Campus, Qianan, Hebei, China
2%
3
75%
137
20%
37
3%
6
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 2%
Health Risk Level:
Extreme
In 2025, 2% of 184 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
Qian An Tangshan Dada Qian An Campus, Qianan, Hebei, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
79AQI
67AQI
72AQI
97AQI
102AQI
73AQI
62AQI
52AQI
54AQI
60AQI
75AQI
79AQI
88AQI
65AQI
65AQI
70AQI
94AQI
133AQI
89AQI
132AQI
86AQI
108AQI
126AQI
144AQI
153AQI
132AQI
78AQI
87AQI
125AQI
97AQI
129AQI
115AQI
113AQI
70AQI
67AQI
53AQI
58AQI
42AQI
48AQI
57AQI
102AQI
125AQI
80AQI
113AQI
112AQI
125AQI
73AQI
71AQI
67AQI
63AQI
59AQI
55AQI
58AQI
52AQI
69AQI
73AQI
85AQI
138AQI
161AQI
153AQI
97AQI
93AQI
103AQI
120AQI
78AQI
98AQI
133AQI
154AQI
161AQI
175AQI
90AQI
111AQI
88AQI
87AQI
68AQI
65AQI
58AQI
69AQI
59AQI
59AQI
65AQI
104AQI
61AQI
79AQI
104AQI
72AQI
76AQI
63AQI
70AQI
94AQI
87AQI
67AQI
86AQI
92AQI
62AQI
87AQI
92AQI
76AQI
88AQI
108AQI
120AQI
92AQI
78AQI
75AQI
82AQI
108AQI
107AQI
77AQI
85AQI
95AQI
106AQI
74AQI
89AQI
60AQI
74AQI
105AQI
68AQI
81AQI
93AQI
89AQI
74AQI
73AQI
61AQI
71AQI
84AQI
70AQI
93AQI
89AQI
72AQI
75AQI
98AQI
110AQI
103AQI
87AQI
85AQI
106AQI
74AQI
84AQI
89AQI
116AQI
100AQI
117AQI
84AQI
83AQI
90AQI
89AQI
93AQI
97AQI
100AQI
109AQI
115AQI
102AQI
85AQI
59AQI
59AQI
75AQI
70AQI
65AQI
71AQI
79AQI
62AQI
75AQI
74AQI
75AQI
74AQI
62AQI
56AQI
66AQI
70AQI
67AQI
59AQI
52AQI
44AQI
63AQI
71AQI
68AQI
70AQI
73AQI
72AQI
81AQI
76AQI
71AQI
74AQI
93AQI
82AQI
94AQI
87AQI
90AQI
69AQI
73AQI
No. of days
202586AQI
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
June69AQI
202475AQI
Highest AQI recorded in
October99AQI
Lowest AQI recorded in
January50AQI
202353AQI
Highest AQI recorded in
November55AQI
Lowest AQI recorded in
December52AQI
202283AQI
Highest AQI recorded in
January103AQI
Lowest AQI recorded in
July55AQI
202172AQI
Highest AQI recorded in
March151AQI
Lowest AQI recorded in
October1AQI
202095AQI
Highest AQI recorded in
October111AQI
Lowest AQI recorded in
May79AQI
Most & Least Polluted Years Over the Last 6 Years
Qian An Tangshan Dada Qian An Campus's annual 2025 AQI (86) shows an average percentage change of 17.9% (worsened AQI) compared to previous years: 2020 (95), 2021 (72), 2022 (83), 2023 (53), 2024 (75).