No 4 Street, Hangu, Tianjin, 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
No 4 Street, Hangu, Tianjin, China
AQI Trends: Highest and Lowest
Same Day Analysis (5th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 119 of Poor air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Oct - 6th Oct 2025
No 4 Street, Hangu, Tianjin, China
5 AM5th Oct 2025
6 PM
4 AM6th Oct 2025
117AQI
43AQI
139AQI
32AQI
In the last 24 hours,
No 4 Street's AQI reached its highest point of 139 at 5 AM during the Night, while the lowest point, 32, was recorded at 10 PM during the Night between 5th Oct and 6th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
No 4 Street, Hangu, Tianjin, China
25°C21/30°C
26°C22/30°C
26°C23/29°C
26°C22/30°C
27°C24/30°C
27°C25/29°C
25°C23/28°C
26°C23/29°C
26°C23/30°C
26°C24/28°C
24°C22/27°C
21°C19/23°C
21°C17/25°C
19°C17/20°C
21°C16/26°C
23°C21/25°C
21°C19/21°C
20°C19/22°C
22°C16/27°C
24°C20/28°C
24°C22/27°C
21°C19/22°C
23°C19/27°C
25°C21/28°C
25°C21/28°C
25°C22/28°C
23°C21/25°C
21°C20/22°C
22°C20/24°C
19°C14/21°C
--°C/°C
95AQI
64AQI
85AQI
71AQI
2025 Days Vs Air Quality
No 4 Street, Hangu, Tianjin, China
4%
10
72%
199
22%
62
3%
7
Total number of days with different AQI categories in last 279 days in 2025 (86 days remaining)
Under WHO’s Safe Air Quality Limits: 4%
Health Risk Level:
Extreme
In 2025, 4% of 279 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
No 4 Street, Hangu, Tianjin, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
99AQI
73AQI
85AQI
142AQI
112AQI
75AQI
69AQI
43AQI
45AQI
58AQI
75AQI
70AQI
112AQI
56AQI
79AQI
63AQI
101AQI
139AQI
103AQI
145AQI
103AQI
108AQI
100AQI
143AQI
150AQI
122AQI
67AQI
91AQI
176AQI
95AQI
119AQI
110AQI
114AQI
56AQI
65AQI
52AQI
68AQI
40AQI
46AQI
65AQI
127AQI
141AQI
92AQI
149AQI
144AQI
154AQI
92AQI
78AQI
92AQI
71AQI
82AQI
67AQI
91AQI
49AQI
94AQI
80AQI
116AQI
150AQI
178AQI
179AQI
106AQI
93AQI
110AQI
139AQI
93AQI
100AQI
146AQI
155AQI
169AQI
171AQI
98AQI
134AQI
84AQI
97AQI
62AQI
65AQI
60AQI
83AQI
57AQI
69AQI
71AQI
118AQI
84AQI
79AQI
121AQI
63AQI
84AQI
51AQI
74AQI
99AQI
80AQI
58AQI
95AQI
111AQI
50AQI
116AQI
92AQI
85AQI
102AQI
107AQI
137AQI
96AQI
92AQI
71AQI
80AQI
118AQI
104AQI
75AQI
100AQI
103AQI
138AQI
74AQI
101AQI
48AQI
76AQI
103AQI
65AQI
78AQI
91AQI
103AQI
69AQI
78AQI
55AQI
81AQI
99AQI
83AQI
106AQI
107AQI
74AQI
71AQI
101AQI
99AQI
105AQI
78AQI
82AQI
122AQI
67AQI
98AQI
112AQI
127AQI
97AQI
138AQI
109AQI
91AQI
103AQI
107AQI
100AQI
117AQI
112AQI
104AQI
116AQI
105AQI
84AQI
48AQI
62AQI
71AQI
86AQI
63AQI
63AQI
76AQI
61AQI
68AQI
71AQI
80AQI
73AQI
61AQI
49AQI
65AQI
69AQI
65AQI
64AQI
62AQI
53AQI
61AQI
69AQI
64AQI
72AQI
70AQI
80AQI
87AQI
77AQI
69AQI
70AQI
57AQI
71AQI
66AQI
60AQI
63AQI
60AQI
61AQI
69AQI
74AQI
74AQI
70AQI
64AQI
64AQI
64AQI
59AQI
62AQI
60AQI
70AQI
67AQI
63AQI
63AQI
66AQI
69AQI
67AQI
64AQI
68AQI
57AQI
58AQI
57AQI
62AQI
61AQI
62AQI
60AQI
64AQI
69AQI
71AQI
60AQI
65AQI
63AQI
65AQI
66AQI
62AQI
70AQI
68AQI
56AQI
61AQI
60AQI
62AQI
62AQI
59AQI
53AQI
57AQI
59AQI
58AQI
63AQI
60AQI
51AQI
62AQI
58AQI
59AQI
61AQI
71AQI
78AQI
79AQI
74AQI
66AQI
68AQI
70AQI
73AQI
70AQI
75AQI
79AQI
80AQI
79AQI
88AQI
70AQI
53AQI
53AQI
63AQI
72AQI
78AQI
70AQI
75AQI
87AQI
87AQI
94AQI
107AQI
98AQI
93AQI
108AQI
136AQI
101AQI
46AQI
102AQI
119AQI
97AQI
95AQI
100AQI
92AQI
97AQI
69AQI
65AQI
62AQI
77AQI
101AQI
No. of days
202584AQI
Highest AQI recorded in
October101AQI
Lowest AQI recorded in
August62AQI
202495AQI
Highest AQI recorded in
March123AQI
Lowest AQI recorded in
September65AQI
2023100AQI
Highest AQI recorded in
March141AQI
Lowest AQI recorded in
July69AQI
202296AQI
Highest AQI recorded in
November118AQI
Lowest AQI recorded in
August37AQI
202198AQI
Highest AQI recorded in
March166AQI
Lowest AQI recorded in
July68AQI
2020107AQI
Highest AQI recorded in
October120AQI
Lowest AQI recorded in
September90AQI
Most & Least Polluted Years Over the Last 6 Years
No 4 Street's annual 2025 AQI (84) shows an average percentage change of -15.1% (improved AQI) compared to previous years: 2020 (107), 2021 (98), 2022 (96), 2023 (100), 2024 (95).