Suqian, Jiangsu, 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
Suqian, Jiangsu, China
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 54 of Moderate air quality, showing improvement over 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Sep - 19th Sep 2025
Suqian, Jiangsu, China
5 AM18th Sep 2025
6 PM
4 AM19th Sep 2025
AQI
AQI
59AQI
23AQI
In the last 24 hours,
Suqian's AQI reached its highest point of 59 at 1 AM during the Night, while the lowest point, 23, was recorded at 9 AM during the Night between 18th Sep and 19th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Suqian, Jiangsu, China
31°C26/36°C
30°C27/35°C
30°C26/36°C
29°C25/35°C
29°C24/35°C
27°C24/31°C
26°C24/31°C
27°C23/33°C
30°C25/36°C
29°C24/35°C
27°C24/32°C
25°C21/30°C
25°C21/30°C
24°C21/28°C
25°C22/30°C
26°C22/30°C
27°C23/33°C
26°C24/30°C
26°C23/30°C
21°C18/25°C
22°C19/26°C
24°C18/29°C
21°C20/23°C
21°C19/23°C
23°C20/27°C
25°C20/29°C
26°C24/29°C
27°C23/33°C
21°C19/23°C
--°C/°C
--°C/°C
68AQI
54AQI
61AQI
58AQI
2025 Days Vs Air Quality
Suqian, Jiangsu, China
2%
5
61%
159
27%
71
10%
25
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 2%
Health Risk Level:
Extreme
In 2025, 2% of 261 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
Suqian, Jiangsu, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
156AQI
178AQI
139AQI
163AQI
172AQI
116AQI
127AQI
114AQI
89AQI
95AQI
132AQI
141AQI
153AQI
166AQI
102AQI
151AQI
146AQI
164AQI
177AQI
185AQI
188AQI
155AQI
135AQI
101AQI
126AQI
140AQI
79AQI
125AQI
140AQI
153AQI
155AQI
143AQI
162AQI
154AQI
133AQI
103AQI
110AQI
66AQI
80AQI
92AQI
112AQI
139AQI
139AQI
117AQI
157AQI
118AQI
150AQI
95AQI
114AQI
106AQI
96AQI
100AQI
114AQI
103AQI
114AQI
131AQI
152AQI
164AQI
175AQI
159AQI
92AQI
104AQI
117AQI
139AQI
124AQI
148AQI
150AQI
151AQI
149AQI
164AQI
172AQI
120AQI
100AQI
101AQI
78AQI
90AQI
71AQI
94AQI
106AQI
95AQI
103AQI
127AQI
132AQI
122AQI
135AQI
118AQI
127AQI
90AQI
110AQI
100AQI
106AQI
94AQI
92AQI
131AQI
99AQI
102AQI
98AQI
119AQI
133AQI
113AQI
136AQI
195AQI
103AQI
85AQI
79AQI
79AQI
108AQI
122AQI
133AQI
97AQI
103AQI
99AQI
104AQI
82AQI
75AQI
78AQI
85AQI
77AQI
84AQI
83AQI
86AQI
91AQI
73AQI
78AQI
82AQI
102AQI
98AQI
87AQI
57AQI
63AQI
79AQI
72AQI
86AQI
116AQI
121AQI
98AQI
103AQI
83AQI
108AQI
107AQI
96AQI
96AQI
115AQI
101AQI
96AQI
107AQI
98AQI
100AQI
96AQI
97AQI
117AQI
73AQI
73AQI
83AQI
93AQI
83AQI
92AQI
82AQI
78AQI
76AQI
75AQI
74AQI
71AQI
82AQI
73AQI
62AQI
67AQI
66AQI
69AQI
61AQI
58AQI
64AQI
75AQI
73AQI
71AQI
71AQI
82AQI
70AQI
63AQI
57AQI
60AQI
63AQI
56AQI
63AQI
61AQI
65AQI
65AQI
71AQI
56AQI
64AQI
77AQI
76AQI
71AQI
73AQI
60AQI
73AQI
74AQI
64AQI
68AQI
66AQI
59AQI
58AQI
57AQI
56AQI
57AQI
60AQI
53AQI
57AQI
49AQI
55AQI
51AQI
50AQI
51AQI
45AQI
55AQI
59AQI
59AQI
66AQI
62AQI
59AQI
60AQI
53AQI
47AQI
50AQI
56AQI
55AQI
56AQI
57AQI
60AQI
63AQI
63AQI
61AQI
63AQI
62AQI
60AQI
60AQI
60AQI
62AQI
64AQI
63AQI
65AQI
63AQI
57AQI
52AQI
56AQI
58AQI
55AQI
60AQI
66AQI
74AQI
63AQI
62AQI
58AQI
59AQI
54AQI
62AQI
62AQI
66AQI
61AQI
54AQI
141AQI
123AQI
119AQI
103AQI
94AQI
73AQI
62AQI
59AQI
60AQI
No. of days
202594AQI
Highest AQI recorded in
January141AQI
Lowest AQI recorded in
August59AQI
202497AQI
Highest AQI recorded in
January139AQI
Lowest AQI recorded in
July60AQI
2023105AQI
Highest AQI recorded in
January138AQI
Lowest AQI recorded in
July69AQI
2022100AQI
Highest AQI recorded in
January154AQI
Lowest AQI recorded in
July65AQI
2021101AQI
Highest AQI recorded in
January149AQI
Lowest AQI recorded in
July52AQI
202092AQI
Highest AQI recorded in
December157AQI
Lowest AQI recorded in
July53AQI
Most & Least Polluted Years Over the Last 6 Years
Suqian's annual 2025 AQI (94) shows an average percentage change of -5.005% (improved AQI) compared to previous years: 2020 (92), 2021 (101), 2022 (100), 2023 (105), 2024 (97).