Yancheng, 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
Yancheng, Jiangsu, China
AQI Trends: Highest and Lowest
Same Day Analysis (27th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 18 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Day & Night AQI Trend: 26th Sep - 27th Sep 2026
Yancheng, Jiangsu, China
5 AM26th Sep 2026
6 PM
4 AM27th Sep 2026
29AQI
15AQI
29AQI
14AQI
In the last 24 hours,
Yancheng's AQI reached its highest point of 29 at 4 PM during the Day, while the lowest point, 14, was recorded at 7 PM during the Night between 26th Sep and 27th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Yancheng, Jiangsu, China
27°C25/32°C
27°C25/31°C
24°C24/25°C
24°C22/25°C
23°C21/25°C
24°C21/26°C
23°C20/28°C
24°C20/28°C
23°C20/28°C
23°C19/28°C
22°C19/28°C
21°C18/24°C
21°C17/24°C
21°C18/24°C
21°C17/26°C
22°C18/28°C
22°C18/28°C
21°C16/26°C
22°C17/28°C
22°C20/24°C
23°C20/27°C
23°C21/27°C
24°C21/29°C
22°C20/23°C
22°C20/27°C
23°C20/29°C
22°C20/25°C
23°C21/29°C
23°C21/26°C
22°C21/25°C
42AQI
33AQI
36AQI
33AQI
2026 Days Vs Air Quality
Yancheng, Jiangsu, China
40%
109
36%
98
19%
51
4%
12
Total number of days with different AQI categories in last 270 days in 2026 (95 days remaining)
Under WHO’s Safe Air Quality Limits: 40%
Health Risk Level:
Significant
In 2026, 40% of 270 days were within WHO’s safe air quality limits, and 60% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Yancheng, Jiangsu, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
53AQI (US)
62AQI (US)
99AQI (US)
149AQI (US)
156AQI (US)
143AQI (US)
139AQI (US)
117AQI (US)
132AQI (US)
111AQI (US)
55AQI (US)
88AQI (US)
162AQI (US)
171AQI (US)
176AQI (US)
192AQI (US)
111AQI (US)
55AQI (US)
45AQI (US)
62AQI (US)
73AQI (US)
103AQI (US)
137AQI (US)
160AQI (US)
122AQI (US)
56AQI (US)
97AQI (US)
104AQI (US)
66AQI (US)
63AQI (US)
74AQI (US)
133AQI (US)
143AQI (US)
147AQI (US)
155AQI (US)
169AQI (US)
74AQI (US)
72AQI (US)
75AQI (US)
97AQI (US)
118AQI (US)
146AQI (US)
164AQI (US)
163AQI (US)
152AQI (US)
136AQI (US)
59AQI (US)
124AQI (US)
143AQI (US)
135AQI (US)
119AQI (US)
110AQI (US)
80AQI (US)
46AQI (US)
45AQI (US)
77AQI (US)
40AQI (US)
49AQI (US)
83AQI (US)
63AQI (US)
43AQI (US)
121AQI (US)
71AQI (US)
64AQI (US)
108AQI (US)
76AQI (US)
43AQI (US)
87AQI (US)
96AQI (US)
86AQI (US)
103AQI (US)
145AQI (US)
98AQI (US)
99AQI (US)
124AQI (US)
117AQI (US)
87AQI (US)
94AQI (US)
117AQI (US)
101AQI (US)
125AQI (US)
110AQI (US)
127AQI (US)
137AQI (US)
133AQI (US)
112AQI (US)
130AQI (US)
124AQI (US)
107AQI (US)
144AQI (US)
158AQI (US)
148AQI (US)
117AQI (US)
99AQI (US)
114AQI (US)
102AQI (US)
40AQI (US)
44AQI (US)
76AQI (US)
126AQI (US)
132AQI (US)
85AQI (US)
52AQI (US)
102AQI (US)
82AQI (US)
105AQI (US)
60AQI (US)
49AQI (US)
62AQI (US)
54AQI (US)
66AQI (US)
49AQI (US)
37AQI (US)
74AQI (US)
82AQI (US)
97AQI (US)
135AQI (US)
66AQI (US)
76AQI (US)
94AQI (US)
82AQI (US)
111AQI (US)
74AQI (US)
44AQI (US)
80AQI (US)
79AQI (US)
89AQI (US)
38AQI (US)
58AQI (US)
68AQI (US)
93AQI (US)
53AQI (US)
68AQI (US)
38AQI (US)
40AQI (US)
76AQI (US)
63AQI (US)
55AQI (US)
52AQI (US)
62AQI (US)
68AQI (US)
79AQI (US)
72AQI (US)
71AQI (US)
65AQI (US)
44AQI (US)
71AQI (US)
90AQI (US)
55AQI (US)
64AQI (US)
59AQI (US)
59AQI (US)
45AQI (US)
43AQI (US)
69AQI (US)
42AQI (US)
42AQI (US)
45AQI (US)
54AQI (US)
35AQI (US)
63AQI (US)
63AQI (US)
93AQI (US)
114AQI (US)
38AQI (US)
27AQI (US)
38AQI (US)
23AQI (US)
46AQI (US)
35AQI (US)
23AQI (US)
69AQI (US)
33AQI (US)
14AQI (US)
22AQI (US)
47AQI (US)
53AQI (US)
39AQI (US)
74AQI (US)
64AQI (US)
46AQI (US)
41AQI (US)
64AQI (US)
38AQI (US)
35AQI (US)
14AQI (US)
19AQI (US)
37AQI (US)
27AQI (US)
50AQI (US)
63AQI (US)
33AQI (US)
40AQI (US)
26AQI (US)
43AQI (US)
74AQI (US)
65AQI (US)
59AQI (US)
19AQI (US)
28AQI (US)
30AQI (US)
28AQI (US)
32AQI (US)
32AQI (US)
43AQI (US)
49AQI (US)
53AQI (US)
60AQI (US)
32AQI (US)
47AQI (US)
49AQI (US)
51AQI (US)
58AQI (US)
86AQI (US)
57AQI (US)
48AQI (US)
50AQI (US)
31AQI (US)
41AQI (US)
46AQI (US)
28AQI (US)
26AQI (US)
29AQI (US)
31AQI (US)
30AQI (US)
30AQI (US)
31AQI (US)
30AQI (US)
40AQI (US)
26AQI (US)
32AQI (US)
23AQI (US)
33AQI (US)
31AQI (US)
32AQI (US)
34AQI (US)
30AQI (US)
32AQI (US)
41AQI (US)
32AQI (US)
29AQI (US)
34AQI (US)
30AQI (US)
32AQI (US)
26AQI (US)
27AQI (US)
29AQI (US)
30AQI (US)
27AQI (US)
33AQI (US)
33AQI (US)
36AQI (US)
28AQI (US)
31AQI (US)
32AQI (US)
37AQI (US)
47AQI (US)
45AQI (US)
66AQI (US)
51AQI (US)
33AQI (US)
30AQI (US)
39AQI (US)
63AQI (US)
55AQI (US)
49AQI (US)
35AQI (US)
55AQI (US)
21AQI (US)
18AQI (US)
108AQI (US)
109AQI (US)
103AQI (US)
86AQI (US)
66AQI (US)
49AQI (US)
41AQI (US)
36AQI (US)
37AQI (US)
No. of days
202671AQI (US)
Highest AQI (US) recorded in
February109AQI (US)
Lowest AQI (US) recorded in
August36AQI (US)
202585AQI (US)
Highest AQI (US) recorded in
January116AQI (US)
Lowest AQI (US) recorded in
September57AQI (US)
202481AQI (US)
Highest AQI (US) recorded in
January120AQI (US)
Lowest AQI (US) recorded in
September41AQI (US)
202383AQI (US)
Highest AQI (US) recorded in
December117AQI (US)
Lowest AQI (US) recorded in
August54AQI (US)
202284AQI (US)
Highest AQI (US) recorded in
January122AQI (US)
Lowest AQI (US) recorded in
August50AQI (US)
202186AQI (US)
Highest AQI (US) recorded in
January122AQI (US)
Lowest AQI (US) recorded in
July50AQI (US)
202083AQI (US)
Highest AQI (US) recorded in
December123AQI (US)
Lowest AQI (US) recorded in
July60AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Yancheng's annual 2026 AQI (US) (71) shows an average percentage change of -15.1% (improved AQI (US)) compared to previous years: 2020 (83), 2021 (86), 2022 (84), 2023 (83), 2024 (81), 2025 (85).