Nanjing, 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
Nanjing, Jiangsu, China
AQI Trends: Highest and Lowest
Same Day Analysis (28th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 36 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Day & Night AQI Trend: 27th Sep - 28th Sep 2026
Nanjing, Jiangsu, China
5 AM27th Sep 2026
6 PM
4 AM28th Sep 2026
45AQI
9AQI
56AQI
10AQI
In the last 24 hours,
Nanjing's AQI reached its highest point of 56 at 4 AM during the Night, while the lowest point, 9, was recorded at 5 PM during the Day between 27th Sep and 28th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Nanjing, Jiangsu, China
28°C25/32°C
24°C23/25°C
23°C22/25°C
23°C22/26°C
24°C23/26°C
24°C21/29°C
24°C21/29°C
24°C20/30°C
24°C20/29°C
24°C20/29°C
22°C19/26°C
21°C17/26°C
20°C18/24°C
23°C20/27°C
24°C20/29°C
23°C20/27°C
22°C18/27°C
23°C18/27°C
21°C20/22°C
22°C20/25°C
24°C22/28°C
23°C22/25°C
23°C22/23°C
22°C21/23°C
23°C22/26°C
24°C22/27°C
26°C21/32°C
22°C21/24°C
23°C22/25°C
21°C20/22°C
54AQI
35AQI
55AQI
40AQI
2026 Days Vs Air Quality
Nanjing, Jiangsu, China
42%
115
40%
108
15%
42
2%
6
Total number of days with different AQI categories in last 271 days in 2026 (94 days remaining)
Under WHO’s Safe Air Quality Limits: 42%
Health Risk Level:
Significant
In 2026, 42% of 271 days were within WHO’s safe air quality limits, and 58% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Nanjing, Jiangsu, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
45AQI (US)
102AQI (US)
96AQI (US)
156AQI (US)
161AQI (US)
147AQI (US)
80AQI (US)
123AQI (US)
124AQI (US)
108AQI (US)
64AQI (US)
79AQI (US)
122AQI (US)
129AQI (US)
135AQI (US)
157AQI (US)
167AQI (US)
121AQI (US)
41AQI (US)
69AQI (US)
93AQI (US)
74AQI (US)
114AQI (US)
147AQI (US)
151AQI (US)
51AQI (US)
74AQI (US)
101AQI (US)
88AQI (US)
55AQI (US)
47AQI (US)
89AQI (US)
111AQI (US)
137AQI (US)
107AQI (US)
138AQI (US)
70AQI (US)
55AQI (US)
79AQI (US)
58AQI (US)
90AQI (US)
114AQI (US)
115AQI (US)
127AQI (US)
112AQI (US)
123AQI (US)
55AQI (US)
87AQI (US)
120AQI (US)
127AQI (US)
94AQI (US)
64AQI (US)
78AQI (US)
70AQI (US)
48AQI (US)
72AQI (US)
47AQI (US)
23AQI (US)
63AQI (US)
63AQI (US)
29AQI (US)
108AQI (US)
83AQI (US)
88AQI (US)
105AQI (US)
89AQI (US)
64AQI (US)
120AQI (US)
97AQI (US)
114AQI (US)
123AQI (US)
113AQI (US)
126AQI (US)
107AQI (US)
85AQI (US)
96AQI (US)
91AQI (US)
131AQI (US)
160AQI (US)
126AQI (US)
112AQI (US)
98AQI (US)
119AQI (US)
130AQI (US)
125AQI (US)
80AQI (US)
66AQI (US)
71AQI (US)
67AQI (US)
102AQI (US)
142AQI (US)
113AQI (US)
79AQI (US)
68AQI (US)
95AQI (US)
94AQI (US)
66AQI (US)
37AQI (US)
53AQI (US)
77AQI (US)
105AQI (US)
33AQI (US)
46AQI (US)
64AQI (US)
64AQI (US)
66AQI (US)
87AQI (US)
73AQI (US)
40AQI (US)
68AQI (US)
56AQI (US)
20AQI (US)
19AQI (US)
44AQI (US)
74AQI (US)
65AQI (US)
89AQI (US)
53AQI (US)
38AQI (US)
59AQI (US)
50AQI (US)
68AQI (US)
55AQI (US)
28AQI (US)
46AQI (US)
48AQI (US)
73AQI (US)
28AQI (US)
33AQI (US)
58AQI (US)
71AQI (US)
88AQI (US)
91AQI (US)
75AQI (US)
41AQI (US)
75AQI (US)
62AQI (US)
55AQI (US)
52AQI (US)
63AQI (US)
68AQI (US)
79AQI (US)
72AQI (US)
71AQI (US)
65AQI (US)
44AQI (US)
32AQI (US)
44AQI (US)
56AQI (US)
59AQI (US)
69AQI (US)
59AQI (US)
99AQI (US)
104AQI (US)
69AQI (US)
36AQI (US)
28AQI (US)
45AQI (US)
47AQI (US)
46AQI (US)
53AQI (US)
66AQI (US)
78AQI (US)
54AQI (US)
44AQI (US)
29AQI (US)
36AQI (US)
47AQI (US)
89AQI (US)
56AQI (US)
19AQI (US)
54AQI (US)
19AQI (US)
10AQI (US)
22AQI (US)
35AQI (US)
68AQI (US)
74AQI (US)
95AQI (US)
89AQI (US)
28AQI (US)
41AQI (US)
33AQI (US)
14AQI (US)
28AQI (US)
9AQI (US)
15AQI (US)
22AQI (US)
18AQI (US)
17AQI (US)
42AQI (US)
29AQI (US)
19AQI (US)
17AQI (US)
46AQI (US)
39AQI (US)
18AQI (US)
35AQI (US)
44AQI (US)
48AQI (US)
38AQI (US)
35AQI (US)
30AQI (US)
35AQI (US)
36AQI (US)
49AQI (US)
28AQI (US)
36AQI (US)
30AQI (US)
39AQI (US)
22AQI (US)
30AQI (US)
27AQI (US)
42AQI (US)
60AQI (US)
56AQI (US)
69AQI (US)
44AQI (US)
41AQI (US)
44AQI (US)
21AQI (US)
22AQI (US)
28AQI (US)
29AQI (US)
34AQI (US)
37AQI (US)
26AQI (US)
34AQI (US)
49AQI (US)
66AQI (US)
43AQI (US)
23AQI (US)
29AQI (US)
27AQI (US)
30AQI (US)
27AQI (US)
30AQI (US)
32AQI (US)
55AQI (US)
28AQI (US)
28AQI (US)
34AQI (US)
27AQI (US)
24AQI (US)
24AQI (US)
27AQI (US)
28AQI (US)
33AQI (US)
31AQI (US)
34AQI (US)
35AQI (US)
40AQI (US)
31AQI (US)
48AQI (US)
28AQI (US)
57AQI (US)
66AQI (US)
48AQI (US)
85AQI (US)
94AQI (US)
44AQI (US)
68AQI (US)
35AQI (US)
90AQI (US)
72AQI (US)
71AQI (US)
67AQI (US)
78AQI (US)
35AQI (US)
20AQI (US)
36AQI (US)
104AQI (US)
88AQI (US)
100AQI (US)
66AQI (US)
59AQI (US)
53AQI (US)
30AQI (US)
37AQI (US)
48AQI (US)
No. of days
202665AQI (US)
Highest AQI (US) recorded in
January104AQI (US)
Lowest AQI (US) recorded in
July30AQI (US)
202583AQI (US)
Highest AQI (US) recorded in
January116AQI (US)
Lowest AQI (US) recorded in
July54AQI (US)
202481AQI (US)
Highest AQI (US) recorded in
January123AQI (US)
Lowest AQI (US) recorded in
July41AQI (US)
202383AQI (US)
Highest AQI (US) recorded in
December114AQI (US)
Lowest AQI (US) recorded in
July44AQI (US)
202284AQI (US)
Highest AQI (US) recorded in
January126AQI (US)
Lowest AQI (US) recorded in
July52AQI (US)
202185AQI (US)
Highest AQI (US) recorded in
January120AQI (US)
Lowest AQI (US) recorded in
July51AQI (US)
202081AQI (US)
Highest AQI (US) recorded in
December130AQI (US)
Lowest AQI (US) recorded in
August59AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Nanjing's annual 2026 AQI (US) (65) shows an average percentage change of -21.5% (improved AQI (US)) compared to previous years: 2020 (81), 2021 (85), 2022 (84), 2023 (83), 2024 (81), 2025 (83).