Sharpening Qiao, 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
Sharpening Qiao, Nanjing, Jiangsu, China
AQI Trends: Highest and Lowest
Same Day Analysis (27th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 60 of Moderate air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Sep - 29th Sep 2025
Sharpening Qiao, Nanjing, Jiangsu, China
5 AM28th Sep 2025
6 PM
4 AM29th Sep 2025
AQI
AQI
68AQI
46AQI
In the last 24 hours,
Sharpening Qiao's AQI reached its highest point of 68 at 4 AM during the Night, while the lowest point, 46, was recorded at 1 AM during the Night between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Sharpening Qiao, Nanjing, Jiangsu, China
29°C25/36°C
25°C24/30°C
25°C24/29°C
26°C23/31°C
28°C24/33°C
29°C25/33°C
30°C25/35°C
30°C26/34°C
29°C26/34°C
27°C22/33°C
23°C22/25°C
25°C22/29°C
25°C22/29°C
26°C23/30°C
25°C22/29°C
26°C24/30°C
29°C24/34°C
30°C26/36°C
27°C22/32°C
23°C20/26°C
24°C20/29°C
21°C19/25°C
21°C20/23°C
24°C20/29°C
26°C23/30°C
22°C21/22°C
23°C21/24°C
25°C22/29°C
25°C21/30°C
--°C/°C
--°C/°C
58AQI
53AQI
59AQI
56AQI
2025 Days Vs Air Quality
Sharpening Qiao, Nanjing, Jiangsu, China
11%
31
66%
179
21%
57
0.7%
2
0.3%
1
Total number of days with different AQI categories in last 271 days in 2025 (94 days remaining)
Under WHO’s Safe Air Quality Limits: 11%
Health Risk Level:
Extreme
In 2025, 11% of 271 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
Sharpening Qiao, Nanjing, Jiangsu, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
127AQI
144AQI
136AQI
143AQI
120AQI
120AQI
92AQI
116AQI
60AQI
86AQI
94AQI
85AQI
123AQI
135AQI
80AQI
99AQI
108AQI
128AQI
146AQI
145AQI
167AQI
165AQI
137AQI
103AQI
85AQI
115AQI
60AQI
88AQI
94AQI
102AQI
122AQI
76AQI
122AQI
112AQI
111AQI
89AQI
73AQI
63AQI
57AQI
70AQI
87AQI
87AQI
139AQI
108AQI
129AQI
108AQI
123AQI
85AQI
91AQI
98AQI
83AQI
91AQI
111AQI
117AQI
109AQI
142AQI
143AQI
144AQI
124AQI
110AQI
96AQI
73AQI
83AQI
91AQI
89AQI
110AQI
130AQI
109AQI
118AQI
130AQI
150AQI
103AQI
91AQI
78AQI
68AQI
66AQI
63AQI
81AQI
76AQI
71AQI
79AQI
98AQI
101AQI
94AQI
112AQI
120AQI
89AQI
109AQI
96AQI
76AQI
80AQI
93AQI
69AQI
107AQI
93AQI
88AQI
94AQI
105AQI
107AQI
125AQI
119AQI
278AQI
101AQI
89AQI
81AQI
82AQI
94AQI
99AQI
122AQI
81AQI
113AQI
93AQI
97AQI
93AQI
75AQI
66AQI
71AQI
76AQI
87AQI
85AQI
79AQI
79AQI
72AQI
63AQI
76AQI
101AQI
93AQI
76AQI
58AQI
61AQI
70AQI
75AQI
76AQI
99AQI
123AQI
80AQI
95AQI
86AQI
103AQI
81AQI
72AQI
84AQI
83AQI
97AQI
94AQI
88AQI
82AQI
84AQI
85AQI
85AQI
107AQI
55AQI
54AQI
74AQI
90AQI
73AQI
76AQI
54AQI
52AQI
59AQI
68AQI
71AQI
68AQI
61AQI
67AQI
49AQI
55AQI
59AQI
57AQI
47AQI
49AQI
44AQI
40AQI
47AQI
46AQI
52AQI
59AQI
51AQI
47AQI
47AQI
51AQI
54AQI
54AQI
59AQI
60AQI
64AQI
66AQI
63AQI
55AQI
53AQI
69AQI
63AQI
60AQI
64AQI
61AQI
63AQI
65AQI
59AQI
61AQI
59AQI
52AQI
49AQI
47AQI
47AQI
47AQI
54AQI
46AQI
49AQI
46AQI
51AQI
44AQI
40AQI
50AQI
48AQI
50AQI
55AQI
64AQI
56AQI
54AQI
51AQI
54AQI
48AQI
45AQI
50AQI
58AQI
49AQI
48AQI
53AQI
56AQI
57AQI
59AQI
57AQI
61AQI
56AQI
54AQI
56AQI
57AQI
53AQI
61AQI
62AQI
62AQI
57AQI
53AQI
59AQI
57AQI
61AQI
66AQI
69AQI
73AQI
75AQI
66AQI
53AQI
56AQI
59AQI
58AQI
55AQI
62AQI
55AQI
63AQI
54AQI
44AQI
54AQI
49AQI
57AQI
52AQI
59AQI
49AQI
39AQI
34AQI
60AQI
114AQI
103AQI
95AQI
99AQI
84AQI
57AQI
56AQI
55AQI
57AQI
No. of days
202580AQI
Highest AQI recorded in
January114AQI
Lowest AQI recorded in
August55AQI
202480AQI
Highest AQI recorded in
January122AQI
Lowest AQI recorded in
July41AQI
202380AQI
Highest AQI recorded in
December110AQI
Lowest AQI recorded in
July42AQI
202282AQI
Highest AQI recorded in
January129AQI
Lowest AQI recorded in
July47AQI
202186AQI
Highest AQI recorded in
January118AQI
Lowest AQI recorded in
July49AQI
202083AQI
Highest AQI recorded in
December129AQI
Lowest AQI recorded in
August62AQI
Most & Least Polluted Years Over the Last 6 Years
Sharpening Qiao's annual 2025 AQI (80) shows an average percentage change of -2.2% (improved AQI) compared to previous years: 2020 (83), 2021 (86), 2022 (82), 2023 (80), 2024 (80).