BDA, Dalian, Liaoning, 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
BDA, Dalian, Liaoning, China
AQI Trends: Highest and Lowest
Same Day Analysis (30th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 39 of Good air quality, showing improvement over 2025, 2024 and 2022 on the same day.
Day & Night AQI Trend: 29th Sep - 30th Sep 2026
BDA, Dalian, Liaoning, China
5 AM29th Sep 2026
6 PM
4 AM30th Sep 2026
110AQI
27AQI
119AQI
54AQI
In the last 24 hours,
BDA's AQI reached its highest point of 119 at 9 PM during the Night, while the lowest point, 27, was recorded at 11 AM during the Day between 29th Sep and 30th Sep 2026.
Day & Night AQI Trend : Sep 2026
BDA, Dalian, Liaoning, China
23°C21/26°C
24°C21/27°C
25°C21/28°C
25°C23/27°C
24°C23/26°C
24°C22/26°C
23°C19/27°C
20°C18/23°C
20°C18/23°C
21°C18/24°C
24°C21/27°C
24°C22/26°C
23°C22/25°C
21°C19/23°C
22°C20/24°C
23°C22/24°C
23°C22/24°C
22°C21/24°C
22°C21/24°C
23°C21/25°C
24°C20/27°C
23°C21/25°C
23°C21/25°C
23°C22/25°C
22°C21/23°C
21°C20/23°C
20°C18/22°C
19°C16/22°C
21°C19/23°C
18°C14/21°C
55AQI
34AQI
53AQI
39AQI
2026 Days Vs Air Quality
BDA, Dalian, Liaoning, China
34%
92
49%
134
12%
34
5%
13
Total number of days with different AQI categories in last 273 days in 2026 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 34%
Health Risk Level:
High
In 2026, 34% of 273 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
BDA, Dalian, Liaoning, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
58AQI (US)
61AQI (US)
138AQI (US)
98AQI (US)
65AQI (US)
106AQI (US)
35AQI (US)
64AQI (US)
121AQI (US)
85AQI (US)
36AQI (US)
75AQI (US)
56AQI (US)
61AQI (US)
148AQI (US)
133AQI (US)
56AQI (US)
75AQI (US)
42AQI (US)
54AQI (US)
50AQI (US)
68AQI (US)
86AQI (US)
84AQI (US)
60AQI (US)
95AQI (US)
73AQI (US)
68AQI (US)
48AQI (US)
67AQI (US)
125AQI (US)
117AQI (US)
56AQI (US)
116AQI (US)
158AQI (US)
125AQI (US)
53AQI (US)
66AQI (US)
49AQI (US)
115AQI (US)
132AQI (US)
111AQI (US)
150AQI (US)
159AQI (US)
158AQI (US)
71AQI (US)
43AQI (US)
114AQI (US)
63AQI (US)
104AQI (US)
144AQI (US)
144AQI (US)
72AQI (US)
38AQI (US)
54AQI (US)
64AQI (US)
110AQI (US)
157AQI (US)
162AQI (US)
175AQI (US)
172AQI (US)
162AQI (US)
153AQI (US)
133AQI (US)
47AQI (US)
57AQI (US)
101AQI (US)
49AQI (US)
45AQI (US)
81AQI (US)
125AQI (US)
126AQI (US)
98AQI (US)
150AQI (US)
148AQI (US)
139AQI (US)
64AQI (US)
68AQI (US)
97AQI (US)
133AQI (US)
147AQI (US)
163AQI (US)
168AQI (US)
163AQI (US)
153AQI (US)
90AQI (US)
59AQI (US)
101AQI (US)
100AQI (US)
75AQI (US)
88AQI (US)
72AQI (US)
130AQI (US)
77AQI (US)
87AQI (US)
22AQI (US)
32AQI (US)
48AQI (US)
41AQI (US)
94AQI (US)
78AQI (US)
85AQI (US)
87AQI (US)
130AQI (US)
145AQI (US)
135AQI (US)
94AQI (US)
97AQI (US)
52AQI (US)
56AQI (US)
73AQI (US)
85AQI (US)
73AQI (US)
105AQI (US)
90AQI (US)
81AQI (US)
56AQI (US)
36AQI (US)
76AQI (US)
95AQI (US)
106AQI (US)
86AQI (US)
49AQI (US)
42AQI (US)
46AQI (US)
75AQI (US)
54AQI (US)
26AQI (US)
58AQI (US)
55AQI (US)
62AQI (US)
48AQI (US)
61AQI (US)
44AQI (US)
35AQI (US)
77AQI (US)
64AQI (US)
56AQI (US)
53AQI (US)
63AQI (US)
67AQI (US)
79AQI (US)
72AQI (US)
69AQI (US)
65AQI (US)
43AQI (US)
40AQI (US)
52AQI (US)
47AQI (US)
46AQI (US)
76AQI (US)
58AQI (US)
58AQI (US)
52AQI (US)
38AQI (US)
20AQI (US)
40AQI (US)
44AQI (US)
40AQI (US)
50AQI (US)
53AQI (US)
56AQI (US)
69AQI (US)
64AQI (US)
95AQI (US)
45AQI (US)
59AQI (US)
70AQI (US)
66AQI (US)
39AQI (US)
40AQI (US)
28AQI (US)
46AQI (US)
49AQI (US)
52AQI (US)
28AQI (US)
40AQI (US)
52AQI (US)
58AQI (US)
38AQI (US)
61AQI (US)
52AQI (US)
34AQI (US)
87AQI (US)
68AQI (US)
35AQI (US)
60AQI (US)
58AQI (US)
27AQI (US)
39AQI (US)
47AQI (US)
26AQI (US)
41AQI (US)
36AQI (US)
28AQI (US)
53AQI (US)
87AQI (US)
65AQI (US)
62AQI (US)
87AQI (US)
77AQI (US)
42AQI (US)
41AQI (US)
38AQI (US)
27AQI (US)
44AQI (US)
62AQI (US)
56AQI (US)
67AQI (US)
51AQI (US)
66AQI (US)
70AQI (US)
59AQI (US)
64AQI (US)
68AQI (US)
50AQI (US)
36AQI (US)
68AQI (US)
78AQI (US)
41AQI (US)
50AQI (US)
23AQI (US)
33AQI (US)
36AQI (US)
55AQI (US)
79AQI (US)
58AQI (US)
48AQI (US)
66AQI (US)
61AQI (US)
65AQI (US)
80AQI (US)
28AQI (US)
12AQI (US)
26AQI (US)
27AQI (US)
49AQI (US)
27AQI (US)
37AQI (US)
50AQI (US)
52AQI (US)
63AQI (US)
53AQI (US)
14AQI (US)
48AQI (US)
51AQI (US)
43AQI (US)
48AQI (US)
31AQI (US)
45AQI (US)
43AQI (US)
32AQI (US)
39AQI (US)
54AQI (US)
60AQI (US)
51AQI (US)
19AQI (US)
27AQI (US)
23AQI (US)
31AQI (US)
33AQI (US)
40AQI (US)
66AQI (US)
28AQI (US)
36AQI (US)
65AQI (US)
74AQI (US)
61AQI (US)
33AQI (US)
77AQI (US)
39AQI (US)
90AQI (US)
39AQI (US)
77AQI (US)
104AQI (US)
114AQI (US)
81AQI (US)
59AQI (US)
50AQI (US)
53AQI (US)
50AQI (US)
45AQI (US)
No. of days
202670AQI (US)
Highest AQI (US) recorded in
March114AQI (US)
Lowest AQI (US) recorded in
September45AQI (US)
202578AQI (US)
Highest AQI (US) recorded in
March100AQI (US)
Lowest AQI (US) recorded in
August54AQI (US)
202479AQI (US)
Highest AQI (US) recorded in
February114AQI (US)
Lowest AQI (US) recorded in
September59AQI (US)
202385AQI (US)
Highest AQI (US) recorded in
March109AQI (US)
Lowest AQI (US) recorded in
August64AQI (US)
202275AQI (US)
Highest AQI (US) recorded in
March122AQI (US)
Lowest AQI (US) recorded in
June59AQI (US)
2021108AQI (US)
Highest AQI (US) recorded in
March128AQI (US)
Lowest AQI (US) recorded in
April92AQI (US)
202077AQI (US)
Highest AQI (US) recorded in
April100AQI (US)
Lowest AQI (US) recorded in
August55AQI (US)
Most & Least Polluted Years Over the Last 7 Years
BDA's annual 2026 AQI (US) (70) shows an average percentage change of -15.03% (improved AQI (US)) compared to previous years: 2020 (77), 2021 (108), 2022 (75), 2023 (85), 2024 (79), 2025 (78).