Longba, Gansu, 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
Longba, Gansu, China
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 32 of Good air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Sep - 29th Sep 2025
Longba, Gansu, China
6 AM28th Sep 2025
7 PM
5 AM29th Sep 2025
32AQI
19AQI
56AQI
30AQI
In the last 24 hours,
Longba's AQI reached its highest point of 56 at 4 AM during the Night, while the lowest point, 19, was recorded at 6 AM during the Day between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Longba, Gansu, China
14°C12/18°C
17°C11/25°C
17°C13/24°C
16°C15/19°C
18°C14/24°C
18°C16/20°C
15°C12/16°C
15°C10/22°C
15°C12/20°C
18°C14/24°C
18°C13/24°C
18°C15/21°C
17°C15/18°C
19°C15/26°C
19°C15/24°C
20°C17/24°C
20°C17/24°C
18°C16/22°C
14°C12/15°C
12°C11/12°C
14°C8/20°C
12°C10/13°C
11°C11/12°C
14°C10/20°C
15°C12/20°C
14°C11/20°C
15°C11/20°C
14°C13/15°C
13°C13/14°C
13°C11/14°C
--°C/°C
48AQI
39AQI
52AQI
49AQI
2025 Days Vs Air Quality
Longba, Gansu, China
24%
64
58%
158
17%
45
1%
3
0.3%
1
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 24%
Health Risk Level:
Very high
In 2025, 24% of 272 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Longba, Gansu, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
124AQI
114AQI
129AQI
129AQI
133AQI
136AQI
124AQI
111AQI
110AQI
107AQI
98AQI
103AQI
114AQI
94AQI
97AQI
102AQI
117AQI
111AQI
109AQI
116AQI
130AQI
135AQI
158AQI
142AQI
101AQI
104AQI
93AQI
104AQI
136AQI
135AQI
116AQI
111AQI
93AQI
81AQI
91AQI
82AQI
79AQI
74AQI
80AQI
86AQI
91AQI
95AQI
87AQI
89AQI
82AQI
89AQI
81AQI
81AQI
85AQI
97AQI
116AQI
138AQI
123AQI
115AQI
105AQI
92AQI
91AQI
91AQI
96AQI
116AQI
88AQI
86AQI
65AQI
65AQI
68AQI
70AQI
78AQI
76AQI
79AQI
121AQI
127AQI
91AQI
82AQI
76AQI
68AQI
72AQI
67AQI
69AQI
74AQI
74AQI
82AQI
78AQI
83AQI
76AQI
86AQI
134AQI
95AQI
98AQI
80AQI
76AQI
79AQI
95AQI
86AQI
98AQI
96AQI
87AQI
84AQI
87AQI
88AQI
87AQI
89AQI
619AQI
178AQI
180AQI
105AQI
101AQI
87AQI
112AQI
125AQI
93AQI
110AQI
112AQI
99AQI
78AQI
78AQI
71AQI
68AQI
65AQI
68AQI
62AQI
68AQI
72AQI
91AQI
88AQI
78AQI
86AQI
68AQI
80AQI
91AQI
75AQI
80AQI
80AQI
72AQI
74AQI
73AQI
88AQI
98AQI
92AQI
109AQI
101AQI
103AQI
97AQI
81AQI
77AQI
71AQI
78AQI
65AQI
65AQI
60AQI
64AQI
58AQI
48AQI
52AQI
57AQI
58AQI
60AQI
65AQI
60AQI
58AQI
59AQI
58AQI
59AQI
66AQI
69AQI
65AQI
69AQI
67AQI
67AQI
59AQI
61AQI
62AQI
58AQI
54AQI
51AQI
53AQI
51AQI
49AQI
51AQI
54AQI
55AQI
46AQI
44AQI
41AQI
44AQI
47AQI
43AQI
44AQI
45AQI
44AQI
45AQI
48AQI
49AQI
57AQI
57AQI
56AQI
59AQI
59AQI
60AQI
53AQI
54AQI
50AQI
49AQI
51AQI
46AQI
43AQI
46AQI
47AQI
46AQI
50AQI
54AQI
47AQI
54AQI
56AQI
57AQI
59AQI
59AQI
56AQI
55AQI
52AQI
50AQI
47AQI
47AQI
47AQI
49AQI
50AQI
53AQI
53AQI
46AQI
45AQI
46AQI
52AQI
54AQI
46AQI
47AQI
43AQI
44AQI
43AQI
50AQI
48AQI
43AQI
42AQI
45AQI
42AQI
48AQI
50AQI
54AQI
40AQI
45AQI
53AQI
55AQI
52AQI
51AQI
54AQI
48AQI
47AQI
47AQI
47AQI
51AQI
46AQI
48AQI
42AQI
43AQI
42AQI
42AQI
47AQI
42AQI
44AQI
42AQI
50AQI
38AQI
32AQI
117AQI
94AQI
84AQI
113AQI
80AQI
58AQI
49AQI
49AQI
46AQI
No. of days
202577AQI
Highest AQI recorded in
January117AQI
Lowest AQI recorded in
September46AQI
202475AQI
Highest AQI recorded in
February115AQI
Lowest AQI recorded in
July49AQI
202391AQI
Highest AQI recorded in
January137AQI
Lowest AQI recorded in
September46AQI
202288AQI
Highest AQI recorded in
January126AQI
Lowest AQI recorded in
July57AQI
202181AQI
Highest AQI recorded in
January125AQI
Lowest AQI recorded in
September50AQI
202060AQI
Highest AQI recorded in
December88AQI
Lowest AQI recorded in
August42AQI
Most & Least Polluted Years Over the Last 6 Years
Longba's annual 2025 AQI (77) shows an average percentage change of -0.4% (improved AQI) compared to previous years: 2020 (60), 2021 (81), 2022 (88), 2023 (91), 2024 (75).