Lanzhou, Gansu, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Lanzhou, Gansu, China
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 64 of Moderate air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Lanzhou, Gansu, China
6 AM2nd Aug 2025
8 PM
5 AM3rd Aug 2025
AQI
AQI
76AQI
59AQI
In the last 24 hours,
Lanzhou's AQI reached its highest point of 76 at 12 PM during the Night, while the lowest point, 59, was recorded at 1 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Lanzhou, Gansu, China
15°C12/17°C
20°C13/26°C
21°C18/26°C
23°C15/32°C
19°C16/20°C
22°C15/29°C
26°C20/32°C
26°C21/33°C
25°C19/32°C
25°C19/32°C
26°C20/33°C
29°C21/34°C
28°C22/34°C
26°C20/34°C
24°C20/32°C
21°C16/24°C
22°C19/27°C
23°C18/29°C
25°C18/33°C
26°C21/32°C
20°C18/21°C
21°C17/28°C
25°C18/32°C
27°C20/33°C
27°C20/34°C
26°C19/33°C
27°C20/35°C
23°C18/28°C
24°C18/31°C
--°C/°C
--°C/°C
67AQI
63AQI
63AQI
63AQI
2025 Days Vs Air Quality
Lanzhou, Gansu, China
48%
103
44%
94
8%
16
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 214 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
Lanzhou, Gansu, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
141AQI
144AQI
149AQI
151AQI
166AQI
163AQI
129AQI
135AQI
132AQI
112AQI
126AQI
139AQI
146AQI
109AQI
137AQI
133AQI
144AQI
125AQI
155AQI
148AQI
153AQI
156AQI
165AQI
148AQI
115AQI
120AQI
132AQI
164AQI
175AQI
165AQI
150AQI
139AQI
113AQI
112AQI
103AQI
89AQI
91AQI
89AQI
102AQI
116AQI
115AQI
113AQI
122AQI
134AQI
95AQI
103AQI
94AQI
98AQI
86AQI
91AQI
93AQI
94AQI
89AQI
82AQI
89AQI
89AQI
87AQI
93AQI
96AQI
99AQI
78AQI
89AQI
95AQI
81AQI
87AQI
91AQI
95AQI
90AQI
89AQI
147AQI
97AQI
106AQI
98AQI
85AQI
83AQI
77AQI
75AQI
83AQI
89AQI
95AQI
97AQI
79AQI
103AQI
141AQI
182AQI
112AQI
129AQI
109AQI
124AQI
112AQI
140AQI
138AQI
141AQI
148AQI
127AQI
127AQI
121AQI
120AQI
126AQI
111AQI
137AQI
169AQI
120AQI
116AQI
106AQI
174AQI
120AQI
183AQI
147AQI
151AQI
145AQI
130AQI
113AQI
102AQI
101AQI
99AQI
100AQI
94AQI
95AQI
111AQI
93AQI
124AQI
126AQI
131AQI
151AQI
138AQI
134AQI
113AQI
114AQI
99AQI
100AQI
101AQI
115AQI
100AQI
106AQI
106AQI
145AQI
115AQI
119AQI
111AQI
123AQI
112AQI
109AQI
100AQI
92AQI
95AQI
89AQI
91AQI
90AQI
124AQI
116AQI
109AQI
100AQI
93AQI
95AQI
89AQI
91AQI
89AQI
97AQI
92AQI
95AQI
104AQI
97AQI
112AQI
100AQI
115AQI
109AQI
111AQI
110AQI
105AQI
106AQI
101AQI
108AQI
93AQI
90AQI
83AQI
80AQI
74AQI
69AQI
73AQI
69AQI
69AQI
70AQI
68AQI
62AQI
61AQI
58AQI
61AQI
60AQI
63AQI
62AQI
62AQI
64AQI
66AQI
68AQI
69AQI
69AQI
67AQI
68AQI
71AQI
65AQI
66AQI
63AQI
65AQI
65AQI
63AQI
66AQI
65AQI
65AQI
67AQI
64AQI
71AQI
64AQI
143AQI
101AQI
101AQI
127AQI
112AQI
95AQI
65AQI
64AQI
No. of days
2025106AQI
Highest AQI recorded in
January143AQI
Lowest AQI recorded in
August64AQI
2024110AQI
Highest AQI recorded in
February154AQI
Lowest AQI recorded in
August75AQI
2023115AQI
Highest AQI recorded in
January150AQI
Lowest AQI recorded in
July80AQI
2022104AQI
Highest AQI recorded in
December143AQI
Lowest AQI recorded in
June72AQI
2021111AQI
Highest AQI recorded in
March253AQI
Lowest AQI recorded in
September71AQI
202090AQI
Highest AQI recorded in
November126AQI
Lowest AQI recorded in
August63AQI
Most & Least Polluted Years Over the Last 6 Years
Lanzhou's annual 2025 AQI (106) shows an average percentage change of 1.1% (worsened AQI) compared to previous years: 2020 (90), 2021 (111), 2022 (104), 2023 (115), 2024 (110).