Guiyang, Guizhou, 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
Guiyang, Guizhou, China
AQI Trends: Highest and Lowest
Same Day Analysis (20th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 59 of Moderate air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Sep - 22nd Sep 2025
Guiyang, Guizhou, China
6 AM21st Sep 2025
7 PM
5 AM22nd Sep 2025
AQI
AQI
61AQI
35AQI
In the last 24 hours,
Guiyang's AQI reached its highest point of 61 at 6 AM during the Night, while the lowest point, 35, was recorded at 5 PM during the Night between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Guiyang, Guizhou, China
20°C19/24°C
22°C18/27°C
22°C17/28°C
21°C17/27°C
21°C17/27°C
21°C17/27°C
21°C17/26°C
22°C17/27°C
22°C17/28°C
22°C18/29°C
23°C18/28°C
23°C19/28°C
23°C19/28°C
23°C19/29°C
22°C19/27°C
23°C19/29°C
22°C18/28°C
20°C18/24°C
20°C18/23°C
22°C19/27°C
22°C20/26°C
21°C19/24°C
20°C18/23°C
21°C17/25°C
21°C18/26°C
21°C17/26°C
21°C17/26°C
22°C18/27°C
21°C18/25°C
--°C/°C
--°C/°C
52AQI
39AQI
53AQI
52AQI
2025 Days Vs Air Quality
Guiyang, Guizhou, China
35%
91
54%
142
11%
29
0.3%
1
Total number of days with different AQI categories in last 264 days in 2025 (101 days remaining)
Under WHO’s Safe Air Quality Limits: 35%
Health Risk Level:
High
In 2025, 35% of 264 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
Guiyang, Guizhou, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
112AQI
116AQI
125AQI
126AQI
120AQI
135AQI
109AQI
104AQI
72AQI
84AQI
78AQI
88AQI
82AQI
113AQI
103AQI
122AQI
103AQI
120AQI
103AQI
132AQI
118AQI
137AQI
109AQI
109AQI
64AQI
64AQI
69AQI
74AQI
94AQI
90AQI
79AQI
67AQI
60AQI
67AQI
66AQI
81AQI
53AQI
62AQI
64AQI
70AQI
71AQI
66AQI
91AQI
77AQI
51AQI
60AQI
59AQI
54AQI
51AQI
38AQI
32AQI
37AQI
25AQI
37AQI
39AQI
45AQI
53AQI
41AQI
51AQI
48AQI
55AQI
57AQI
46AQI
37AQI
44AQI
53AQI
58AQI
47AQI
51AQI
58AQI
66AQI
55AQI
64AQI
57AQI
62AQI
67AQI
65AQI
63AQI
77AQI
83AQI
106AQI
86AQI
103AQI
89AQI
92AQI
99AQI
96AQI
69AQI
74AQI
76AQI
72AQI
76AQI
81AQI
102AQI
91AQI
103AQI
101AQI
102AQI
109AQI
95AQI
92AQI
163AQI
138AQI
113AQI
109AQI
92AQI
98AQI
84AQI
64AQI
71AQI
63AQI
57AQI
68AQI
52AQI
67AQI
62AQI
57AQI
61AQI
63AQI
49AQI
68AQI
69AQI
68AQI
61AQI
68AQI
63AQI
60AQI
56AQI
59AQI
57AQI
66AQI
63AQI
64AQI
70AQI
74AQI
72AQI
69AQI
79AQI
87AQI
64AQI
60AQI
58AQI
62AQI
71AQI
66AQI
61AQI
53AQI
51AQI
48AQI
49AQI
45AQI
52AQI
44AQI
54AQI
67AQI
56AQI
63AQI
64AQI
72AQI
63AQI
65AQI
64AQI
60AQI
62AQI
56AQI
56AQI
59AQI
53AQI
50AQI
45AQI
48AQI
49AQI
50AQI
55AQI
44AQI
44AQI
45AQI
44AQI
50AQI
44AQI
43AQI
41AQI
39AQI
39AQI
39AQI
39AQI
43AQI
47AQI
51AQI
46AQI
48AQI
46AQI
51AQI
51AQI
53AQI
50AQI
50AQI
48AQI
51AQI
51AQI
48AQI
42AQI
41AQI
37AQI
37AQI
37AQI
39AQI
44AQI
46AQI
51AQI
48AQI
47AQI
54AQI
57AQI
55AQI
55AQI
56AQI
55AQI
47AQI
40AQI
44AQI
48AQI
46AQI
48AQI
50AQI
55AQI
47AQI
42AQI
43AQI
44AQI
39AQI
42AQI
40AQI
40AQI
39AQI
42AQI
42AQI
42AQI
43AQI
43AQI
46AQI
46AQI
49AQI
49AQI
53AQI
50AQI
44AQI
48AQI
56AQI
56AQI
56AQI
52AQI
54AQI
47AQI
46AQI
47AQI
50AQI
50AQI
46AQI
47AQI
46AQI
50AQI
59AQI
102AQI
56AQI
68AQI
85AQI
63AQI
54AQI
45AQI
46AQI
50AQI
No. of days
202564AQI
Highest AQI recorded in
January102AQI
Lowest AQI recorded in
July45AQI
202462AQI
Highest AQI recorded in
December98AQI
Lowest AQI recorded in
July38AQI
202374AQI
Highest AQI recorded in
January108AQI
Lowest AQI recorded in
August44AQI
202267AQI
Highest AQI recorded in
December100AQI
Lowest AQI recorded in
July38AQI
202169AQI
Highest AQI recorded in
January110AQI
Lowest AQI recorded in
July42AQI
202067AQI
Highest AQI recorded in
March100AQI
Lowest AQI recorded in
August48AQI
Most & Least Polluted Years Over the Last 6 Years
Guiyang's annual 2025 AQI (64) shows an average percentage change of -5.3% (improved AQI) compared to previous years: 2020 (67), 2021 (69), 2022 (67), 2023 (74), 2024 (62).