Dazhou, Sichuan, 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
Dazhou, Sichuan, China
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 39 of Good 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: 19th Sep - 20th Sep 2025
Dazhou, Sichuan, China
6 AM19th Sep 2025
7 PM
5 AM20th Sep 2025
AQI
AQI
52AQI
17AQI
In the last 24 hours,
Dazhou's AQI reached its highest point of 52 at 2 AM during the Night, while the lowest point, 17, was recorded at 10 AM during the Night between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Dazhou, Sichuan, China
29°C25/34°C
27°C23/32°C
27°C24/32°C
24°C22/27°C
27°C21/33°C
28°C23/34°C
29°C24/34°C
29°C24/34°C
25°C21/29°C
24°C21/27°C
24°C20/28°C
25°C18/31°C
27°C22/33°C
26°C23/30°C
27°C24/32°C
24°C20/30°C
21°C19/22°C
23°C20/27°C
22°C21/24°C
24°C21/29°C
25°C22/29°C
25°C22/30°C
23°C21/26°C
26°C21/31°C
26°C22/32°C
27°C23/32°C
26°C22/32°C
23°C22/24°C
24°C21/27°C
--°C/°C
--°C/°C
57AQI
39AQI
57AQI
54AQI
2025 Days Vs Air Quality
Dazhou, Sichuan, China
25%
65
50%
130
17%
45
7%
17
1%
3
0.3%
1
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 25%
Health Risk Level:
Very high
In 2025, 25% of 262 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
Dazhou, Sichuan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
180AQI
185AQI
183AQI
149AQI
134AQI
155AQI
156AQI
138AQI
136AQI
135AQI
138AQI
138AQI
156AQI
163AQI
151AQI
145AQI
154AQI
166AQI
166AQI
169AQI
176AQI
202AQI
223AQI
138AQI
92AQI
94AQI
109AQI
117AQI
154AQI
152AQI
172AQI
112AQI
103AQI
87AQI
87AQI
81AQI
76AQI
77AQI
71AQI
82AQI
101AQI
131AQI
84AQI
104AQI
86AQI
98AQI
101AQI
106AQI
100AQI
117AQI
79AQI
95AQI
65AQI
72AQI
85AQI
105AQI
131AQI
119AQI
138AQI
143AQI
135AQI
67AQI
62AQI
47AQI
60AQI
65AQI
84AQI
91AQI
87AQI
95AQI
94AQI
73AQI
72AQI
50AQI
53AQI
71AQI
75AQI
93AQI
89AQI
102AQI
128AQI
127AQI
121AQI
107AQI
108AQI
141AQI
75AQI
83AQI
67AQI
67AQI
73AQI
88AQI
91AQI
97AQI
109AQI
103AQI
99AQI
96AQI
100AQI
80AQI
73AQI
325AQI
241AQI
161AQI
142AQI
132AQI
130AQI
116AQI
97AQI
70AQI
71AQI
78AQI
90AQI
76AQI
89AQI
87AQI
81AQI
77AQI
80AQI
66AQI
78AQI
84AQI
88AQI
74AQI
74AQI
84AQI
74AQI
68AQI
95AQI
93AQI
85AQI
90AQI
78AQI
82AQI
114AQI
116AQI
136AQI
107AQI
130AQI
114AQI
115AQI
70AQI
91AQI
94AQI
84AQI
78AQI
70AQI
59AQI
60AQI
59AQI
52AQI
40AQI
49AQI
59AQI
76AQI
64AQI
76AQI
51AQI
43AQI
53AQI
66AQI
64AQI
64AQI
68AQI
63AQI
61AQI
65AQI
65AQI
61AQI
55AQI
57AQI
46AQI
36AQI
35AQI
39AQI
36AQI
38AQI
42AQI
47AQI
44AQI
44AQI
41AQI
39AQI
40AQI
39AQI
41AQI
47AQI
40AQI
41AQI
43AQI
43AQI
44AQI
53AQI
58AQI
59AQI
61AQI
61AQI
60AQI
51AQI
49AQI
45AQI
42AQI
39AQI
35AQI
32AQI
32AQI
34AQI
40AQI
38AQI
44AQI
41AQI
49AQI
59AQI
57AQI
61AQI
63AQI
62AQI
59AQI
55AQI
44AQI
42AQI
40AQI
42AQI
49AQI
46AQI
50AQI
50AQI
42AQI
44AQI
48AQI
52AQI
49AQI
50AQI
45AQI
47AQI
44AQI
47AQI
48AQI
49AQI
52AQI
52AQI
56AQI
57AQI
56AQI
57AQI
64AQI
60AQI
75AQI
57AQI
62AQI
56AQI
54AQI
54AQI
49AQI
42AQI
44AQI
52AQI
50AQI
49AQI
42AQI
39AQI
152AQI
96AQI
88AQI
107AQI
87AQI
54AQI
45AQI
50AQI
53AQI
No. of days
202583AQI
Highest AQI recorded in
January152AQI
Lowest AQI recorded in
July45AQI
202478AQI
Highest AQI recorded in
December134AQI
Lowest AQI recorded in
July37AQI
202382AQI
Highest AQI recorded in
January159AQI
Lowest AQI recorded in
July47AQI
202287AQI
Highest AQI recorded in
December140AQI
Lowest AQI recorded in
August24AQI
202194AQI
Highest AQI recorded in
January160AQI
Lowest AQI recorded in
July54AQI
202088AQI
Highest AQI recorded in
December138AQI
Lowest AQI recorded in
July54AQI
Most & Least Polluted Years Over the Last 6 Years
Dazhou's annual 2025 AQI (83) shows an average percentage change of -3.3% (improved AQI) compared to previous years: 2020 (88), 2021 (94), 2022 (87), 2023 (82), 2024 (78).