City Environmental Monitoring Station, Baoshan, Yunnan, 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
City Environmental Monitoring Station, Baoshan, Yunnan, China
AQI Trends: Highest and Lowest
Same Day Analysis (23rd September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 52 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 23rd Sep - 24th Sep 2025
City Environmental Monitoring Station, Baoshan, Yunnan, China
6 AM23rd Sep 2025
6 PM
5 AM24th Sep 2025
61AQI
24AQI
58AQI
42AQI
In the last 24 hours,
City Environmental Monitoring Station's AQI reached its highest point of 61 at 12 PM during the Day, while the lowest point, 24, was recorded at 6 PM during the Day between 23rd Sep and 24th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
City Environmental Monitoring Station, Baoshan, Yunnan, China
19°C15/24°C
21°C14/28°C
19°C14/26°C
19°C15/24°C
19°C17/22°C
20°C16/24°C
20°C15/28°C
19°C13/27°C
19°C15/25°C
20°C14/26°C
19°C16/26°C
19°C13/24°C
19°C16/24°C
19°C14/24°C
19°C15/23°C
20°C17/23°C
19°C16/23°C
19°C16/22°C
18°C16/22°C
16°C14/18°C
17°C13/22°C
17°C13/22°C
17°C14/22°C
18°C16/22°C
18°C12/23°C
18°C13/25°C
19°C15/23°C
19°C15/23°C
19°C14/24°C
18°C14/24°C
--°C/°C
54AQI
41AQI
57AQI
53AQI
2025 Days Vs Air Quality
City Environmental Monitoring Station, Baoshan, Yunnan, China
26%
68
62%
166
11%
30
0.7%
2
Total number of days with different AQI categories in last 267 days in 2025 (98 days remaining)
Under WHO’s Safe Air Quality Limits: 26%
Health Risk Level:
Very high
In 2025, 26% of 267 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
City Environmental Monitoring Station, Baoshan, Yunnan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
59AQI
64AQI
70AQI
63AQI
70AQI
65AQI
64AQI
72AQI
65AQI
76AQI
72AQI
77AQI
69AQI
76AQI
80AQI
87AQI
78AQI
76AQI
71AQI
68AQI
68AQI
67AQI
72AQI
66AQI
74AQI
90AQI
71AQI
104AQI
121AQI
85AQI
100AQI
105AQI
108AQI
97AQI
94AQI
103AQI
109AQI
101AQI
88AQI
86AQI
77AQI
76AQI
76AQI
83AQI
75AQI
68AQI
80AQI
67AQI
69AQI
72AQI
67AQI
68AQI
67AQI
66AQI
66AQI
66AQI
54AQI
54AQI
61AQI
65AQI
71AQI
68AQI
69AQI
74AQI
74AQI
84AQI
84AQI
83AQI
73AQI
80AQI
89AQI
104AQI
102AQI
100AQI
101AQI
96AQI
106AQI
105AQI
100AQI
121AQI
110AQI
113AQI
93AQI
90AQI
77AQI
82AQI
121AQI
138AQI
139AQI
154AQI
155AQI
145AQI
147AQI
141AQI
143AQI
134AQI
123AQI
135AQI
119AQI
125AQI
106AQI
99AQI
70AQI
74AQI
75AQI
65AQI
62AQI
64AQI
63AQI
66AQI
64AQI
68AQI
82AQI
83AQI
92AQI
101AQI
103AQI
100AQI
85AQI
90AQI
72AQI
68AQI
64AQI
56AQI
59AQI
64AQI
64AQI
69AQI
73AQI
83AQI
74AQI
81AQI
72AQI
75AQI
68AQI
72AQI
65AQI
64AQI
65AQI
68AQI
65AQI
65AQI
70AQI
63AQI
53AQI
50AQI
49AQI
47AQI
48AQI
49AQI
47AQI
48AQI
46AQI
54AQI
69AQI
68AQI
64AQI
61AQI
62AQI
61AQI
53AQI
62AQI
65AQI
71AQI
64AQI
65AQI
58AQI
51AQI
47AQI
44AQI
49AQI
42AQI
26AQI
35AQI
37AQI
38AQI
39AQI
44AQI
44AQI
43AQI
43AQI
44AQI
41AQI
40AQI
46AQI
41AQI
40AQI
41AQI
41AQI
42AQI
42AQI
44AQI
51AQI
54AQI
51AQI
51AQI
53AQI
54AQI
51AQI
53AQI
50AQI
48AQI
51AQI
52AQI
50AQI
44AQI
47AQI
48AQI
51AQI
56AQI
48AQI
47AQI
52AQI
51AQI
46AQI
43AQI
50AQI
54AQI
52AQI
46AQI
44AQI
42AQI
47AQI
47AQI
48AQI
50AQI
52AQI
52AQI
49AQI
50AQI
50AQI
47AQI
44AQI
46AQI
45AQI
43AQI
45AQI
47AQI
47AQI
48AQI
47AQI
52AQI
53AQI
53AQI
53AQI
50AQI
58AQI
57AQI
56AQI
55AQI
55AQI
55AQI
56AQI
52AQI
54AQI
48AQI
51AQI
46AQI
44AQI
48AQI
51AQI
54AQI
54AQI
54AQI
55AQI
52AQI
75AQI
79AQI
96AQI
99AQI
64AQI
52AQI
47AQI
48AQI
53AQI
No. of days
202568AQI
Highest AQI recorded in
April99AQI
Lowest AQI recorded in
July47AQI
202460AQI
Highest AQI recorded in
April98AQI
Lowest AQI recorded in
November39AQI
202359AQI
Highest AQI recorded in
April97AQI
Lowest AQI recorded in
July39AQI
202251AQI
Highest AQI recorded in
March82AQI
Lowest AQI recorded in
August27AQI
202179AQI
Highest AQI recorded in
April140AQI
Lowest AQI recorded in
August44AQI
202060AQI
Highest AQI recorded in
March111AQI
Lowest AQI recorded in
July41AQI
Most & Least Polluted Years Over the Last 6 Years
City Environmental Monitoring Station's annual 2025 AQI (68) shows an average percentage change of 12.6% (worsened AQI) compared to previous years: 2020 (60), 2021 (79), 2022 (51), 2023 (59), 2024 (60).