Environment Protection Office, Zhaotong, Yunnan, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Environment Protection Office, Zhaotong, Yunnan, China
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 62 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Environment Protection Office, Zhaotong, Yunnan, China
5 AM4th Oct 2025
6 PM
4 AM5th Oct 2025
AQI
AQI
82AQI
49AQI
In the last 24 hours,
Environment Protection Office's AQI reached its highest point of 82 at 8 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Environment Protection Office, Zhaotong, Yunnan, China
20°C16/27°C
17°C15/20°C
19°C15/25°C
17°C16/20°C
17°C13/23°C
18°C15/23°C
19°C16/25°C
17°C15/19°C
17°C13/23°C
18°C13/25°C
19°C13/25°C
18°C13/25°C
18°C15/23°C
18°C14/24°C
16°C14/19°C
17°C14/22°C
18°C15/23°C
15°C14/18°C
13°C12/15°C
15°C11/21°C
13°C10/19°C
12°C10/15°C
17°C12/23°C
18°C14/24°C
16°C13/21°C
15°C13/18°C
17°C13/23°C
18°C13/23°C
18°C15/23°C
--°C/°C
--°C/°C
58AQI
50AQI
61AQI
55AQI
2025 Days Vs Air Quality
Environment Protection Office, Zhaotong, Yunnan, China
8%
23
87%
241
4%
12
0.3%
1
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 8%
Health Risk Level:
Extreme
In 2025, 8% of 277 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
Environment Protection Office, Zhaotong, Yunnan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
108AQI
106AQI
109AQI
115AQI
102AQI
127AQI
83AQI
89AQI
81AQI
82AQI
77AQI
92AQI
92AQI
84AQI
100AQI
96AQI
107AQI
87AQI
101AQI
99AQI
121AQI
115AQI
119AQI
90AQI
81AQI
74AQI
79AQI
99AQI
92AQI
92AQI
79AQI
80AQI
76AQI
73AQI
91AQI
79AQI
75AQI
73AQI
71AQI
76AQI
79AQI
84AQI
80AQI
77AQI
62AQI
60AQI
67AQI
60AQI
60AQI
61AQI
57AQI
57AQI
50AQI
53AQI
52AQI
49AQI
54AQI
44AQI
51AQI
52AQI
60AQI
58AQI
62AQI
54AQI
52AQI
56AQI
58AQI
59AQI
63AQI
63AQI
65AQI
73AQI
88AQI
71AQI
75AQI
65AQI
67AQI
76AQI
84AQI
98AQI
96AQI
90AQI
86AQI
81AQI
77AQI
77AQI
97AQI
83AQI
83AQI
79AQI
82AQI
80AQI
86AQI
87AQI
85AQI
87AQI
84AQI
92AQI
90AQI
89AQI
93AQI
162AQI
98AQI
107AQI
87AQI
90AQI
78AQI
72AQI
71AQI
66AQI
65AQI
65AQI
80AQI
71AQI
77AQI
72AQI
74AQI
71AQI
74AQI
68AQI
73AQI
71AQI
71AQI
71AQI
66AQI
64AQI
61AQI
62AQI
68AQI
68AQI
65AQI
68AQI
82AQI
74AQI
80AQI
71AQI
73AQI
71AQI
69AQI
67AQI
70AQI
71AQI
78AQI
75AQI
64AQI
65AQI
54AQI
56AQI
55AQI
50AQI
48AQI
52AQI
53AQI
57AQI
65AQI
60AQI
68AQI
69AQI
70AQI
73AQI
71AQI
68AQI
71AQI
75AQI
78AQI
71AQI
67AQI
63AQI
58AQI
58AQI
59AQI
57AQI
53AQI
56AQI
50AQI
49AQI
53AQI
55AQI
52AQI
55AQI
51AQI
50AQI
45AQI
50AQI
50AQI
51AQI
52AQI
53AQI
52AQI
54AQI
52AQI
55AQI
55AQI
59AQI
62AQI
60AQI
60AQI
59AQI
62AQI
58AQI
57AQI
55AQI
52AQI
51AQI
51AQI
55AQI
56AQI
58AQI
57AQI
62AQI
60AQI
60AQI
58AQI
60AQI
61AQI
61AQI
60AQI
62AQI
62AQI
56AQI
59AQI
59AQI
56AQI
55AQI
57AQI
59AQI
57AQI
50AQI
52AQI
55AQI
56AQI
55AQI
52AQI
48AQI
48AQI
48AQI
49AQI
49AQI
50AQI
51AQI
53AQI
51AQI
55AQI
56AQI
55AQI
53AQI
53AQI
72AQI
60AQI
61AQI
60AQI
57AQI
61AQI
55AQI
54AQI
58AQI
58AQI
57AQI
52AQI
56AQI
57AQI
58AQI
59AQI
60AQI
56AQI
54AQI
52AQI
65AQI
70AQI
64AQI
65AQI
50AQI
40AQI
21AQI
33AQI
48AQI
62AQI
96AQI
66AQI
73AQI
83AQI
67AQI
61AQI
55AQI
55AQI
58AQI
41AQI
No. of days
202568AQI
Highest AQI recorded in
January96AQI
Lowest AQI recorded in
October41AQI
202470AQI
Highest AQI recorded in
January97AQI
Lowest AQI recorded in
July51AQI
202380AQI
Highest AQI recorded in
January112AQI
Lowest AQI recorded in
August56AQI
202275AQI
Highest AQI recorded in
March103AQI
Lowest AQI recorded in
July56AQI
202175AQI
Highest AQI recorded in
February103AQI
Lowest AQI recorded in
July58AQI
202062AQI
Highest AQI recorded in
March93AQI
Lowest AQI recorded in
September49AQI
Most & Least Polluted Years Over the Last 6 Years
Environment Protection Office's annual 2025 AQI (68) shows an average percentage change of -5.7% (improved AQI) compared to previous years: 2020 (62), 2021 (75), 2022 (75), 2023 (80), 2024 (70).