Bayan Hot, Inner Mongolia, 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
Bayan Hot, Inner Mongolia, China
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 65 of Moderate air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Sep - 19th Sep 2025
Bayan Hot, Inner Mongolia, China
6 AM18th Sep 2025
7 PM
5 AM19th Sep 2025
70AQI
50AQI
70AQI
62AQI
In the last 24 hours,
Bayan Hot's AQI reached its highest point of 70 at 7 AM during the Day, while the lowest point, 50, was recorded at 2 PM during the Day between 18th Sep and 19th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Bayan Hot, Inner Mongolia, China
19°C13/24°C
20°C15/24°C
21°C18/25°C
19°C14/24°C
22°C18/27°C
23°C19/27°C
18°C15/20°C
16°C14/17°C
20°C17/23°C
20°C16/24°C
22°C18/26°C
24°C20/28°C
25°C21/29°C
19°C14/20°C
20°C16/24°C
20°C16/24°C
17°C13/21°C
20°C16/25°C
21°C18/23°C
22°C18/26°C
24°C19/28°C
24°C20/28°C
23°C20/26°C
23°C19/28°C
20°C17/22°C
22°C17/26°C
20°C18/22°C
15°C12/16°C
14°C11/17°C
15°C13/17°C
--°C/°C
67AQI
64AQI
66AQI
65AQI
2025 Days Vs Air Quality
Bayan Hot, Inner Mongolia, China
0.3%
1
84%
218
14%
37
0.3%
1
0.7%
2
0.7%
2
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 0.38%
Health Risk Level:
Extreme
In 2025, 0.38% of 262 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
Bayan Hot, Inner Mongolia, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
85AQI
83AQI
94AQI
102AQI
78AQI
92AQI
76AQI
77AQI
79AQI
72AQI
78AQI
101AQI
103AQI
67AQI
88AQI
84AQI
93AQI
85AQI
92AQI
86AQI
106AQI
99AQI
112AQI
130AQI
90AQI
81AQI
77AQI
91AQI
111AQI
91AQI
90AQI
83AQI
61AQI
65AQI
55AQI
59AQI
81AQI
72AQI
68AQI
85AQI
84AQI
83AQI
74AQI
82AQI
64AQI
70AQI
70AQI
71AQI
66AQI
60AQI
72AQI
70AQI
50AQI
55AQI
62AQI
63AQI
62AQI
60AQI
61AQI
82AQI
61AQI
69AQI
71AQI
66AQI
65AQI
80AQI
72AQI
113AQI
81AQI
119AQI
63AQI
75AQI
83AQI
61AQI
65AQI
60AQI
63AQI
60AQI
72AQI
80AQI
104AQI
472AQI
387AQI
284AQI
206AQI
119AQI
99AQI
76AQI
74AQI
65AQI
74AQI
79AQI
115AQI
76AQI
84AQI
110AQI
96AQI
129AQI
73AQI
106AQI
112AQI
111AQI
85AQI
78AQI
104AQI
127AQI
113AQI
105AQI
124AQI
133AQI
140AQI
106AQI
95AQI
75AQI
75AQI
88AQI
69AQI
70AQI
112AQI
115AQI
106AQI
118AQI
90AQI
125AQI
152AQI
125AQI
135AQI
112AQI
101AQI
79AQI
71AQI
90AQI
100AQI
93AQI
81AQI
136AQI
126AQI
101AQI
90AQI
91AQI
100AQI
87AQI
82AQI
82AQI
77AQI
80AQI
72AQI
82AQI
94AQI
80AQI
78AQI
71AQI
62AQI
54AQI
69AQI
57AQI
65AQI
64AQI
61AQI
67AQI
62AQI
66AQI
78AQI
71AQI
69AQI
69AQI
63AQI
67AQI
71AQI
66AQI
65AQI
62AQI
55AQI
55AQI
58AQI
59AQI
57AQI
56AQI
63AQI
61AQI
58AQI
55AQI
54AQI
56AQI
57AQI
56AQI
55AQI
56AQI
60AQI
57AQI
59AQI
59AQI
64AQI
65AQI
67AQI
65AQI
61AQI
59AQI
66AQI
64AQI
55AQI
53AQI
58AQI
61AQI
57AQI
60AQI
63AQI
61AQI
60AQI
63AQI
59AQI
63AQI
67AQI
70AQI
68AQI
62AQI
59AQI
62AQI
60AQI
53AQI
54AQI
59AQI
61AQI
61AQI
61AQI
58AQI
61AQI
58AQI
59AQI
57AQI
58AQI
60AQI
54AQI
58AQI
56AQI
56AQI
58AQI
59AQI
54AQI
56AQI
52AQI
54AQI
55AQI
56AQI
93AQI
82AQI
64AQI
71AQI
79AQI
70AQI
75AQI
73AQI
69AQI
71AQI
71AQI
77AQI
77AQI
75AQI
67AQI
65AQI
65AQI
90AQI
68AQI
111AQI
99AQI
98AQI
63AQI
60AQI
59AQI
72AQI
No. of days
202581AQI
Highest AQI recorded in
March111AQI
Lowest AQI recorded in
August59AQI
202473AQI
Highest AQI recorded in
April97AQI
Lowest AQI recorded in
October58AQI
202378AQI
Highest AQI recorded in
April114AQI
Lowest AQI recorded in
October53AQI
202278AQI
Highest AQI recorded in
April95AQI
Lowest AQI recorded in
August57AQI
202190AQI
Highest AQI recorded in
March234AQI
Lowest AQI recorded in
October62AQI
202075AQI
Highest AQI recorded in
March97AQI
Lowest AQI recorded in
August62AQI
Most & Least Polluted Years Over the Last 6 Years
Bayan Hot's annual 2025 AQI (81) shows an average percentage change of 2.6% (worsened AQI) compared to previous years: 2020 (75), 2021 (90), 2022 (78), 2023 (78), 2024 (73).