City Government, Sanmenxia, Henan, 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
City Government, Sanmenxia, Henan, China
AQI Trends: Highest and Lowest
Same Day Analysis (17th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 58 of Moderate 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: 17th Oct - 18th Oct 2025
City Government, Sanmenxia, Henan, China
6 AM17th Oct 2025
6 PM
5 AM18th Oct 2025
AQI
AQI
49AQI
35AQI
In the last 24 hours,
City Government's AQI reached its highest point of 49 at 9 PM during the Night, while the lowest point, 35, was recorded at 6 PM during the Night between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
City Government, Sanmenxia, Henan, China
13°C11/14°C
14°C11/18°C
17°C11/24°C
15°C11/17°C
14°C12/16°C
14°C12/16°C
18°C12/25°C
19°C14/25°C
18°C15/21°C
16°C15/18°C
17°C14/19°C
18°C13/24°C
20°C14/27°C
17°C13/20°C
15°C13/18°C
16°C14/20°C
16°C14/18°C
17°C16/18°C
16°C14/18°C
16°C14/19°C
16°C15/19°C
14°C10/15°C
12°C10/13°C
13°C10/15°C
13°C12/14°C
15°C12/20°C
16°C12/21°C
15°C13/19°C
15°C12/19°C
--°C/°C
--°C/°C
61AQI
54AQI
61AQI
55AQI
2025 Days Vs Air Quality
City Government, Sanmenxia, Henan, China
4%
13
56%
161
28%
82
11%
33
0.3%
1
Total number of days with different AQI categories in last 290 days in 2025 (75 days remaining)
Under WHO’s Safe Air Quality Limits: 4%
Health Risk Level:
Extreme
In 2025, 4% of 290 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
City Government, Sanmenxia, Henan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
155AQI
144AQI
172AQI
173AQI
155AQI
115AQI
108AQI
107AQI
91AQI
130AQI
112AQI
101AQI
136AQI
90AQI
101AQI
106AQI
106AQI
148AQI
146AQI
162AQI
162AQI
196AQI
164AQI
166AQI
137AQI
98AQI
87AQI
110AQI
132AQI
171AQI
187AQI
186AQI
176AQI
112AQI
109AQI
80AQI
98AQI
72AQI
70AQI
84AQI
122AQI
144AQI
103AQI
151AQI
137AQI
154AQI
120AQI
145AQI
146AQI
144AQI
154AQI
163AQI
171AQI
118AQI
149AQI
130AQI
133AQI
146AQI
155AQI
157AQI
109AQI
93AQI
101AQI
134AQI
138AQI
141AQI
132AQI
150AQI
145AQI
153AQI
152AQI
159AQI
131AQI
96AQI
80AQI
76AQI
70AQI
74AQI
73AQI
86AQI
95AQI
119AQI
174AQI
114AQI
175AQI
150AQI
157AQI
127AQI
108AQI
109AQI
106AQI
93AQI
105AQI
125AQI
117AQI
112AQI
122AQI
134AQI
141AQI
123AQI
140AQI
187AQI
136AQI
93AQI
106AQI
123AQI
140AQI
156AQI
145AQI
138AQI
119AQI
200AQI
146AQI
117AQI
118AQI
116AQI
95AQI
85AQI
79AQI
126AQI
110AQI
108AQI
99AQI
102AQI
157AQI
232AQI
162AQI
158AQI
120AQI
108AQI
90AQI
91AQI
91AQI
87AQI
91AQI
91AQI
151AQI
123AQI
126AQI
119AQI
121AQI
115AQI
102AQI
97AQI
104AQI
86AQI
100AQI
103AQI
104AQI
94AQI
90AQI
91AQI
83AQI
67AQI
72AQI
64AQI
74AQI
71AQI
86AQI
74AQI
76AQI
83AQI
82AQI
83AQI
75AQI
80AQI
72AQI
72AQI
68AQI
67AQI
74AQI
68AQI
68AQI
68AQI
69AQI
72AQI
64AQI
70AQI
59AQI
66AQI
65AQI
57AQI
55AQI
54AQI
54AQI
48AQI
57AQI
52AQI
63AQI
67AQI
65AQI
76AQI
81AQI
73AQI
73AQI
74AQI
73AQI
72AQI
72AQI
71AQI
70AQI
68AQI
72AQI
62AQI
61AQI
61AQI
63AQI
64AQI
61AQI
61AQI
63AQI
64AQI
62AQI
65AQI
65AQI
70AQI
64AQI
64AQI
69AQI
65AQI
59AQI
58AQI
57AQI
61AQI
65AQI
64AQI
65AQI
53AQI
61AQI
63AQI
60AQI
60AQI
59AQI
60AQI
58AQI
56AQI
66AQI
66AQI
64AQI
58AQI
55AQI
59AQI
57AQI
56AQI
63AQI
52AQI
37AQI
40AQI
62AQI
67AQI
63AQI
56AQI
62AQI
49AQI
50AQI
56AQI
58AQI
64AQI
62AQI
50AQI
44AQI
47AQI
59AQI
52AQI
45AQI
50AQI
60AQI
53AQI
54AQI
57AQI
61AQI
65AQI
82AQI
68AQI
46AQI
54AQI
83AQI
60AQI
51AQI
53AQI
53AQI
38AQI
46AQI
53AQI
55AQI
61AQI
88AQI
91AQI
85AQI
58AQI
134AQI
131AQI
122AQI
125AQI
114AQI
73AQI
65AQI
62AQI
56AQI
61AQI
No. of days
202596AQI
Highest AQI recorded in
January134AQI
Lowest AQI recorded in
September56AQI
2024102AQI
Highest AQI recorded in
February147AQI
Lowest AQI recorded in
July62AQI
2023103AQI
Highest AQI recorded in
February157AQI
Lowest AQI recorded in
July69AQI
2022116AQI
Highest AQI recorded in
January169AQI
Lowest AQI recorded in
August61AQI
2021113AQI
Highest AQI recorded in
March198AQI
Lowest AQI recorded in
July64AQI
2020106AQI
Highest AQI recorded in
December146AQI
Lowest AQI recorded in
August73AQI
Most & Least Polluted Years Over the Last 6 Years
City Government's annual 2025 AQI (96) shows an average percentage change of -11.2% (improved AQI) compared to previous years: 2020 (106), 2021 (113), 2022 (116), 2023 (103), 2024 (102).