Sanmenxia, Sanmenxia, Henan, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
Sanmenxia, Sanmenxia, Henan, China
AQI Trends: Highest and Lowest
Same Day Analysis (12th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 163 of Unhealthy air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Mar - 12th Mar 2026
Sanmenxia, Sanmenxia, Henan, China
7 AM11th Mar 2026
6 PM
6 AM12th Mar 2026
171AQI
144AQI
177AQI
154AQI
In the last 24 hours,
Sanmenxia's AQI reached its highest point of 177 at 9 PM during the Night, while the lowest point, 144, was recorded at 7 AM during the Day between 11th Mar and 12th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Sanmenxia, Sanmenxia, Henan, China
5°C-1/14°C
8°C2/15°C
9°C4/17°C
12°C6/19°C
6°C1/10°C
3°C1/7°C
5°C-1/11°C
7°C1/13°C
9°C3/16°C
12°C4/22°C
14°C8/21°C
9°C4/13°C
7°C3/9°C
7°C0/14°C
8°C6/12°C
9°C6/13°C
8°C5/10°C
6°C3/7°C
2°C2/3°C
5°C0/10°C
9°C3/15°C
7°C5/11°C
9°C5/16°C
4°C2/7°C
2°C1/4°C
7°C0/14°C
9°C5/14°C
11°C4/18°C
13°C8/20°C
11°C6/15°C
121AQI
105AQI
125AQI
111AQI
2026 Days Vs Air Quality
Sanmenxia, Sanmenxia, Henan, China
1%
1
23%
16
46%
33
30%
21
Total number of days with different AQI categories in last 72 days in 2026 (293 days remaining)
Under WHO’s Safe Air Quality Limits: 1%
Health Risk Level:
Extreme
In 2026, 1% of 72 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
Sanmenxia, Sanmenxia, Henan, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
125AQI (US)
165AQI (US)
185AQI (US)
173AQI (US)
134AQI (US)
77AQI (US)
92AQI (US)
97AQI (US)
90AQI (US)
82AQI (US)
85AQI (US)
130AQI (US)
138AQI (US)
159AQI (US)
124AQI (US)
132AQI (US)
151AQI (US)
137AQI (US)
115AQI (US)
99AQI (US)
96AQI (US)
150AQI (US)
157AQI (US)
166AQI (US)
175AQI (US)
169AQI (US)
159AQI (US)
165AQI (US)
177AQI (US)
172AQI (US)
171AQI (US)
169AQI (US)
146AQI (US)
140AQI (US)
151AQI (US)
154AQI (US)
112AQI (US)
62AQI (US)
67AQI (US)
129AQI (US)
125AQI (US)
101AQI (US)
142AQI (US)
152AQI (US)
151AQI (US)
103AQI (US)
79AQI (US)
133AQI (US)
129AQI (US)
107AQI (US)
79AQI (US)
89AQI (US)
107AQI (US)
102AQI (US)
70AQI (US)
121AQI (US)
112AQI (US)
110AQI (US)
86AQI (US)
39AQI (US)
105AQI (US)
139AQI (US)
147AQI (US)
119AQI (US)
127AQI (US)
76AQI (US)
124AQI (US)
143AQI (US)
150AQI (US)
161AQI (US)
163AQI (US)
137AQI (US)
115AQI (US)
124AQI (US)
No. of days
2026126AQI (US)
Highest AQI (US) recorded in
January137AQI (US)
Lowest AQI (US) recorded in
February115AQI (US)
2025104AQI (US)
Highest AQI (US) recorded in
December143AQI (US)
Lowest AQI (US) recorded in
September57AQI (US)
2024110AQI (US)
Highest AQI (US) recorded in
February152AQI (US)
Lowest AQI (US) recorded in
July73AQI (US)
2023113AQI (US)
Highest AQI (US) recorded in
February161AQI (US)
Lowest AQI (US) recorded in
July78AQI (US)
2022121AQI (US)
Highest AQI (US) recorded in
January173AQI (US)
Lowest AQI (US) recorded in
August71AQI (US)
2021118AQI (US)
Highest AQI (US) recorded in
March212AQI (US)
Lowest AQI (US) recorded in
July67AQI (US)
2020109AQI (US)
Highest AQI (US) recorded in
December151AQI (US)
Lowest AQI (US) recorded in
August75AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Sanmenxia's annual 2026 AQI (US) (126) shows an average percentage change of 12.5% (worsened AQI (US)) compared to previous years: 2020 (109), 2021 (118), 2022 (121), 2023 (113), 2024 (110), 2025 (104).