Sewage Treatment Plant, Shuangqiao, Henan, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Sewage Treatment Plant, Shuangqiao, Henan, China
AQI Trends: Highest and Lowest
Same Day Analysis (11th August ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 3rd highest AQI at 61 of Moderate air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Aug - 13th Aug 2025
Sewage Treatment Plant, Shuangqiao, Henan, China
5 AM12th Aug 2025
7 PM
4 AM13th Aug 2025
AQI
AQI
68AQI
52AQI
In the last 24 hours,
Sewage Treatment Plant's AQI reached its highest point of 68 at 12 PM during the Night, while the lowest point, 52, was recorded at 5 PM during the Night between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Sewage Treatment Plant, Shuangqiao, Henan, China
34°C29/40°C
34°C28/41°C
34°C29/38°C
34°C27/40°C
34°C27/40°C
32°C25/38°C
31°C27/36°C
31°C25/38°C
29°C24/36°C
28°C24/33°C
30°C25/35°C
33°C27/40°C
33°C28/40°C
32°C28/38°C
33°C27/38°C
31°C26/41°C
32°C26/40°C
32°C25/39°C
32°C25/39°C
33°C27/38°C
35°C28/43°C
34°C29/40°C
31°C27/37°C
29°C27/34°C
31°C27/38°C
30°C26/34°C
24°C23/25°C
26°C23/30°C
29°C23/35°C
--°C/°C
--°C/°C
65AQI
65AQI
64AQI
64AQI
2025 Days Vs Air Quality
Sewage Treatment Plant, Shuangqiao, Henan, China
0.4%
1
61%
137
27%
60
11%
24
0.4%
1
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Under WHO’s Safe Air Quality Limits: 0.45%
Health Risk Level:
Extreme
In 2025, 0.45% of 224 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
Sewage Treatment Plant, Shuangqiao, Henan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
146AQI
150AQI
157AQI
174AQI
141AQI
116AQI
109AQI
92AQI
105AQI
131AQI
98AQI
95AQI
131AQI
94AQI
86AQI
98AQI
130AQI
136AQI
153AQI
163AQI
182AQI
189AQI
165AQI
177AQI
166AQI
102AQI
91AQI
100AQI
170AQI
172AQI
175AQI
172AQI
179AQI
124AQI
114AQI
84AQI
110AQI
67AQI
80AQI
107AQI
132AQI
150AQI
107AQI
120AQI
130AQI
118AQI
97AQI
119AQI
132AQI
113AQI
139AQI
149AQI
157AQI
122AQI
153AQI
127AQI
149AQI
154AQI
164AQI
157AQI
99AQI
92AQI
102AQI
135AQI
139AQI
139AQI
141AQI
153AQI
153AQI
160AQI
152AQI
158AQI
117AQI
117AQI
78AQI
80AQI
69AQI
82AQI
68AQI
77AQI
81AQI
103AQI
352AQI
128AQI
129AQI
106AQI
117AQI
91AQI
92AQI
96AQI
90AQI
84AQI
93AQI
101AQI
86AQI
97AQI
98AQI
103AQI
104AQI
108AQI
103AQI
106AQI
100AQI
85AQI
90AQI
110AQI
113AQI
110AQI
108AQI
107AQI
96AQI
115AQI
113AQI
95AQI
97AQI
95AQI
90AQI
84AQI
83AQI
100AQI
85AQI
96AQI
83AQI
87AQI
103AQI
107AQI
118AQI
108AQI
98AQI
91AQI
85AQI
84AQI
91AQI
86AQI
84AQI
90AQI
94AQI
91AQI
101AQI
99AQI
100AQI
98AQI
109AQI
93AQI
96AQI
89AQI
99AQI
96AQI
98AQI
88AQI
89AQI
87AQI
88AQI
84AQI
82AQI
82AQI
83AQI
83AQI
88AQI
82AQI
81AQI
84AQI
85AQI
87AQI
80AQI
76AQI
74AQI
76AQI
66AQI
64AQI
69AQI
67AQI
62AQI
63AQI
67AQI
79AQI
65AQI
68AQI
60AQI
63AQI
60AQI
55AQI
53AQI
50AQI
56AQI
51AQI
55AQI
57AQI
63AQI
68AQI
72AQI
80AQI
81AQI
77AQI
74AQI
74AQI
74AQI
66AQI
70AQI
72AQI
71AQI
67AQI
68AQI
60AQI
58AQI
61AQI
62AQI
63AQI
61AQI
61AQI
60AQI
61AQI
62AQI
63AQI
63AQI
68AQI
67AQI
66AQI
67AQI
65AQI
59AQI
61AQI
61AQI
135AQI
127AQI
121AQI
99AQI
95AQI
75AQI
65AQI
64AQI
No. of days
2025100AQI
Highest AQI recorded in
January135AQI
Lowest AQI recorded in
August64AQI
202499AQI
Highest AQI recorded in
March167AQI
Lowest AQI recorded in
July62AQI
2023133AQI
Highest AQI recorded in
December134AQI
Lowest AQI recorded in
November120AQI
2021120AQI
Highest AQI recorded in
March204AQI
Lowest AQI recorded in
July75AQI
2020122AQI
Highest AQI recorded in
December142AQI
Lowest AQI recorded in
October81AQI
Most & Least Polluted Years Over the Last 5 Years
Sewage Treatment Plant's annual 2025 AQI (100) shows an average percentage change of -14.3% (improved AQI) compared to previous years: 2020 (122), 2021 (120), 2023 (133), 2024 (99).