Cotton Research Institute, Dengtalu, 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
Cotton Research Institute, Dengtalu, Henan, China
AQI Trends: Highest and Lowest
Same Day Analysis (17th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 62 of Moderate air quality, showing improvement over 2024 and 2023 on the same day.
Day & Night AQI Trend: 16th Aug - 17th Aug 2026
Cotton Research Institute, Dengtalu, Henan, China
5 AM16th Aug 2026
7 PM
4 AM17th Aug 2026
94AQI
42AQI
65AQI
48AQI
In the last 24 hours,
Cotton Research Institute's AQI reached its highest point of 94 at 11 AM during the Day, while the lowest point, 42, was recorded at 1 PM during the Day between 16th Aug and 17th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Cotton Research Institute, Dengtalu, Henan, China
29°C23/37°C
29°C24/36°C
28°C22/38°C
28°C23/35°C
28°C23/34°C
27°C24/32°C
28°C23/34°C
29°C25/35°C
26°C24/29°C
26°C24/30°C
28°C24/34°C
27°C24/30°C
28°C25/33°C
30°C27/34°C
31°C27/37°C
31°C26/36°C
30°C25/37°C
29°C23/35°C
30°C25/37°C
32°C27/39°C
28°C24/33°C
26°C20/33°C
28°C21/34°C
24°C23/24°C
22°C22/23°C
22°C21/24°C
25°C21/29°C
27°C22/32°C
27°C23/33°C
14°C12/16°C
66AQI
60AQI
63AQI
59AQI
2026 Days Vs Air Quality
Cotton Research Institute, Dengtalu, Henan, China
6%
14
55%
127
23%
53
15%
34
0.4%
1
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Under WHO’s Safe Air Quality Limits: 6%
Health Risk Level:
Extreme
In 2026, 6% of 229 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
Cotton Research Institute, Dengtalu, Henan, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
97AQI (US)
160AQI (US)
182AQI (US)
195AQI (US)
204AQI (US)
95AQI (US)
78AQI (US)
116AQI (US)
90AQI (US)
70AQI (US)
54AQI (US)
96AQI (US)
127AQI (US)
165AQI (US)
143AQI (US)
168AQI (US)
142AQI (US)
126AQI (US)
104AQI (US)
66AQI (US)
136AQI (US)
147AQI (US)
151AQI (US)
180AQI (US)
168AQI (US)
166AQI (US)
180AQI (US)
189AQI (US)
132AQI (US)
146AQI (US)
161AQI (US)
158AQI (US)
171AQI (US)
171AQI (US)
167AQI (US)
145AQI (US)
85AQI (US)
113AQI (US)
147AQI (US)
146AQI (US)
127AQI (US)
125AQI (US)
152AQI (US)
163AQI (US)
169AQI (US)
76AQI (US)
71AQI (US)
131AQI (US)
105AQI (US)
86AQI (US)
77AQI (US)
100AQI (US)
97AQI (US)
81AQI (US)
92AQI (US)
77AQI (US)
96AQI (US)
151AQI (US)
140AQI (US)
125AQI (US)
151AQI (US)
166AQI (US)
162AQI (US)
153AQI (US)
138AQI (US)
115AQI (US)
158AQI (US)
145AQI (US)
166AQI (US)
166AQI (US)
174AQI (US)
173AQI (US)
149AQI (US)
85AQI (US)
112AQI (US)
148AQI (US)
91AQI (US)
106AQI (US)
157AQI (US)
152AQI (US)
114AQI (US)
126AQI (US)
155AQI (US)
153AQI (US)
134AQI (US)
159AQI (US)
137AQI (US)
83AQI (US)
116AQI (US)
125AQI (US)
135AQI (US)
147AQI (US)
92AQI (US)
57AQI (US)
77AQI (US)
85AQI (US)
90AQI (US)
123AQI (US)
109AQI (US)
111AQI (US)
106AQI (US)
118AQI (US)
73AQI (US)
105AQI (US)
93AQI (US)
146AQI (US)
136AQI (US)
104AQI (US)
89AQI (US)
92AQI (US)
62AQI (US)
63AQI (US)
91AQI (US)
80AQI (US)
72AQI (US)
103AQI (US)
112AQI (US)
83AQI (US)
60AQI (US)
80AQI (US)
87AQI (US)
59AQI (US)
47AQI (US)
69AQI (US)
88AQI (US)
97AQI (US)
68AQI (US)
58AQI (US)
67AQI (US)
82AQI (US)
96AQI (US)
123AQI (US)
131AQI (US)
132AQI (US)
118AQI (US)
76AQI (US)
65AQI (US)
57AQI (US)
54AQI (US)
63AQI (US)
68AQI (US)
79AQI (US)
71AQI (US)
72AQI (US)
66AQI (US)
48AQI (US)
74AQI (US)
61AQI (US)
54AQI (US)
62AQI (US)
70AQI (US)
90AQI (US)
112AQI (US)
121AQI (US)
45AQI (US)
107AQI (US)
69AQI (US)
39AQI (US)
55AQI (US)
51AQI (US)
69AQI (US)
82AQI (US)
94AQI (US)
74AQI (US)
88AQI (US)
83AQI (US)
75AQI (US)
77AQI (US)
91AQI (US)
52AQI (US)
57AQI (US)
65AQI (US)
40AQI (US)
76AQI (US)
55AQI (US)
69AQI (US)
42AQI (US)
89AQI (US)
75AQI (US)
74AQI (US)
89AQI (US)
79AQI (US)
97AQI (US)
77AQI (US)
58AQI (US)
67AQI (US)
62AQI (US)
54AQI (US)
57AQI (US)
81AQI (US)
57AQI (US)
64AQI (US)
72AQI (US)
67AQI (US)
75AQI (US)
68AQI (US)
69AQI (US)
49AQI (US)
67AQI (US)
82AQI (US)
91AQI (US)
81AQI (US)
63AQI (US)
41AQI (US)
62AQI (US)
74AQI (US)
80AQI (US)
44AQI (US)
57AQI (US)
31AQI (US)
40AQI (US)
55AQI (US)
66AQI (US)
66AQI (US)
50AQI (US)
52AQI (US)
59AQI (US)
85AQI (US)
92AQI (US)
66AQI (US)
49AQI (US)
66AQI (US)
78AQI (US)
56AQI (US)
33AQI (US)
58AQI (US)
70AQI (US)
66AQI (US)
62AQI (US)
137AQI (US)
122AQI (US)
139AQI (US)
96AQI (US)
76AQI (US)
74AQI (US)
65AQI (US)
63AQI (US)
No. of days
202698AQI (US)
Highest AQI (US) recorded in
March139AQI (US)
Lowest AQI (US) recorded in
August63AQI (US)
2025103AQI (US)
Highest AQI (US) recorded in
December149AQI (US)
Lowest AQI (US) recorded in
August63AQI (US)
2024110AQI (US)
Highest AQI (US) recorded in
January152AQI (US)
Lowest AQI (US) recorded in
July67AQI (US)
2023117AQI (US)
Highest AQI (US) recorded in
February170AQI (US)
Lowest AQI (US) recorded in
August72AQI (US)
2022122AQI (US)
Highest AQI (US) recorded in
January169AQI (US)
Lowest AQI (US) recorded in
July66AQI (US)
2021121AQI (US)
Highest AQI (US) recorded in
March193AQI (US)
Lowest AQI (US) recorded in
July70AQI (US)
2020117AQI (US)
Highest AQI (US) recorded in
December172AQI (US)
Lowest AQI (US) recorded in
August80AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Cotton Research Institute's annual 2026 AQI (US) (98) shows an average percentage change of -14.4% (improved AQI (US)) compared to previous years: 2020 (117), 2021 (121), 2022 (122), 2023 (117), 2024 (110), 2025 (103).