Huixian City No 2 Middle School, Chengguan, 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
Huixian City No 2 Middle School, Chengguan, Henan, China
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 63 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Huixian City No 2 Middle School, Chengguan, Henan, China
5 AM3rd Aug 2025
7 PM
4 AM4th Aug 2025
76AQI
61AQI
65AQI
60AQI
In the last 24 hours,
Huixian City No 2 Middle School's AQI reached its highest point of 76 at 9 AM during the Day, while the lowest point, 60, was recorded at 1 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Huixian City No 2 Middle School, Chengguan, Henan, China
34°C28/40°C
34°C29/40°C
32°C27/39°C
30°C25/37°C
31°C26/36°C
32°C27/38°C
32°C27/37°C
33°C28/39°C
35°C28/41°C
34°C30/41°C
35°C29/42°C
34°C29/39°C
33°C26/40°C
33°C27/40°C
32°C26/39°C
32°C27/40°C
30°C25/38°C
29°C26/36°C
28°C24/34°C
30°C25/35°C
32°C27/38°C
33°C27/39°C
32°C27/38°C
33°C29/39°C
32°C27/40°C
32°C25/40°C
32°C26/39°C
32°C26/40°C
32°C27/38°C
34°C28/43°C
--°C/°C
68AQI
68AQI
66AQI
66AQI
2025 Days Vs Air Quality
Huixian City No 2 Middle School, Chengguan, Henan, China
51%
110
39%
83
10%
21
0.4%
1
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 216 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
Huixian City No 2 Middle School, Chengguan, Henan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
155AQI
140AQI
160AQI
163AQI
130AQI
100AQI
97AQI
77AQI
85AQI
120AQI
89AQI
87AQI
120AQI
108AQI
88AQI
93AQI
127AQI
137AQI
139AQI
165AQI
188AQI
152AQI
155AQI
162AQI
166AQI
110AQI
82AQI
87AQI
180AQI
156AQI
162AQI
164AQI
179AQI
128AQI
124AQI
88AQI
102AQI
72AQI
80AQI
108AQI
132AQI
149AQI
106AQI
104AQI
122AQI
107AQI
92AQI
112AQI
121AQI
97AQI
122AQI
139AQI
142AQI
104AQI
150AQI
124AQI
146AQI
155AQI
167AQI
160AQI
104AQI
90AQI
95AQI
137AQI
132AQI
144AQI
140AQI
152AQI
149AQI
160AQI
143AQI
162AQI
111AQI
137AQI
74AQI
84AQI
74AQI
91AQI
64AQI
70AQI
74AQI
96AQI
381AQI
197AQI
149AQI
117AQI
124AQI
82AQI
99AQI
102AQI
96AQI
70AQI
95AQI
124AQI
78AQI
114AQI
118AQI
114AQI
131AQI
127AQI
143AQI
141AQI
104AQI
78AQI
92AQI
120AQI
136AQI
129AQI
127AQI
110AQI
108AQI
92AQI
116AQI
77AQI
109AQI
97AQI
103AQI
84AQI
86AQI
107AQI
86AQI
111AQI
73AQI
88AQI
142AQI
116AQI
139AQI
127AQI
103AQI
92AQI
78AQI
87AQI
106AQI
101AQI
78AQI
107AQI
125AQI
97AQI
125AQI
113AQI
126AQI
113AQI
135AQI
97AQI
105AQI
96AQI
108AQI
104AQI
102AQI
96AQI
96AQI
93AQI
103AQI
74AQI
81AQI
82AQI
91AQI
107AQI
107AQI
103AQI
88AQI
91AQI
86AQI
86AQI
81AQI
72AQI
62AQI
68AQI
66AQI
65AQI
70AQI
68AQI
62AQI
63AQI
67AQI
78AQI
69AQI
69AQI
63AQI
64AQI
62AQI
55AQI
57AQI
54AQI
58AQI
54AQI
54AQI
60AQI
63AQI
65AQI
75AQI
81AQI
78AQI
76AQI
77AQI
76AQI
80AQI
68AQI
70AQI
72AQI
73AQI
70AQI
70AQI
59AQI
59AQI
62AQI
61AQI
61AQI
61AQI
62AQI
59AQI
62AQI
64AQI
64AQI
63AQI
128AQI
123AQI
126AQI
108AQI
106AQI
78AQI
66AQI
64AQI
No. of days
2025104AQI
Highest AQI recorded in
January128AQI
Lowest AQI recorded in
August64AQI
2024103AQI
Highest AQI recorded in
February172AQI
Lowest AQI recorded in
July65AQI
2023150AQI
Highest AQI recorded in
December152AQI
Lowest AQI recorded in
November136AQI
2021151AQI
Highest AQI recorded in
January158AQI
Lowest AQI recorded in
March132AQI
2020130AQI
Highest AQI recorded in
December165AQI
Lowest AQI recorded in
August94AQI
Most & Least Polluted Years Over the Last 5 Years
Huixian City No 2 Middle School's annual 2025 AQI (104) shows an average percentage change of -20.3% (improved AQI) compared to previous years: 2020 (130), 2021 (151), 2023 (150), 2024 (103).