Environment Protection Office, Huazhou, Henan, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Environment Protection Office, Huazhou, Henan, China
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 55 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Sep - 29th Sep 2025
Environment Protection Office, Huazhou, Henan, China
6 AM28th Sep 2025
6 PM
5 AM29th Sep 2025
60AQI
39AQI
55AQI
30AQI
In the last 24 hours,
Environment Protection Office's AQI reached its highest point of 60 at 6 AM during the Day, while the lowest point, 30, was recorded at 9 PM during the Night between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Environment Protection Office, Huazhou, Henan, China
24°C22/26°C
25°C22/30°C
27°C22/32°C
28°C23/34°C
26°C22/30°C
24°C22/29°C
25°C22/30°C
22°C20/23°C
23°C20/29°C
21°C19/23°C
22°C19/26°C
23°C21/26°C
22°C18/24°C
20°C18/24°C
23°C19/28°C
25°C20/30°C
26°C22/30°C
27°C23/32°C
19°C16/20°C
16°C15/17°C
15°C14/16°C
18°C13/24°C
19°C16/21°C
16°C15/16°C
16°C15/16°C
20°C16/25°C
20°C17/22°C
19°C18/19°C
20°C18/22°C
21°C18/23°C
--°C/°C
57AQI
51AQI
58AQI
52AQI
2025 Days Vs Air Quality
Environment Protection Office, Huazhou, Henan, China
7%
20
51%
138
31%
83
11%
29
0.3%
1
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 7%
Health Risk Level:
Extreme
In 2025, 7% of 272 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
Environment Protection Office, Huazhou, Henan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
165AQI
168AQI
172AQI
194AQI
154AQI
148AQI
134AQI
141AQI
115AQI
144AQI
137AQI
137AQI
159AQI
132AQI
108AQI
129AQI
135AQI
155AQI
159AQI
167AQI
179AQI
207AQI
171AQI
145AQI
148AQI
96AQI
106AQI
122AQI
194AQI
170AQI
175AQI
165AQI
163AQI
138AQI
135AQI
106AQI
103AQI
98AQI
81AQI
101AQI
129AQI
140AQI
113AQI
138AQI
139AQI
150AQI
118AQI
131AQI
120AQI
152AQI
147AQI
160AQI
158AQI
166AQI
153AQI
154AQI
157AQI
158AQI
167AQI
163AQI
96AQI
99AQI
93AQI
113AQI
120AQI
139AQI
138AQI
148AQI
146AQI
157AQI
147AQI
158AQI
109AQI
112AQI
88AQI
87AQI
79AQI
83AQI
75AQI
81AQI
83AQI
100AQI
96AQI
101AQI
125AQI
121AQI
103AQI
101AQI
102AQI
106AQI
106AQI
94AQI
112AQI
135AQI
108AQI
120AQI
113AQI
117AQI
126AQI
111AQI
110AQI
194AQI
138AQI
106AQI
109AQI
107AQI
118AQI
110AQI
99AQI
105AQI
94AQI
102AQI
122AQI
100AQI
107AQI
98AQI
100AQI
83AQI
92AQI
84AQI
88AQI
94AQI
79AQI
89AQI
82AQI
138AQI
138AQI
117AQI
109AQI
94AQI
94AQI
94AQI
102AQI
97AQI
102AQI
96AQI
125AQI
120AQI
130AQI
115AQI
108AQI
94AQI
111AQI
102AQI
104AQI
104AQI
109AQI
105AQI
97AQI
88AQI
74AQI
83AQI
76AQI
86AQI
93AQI
87AQI
93AQI
80AQI
80AQI
75AQI
75AQI
76AQI
81AQI
80AQI
74AQI
74AQI
73AQI
74AQI
59AQI
50AQI
56AQI
54AQI
41AQI
53AQI
58AQI
61AQI
49AQI
57AQI
54AQI
49AQI
56AQI
51AQI
51AQI
45AQI
53AQI
52AQI
56AQI
55AQI
64AQI
57AQI
60AQI
75AQI
76AQI
66AQI
64AQI
68AQI
69AQI
63AQI
63AQI
63AQI
65AQI
64AQI
57AQI
46AQI
45AQI
56AQI
57AQI
51AQI
54AQI
55AQI
58AQI
60AQI
63AQI
61AQI
64AQI
67AQI
68AQI
67AQI
64AQI
61AQI
52AQI
57AQI
53AQI
55AQI
48AQI
57AQI
51AQI
48AQI
52AQI
57AQI
57AQI
49AQI
51AQI
50AQI
54AQI
55AQI
60AQI
60AQI
59AQI
62AQI
60AQI
60AQI
54AQI
55AQI
58AQI
64AQI
64AQI
62AQI
57AQI
61AQI
50AQI
53AQI
60AQI
51AQI
48AQI
58AQI
58AQI
58AQI
64AQI
50AQI
49AQI
41AQI
53AQI
64AQI
50AQI
42AQI
44AQI
60AQI
51AQI
48AQI
55AQI
151AQI
137AQI
112AQI
111AQI
103AQI
69AQI
59AQI
57AQI
55AQI
No. of days
202595AQI
Highest AQI recorded in
January151AQI
Lowest AQI recorded in
September55AQI
202495AQI
Highest AQI recorded in
January141AQI
Lowest AQI recorded in
July56AQI
202393AQI
Highest AQI recorded in
December94AQI
Lowest AQI recorded in
November81AQI
2021158AQI
Highest AQI recorded in
January179AQI
Lowest AQI recorded in
March89AQI
2020107AQI
Highest AQI recorded in
December167AQI
Lowest AQI recorded in
July67AQI
Most & Least Polluted Years Over the Last 5 Years
Environment Protection Office's annual 2025 AQI (95) shows an average percentage change of -12.4% (improved AQI) compared to previous years: 2020 (107), 2021 (158), 2023 (93), 2024 (95).