Water Supply Company, Zhengzhou, Henan, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Water Supply Company, Zhengzhou, Henan, China
AQI Trends: Highest and Lowest
Same Day Analysis (14th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 111 of Poor air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Oct - 15th Oct 2025
Water Supply Company, Zhengzhou, Henan, China
6 AM14th Oct 2025
6 PM
5 AM15th Oct 2025
159AQI
103AQI
127AQI
82AQI
In the last 24 hours,
Water Supply Company's AQI reached its highest point of 159 at 12 PM during the Day, while the lowest point, 82, was recorded at 3 AM during the Night between 14th Oct and 15th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Water Supply Company, Zhengzhou, Henan, China
27°C24/31°C
24°C20/27°C
19°C16/23°C
15°C14/17°C
15°C14/17°C
19°C14/25°C
18°C15/19°C
15°C14/15°C
15°C14/16°C
20°C15/26°C
22°C17/27°C
19°C18/21°C
18°C18/19°C
20°C18/22°C
22°C18/27°C
24°C19/30°C
20°C16/22°C
17°C16/17°C
20°C17/24°C
18°C17/19°C
18°C18/19°C
17°C15/19°C
18°C15/22°C
18°C14/19°C
12°C11/12°C
12°C12/12°C
14°C12/15°C
14°C13/15°C
16°C13/21°C
18°C14/22°C
--°C/°C
69AQI
59AQI
70AQI
58AQI
2025 Days Vs Air Quality
Water Supply Company, Zhengzhou, Henan, China
4%
12
59%
168
28%
80
9%
26
0.3%
1
Total number of days with different AQI categories in last 288 days in 2025 (77 days remaining)
Under WHO’s Safe Air Quality Limits: 4%
Health Risk Level:
Extreme
In 2025, 4% of 288 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
Water Supply Company, Zhengzhou, Henan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
156AQI
144AQI
160AQI
161AQI
135AQI
100AQI
105AQI
79AQI
93AQI
123AQI
89AQI
86AQI
123AQI
111AQI
83AQI
89AQI
125AQI
132AQI
131AQI
164AQI
190AQI
164AQI
154AQI
170AQI
167AQI
99AQI
84AQI
87AQI
187AQI
168AQI
169AQI
167AQI
184AQI
111AQI
103AQI
80AQI
95AQI
71AQI
75AQI
107AQI
131AQI
152AQI
99AQI
103AQI
110AQI
104AQI
89AQI
111AQI
130AQI
96AQI
132AQI
140AQI
148AQI
127AQI
155AQI
126AQI
153AQI
155AQI
170AQI
153AQI
99AQI
88AQI
104AQI
138AQI
125AQI
144AQI
142AQI
154AQI
145AQI
160AQI
141AQI
170AQI
103AQI
139AQI
74AQI
84AQI
75AQI
82AQI
64AQI
70AQI
75AQI
97AQI
416AQI
122AQI
140AQI
109AQI
130AQI
87AQI
99AQI
103AQI
95AQI
75AQI
102AQI
114AQI
80AQI
114AQI
125AQI
139AQI
128AQI
134AQI
132AQI
169AQI
131AQI
88AQI
99AQI
123AQI
137AQI
135AQI
128AQI
112AQI
109AQI
102AQI
131AQI
85AQI
122AQI
100AQI
108AQI
87AQI
86AQI
115AQI
91AQI
128AQI
80AQI
94AQI
122AQI
132AQI
152AQI
138AQI
114AQI
105AQI
84AQI
100AQI
113AQI
103AQI
90AQI
107AQI
159AQI
108AQI
140AQI
118AQI
138AQI
114AQI
140AQI
100AQI
109AQI
96AQI
113AQI
110AQI
110AQI
97AQI
91AQI
91AQI
87AQI
77AQI
90AQI
78AQI
90AQI
109AQI
101AQI
97AQI
86AQI
88AQI
82AQI
85AQI
73AQI
69AQI
73AQI
76AQI
63AQI
59AQI
61AQI
63AQI
51AQI
59AQI
66AQI
83AQI
63AQI
63AQI
58AQI
52AQI
54AQI
48AQI
44AQI
46AQI
54AQI
48AQI
54AQI
56AQI
58AQI
64AQI
71AQI
76AQI
76AQI
72AQI
71AQI
75AQI
69AQI
57AQI
64AQI
66AQI
69AQI
65AQI
61AQI
60AQI
61AQI
65AQI
64AQI
64AQI
60AQI
59AQI
53AQI
58AQI
63AQI
64AQI
64AQI
68AQI
70AQI
66AQI
63AQI
64AQI
57AQI
60AQI
59AQI
61AQI
63AQI
63AQI
64AQI
56AQI
59AQI
63AQI
61AQI
57AQI
58AQI
60AQI
60AQI
59AQI
68AQI
64AQI
66AQI
63AQI
62AQI
62AQI
62AQI
63AQI
62AQI
63AQI
45AQI
58AQI
66AQI
68AQI
62AQI
59AQI
63AQI
56AQI
57AQI
63AQI
62AQI
64AQI
52AQI
50AQI
48AQI
44AQI
55AQI
67AQI
47AQI
54AQI
56AQI
67AQI
104AQI
47AQI
63AQI
66AQI
74AQI
80AQI
63AQI
89AQI
80AQI
71AQI
51AQI
70AQI
97AQI
39AQI
45AQI
72AQI
65AQI
59AQI
111AQI
130AQI
122AQI
124AQI
114AQI
113AQI
75AQI
62AQI
62AQI
60AQI
71AQI
No. of days
202594AQI
Highest AQI recorded in
January130AQI
Lowest AQI recorded in
September60AQI
2024106AQI
Highest AQI recorded in
January148AQI
Lowest AQI recorded in
August64AQI
2023106AQI
Highest AQI recorded in
January150AQI
Lowest AQI recorded in
July64AQI
2022114AQI
Highest AQI recorded in
January179AQI
Lowest AQI recorded in
August64AQI
2021110AQI
Highest AQI recorded in
March183AQI
Lowest AQI recorded in
July66AQI
2020107AQI
Highest AQI recorded in
December145AQI
Lowest AQI recorded in
August75AQI
Most & Least Polluted Years Over the Last 6 Years
Water Supply Company's annual 2025 AQI (94) shows an average percentage change of -13.06% (improved AQI) compared to previous years: 2020 (107), 2021 (110), 2022 (114), 2023 (106), 2024 (106).