Heze, Shandong, 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
Heze, Shandong, China
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 72 of Moderate air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 22nd Sep - 23rd Sep 2025
Heze, Shandong, China
5 AM22nd Sep 2025
6 PM
4 AM23rd Sep 2025
AQI
AQI
64AQI
52AQI
In the last 24 hours,
Heze's AQI reached its highest point of 64 at 5 AM during the Night, while the lowest point, 52, was recorded at 6 PM during the Night between 22nd Sep and 23rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Heze, Shandong, China
24°C22/28°C
25°C21/31°C
27°C23/33°C
29°C23/35°C
30°C25/37°C
28°C24/35°C
27°C23/32°C
25°C22/31°C
27°C21/34°C
26°C20/32°C
23°C21/24°C
22°C20/25°C
25°C21/31°C
22°C19/26°C
25°C20/31°C
21°C17/23°C
23°C17/31°C
24°C18/29°C
21°C18/23°C
19°C18/20°C
23°C18/30°C
25°C20/31°C
26°C22/30°C
22°C18/24°C
19°C16/22°C
17°C15/21°C
15°C13/17°C
18°C12/24°C
18°C16/22°C
--°C/°C
--°C/°C
64AQI
54AQI
61AQI
58AQI
2025 Days Vs Air Quality
Heze, Shandong, China
3%
7
58%
154
27%
72
10%
27
1%
3
0.3%
1
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 3%
Health Risk Level:
Extreme
In 2025, 3% of 265 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
Heze, Shandong, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
179AQI
144AQI
176AQI
194AQI
155AQI
103AQI
123AQI
81AQI
94AQI
113AQI
123AQI
116AQI
142AQI
219AQI
105AQI
123AQI
134AQI
152AQI
151AQI
166AQI
192AQI
172AQI
168AQI
196AQI
164AQI
136AQI
89AQI
119AQI
205AQI
164AQI
165AQI
161AQI
178AQI
158AQI
129AQI
95AQI
121AQI
75AQI
84AQI
99AQI
119AQI
144AQI
135AQI
133AQI
146AQI
146AQI
100AQI
117AQI
122AQI
99AQI
130AQI
130AQI
137AQI
94AQI
114AQI
123AQI
137AQI
153AQI
155AQI
172AQI
81AQI
89AQI
77AQI
103AQI
127AQI
124AQI
144AQI
150AQI
156AQI
159AQI
162AQI
135AQI
101AQI
133AQI
78AQI
87AQI
68AQI
103AQI
80AQI
79AQI
87AQI
111AQI
382AQI
212AQI
164AQI
137AQI
140AQI
92AQI
103AQI
105AQI
105AQI
66AQI
96AQI
126AQI
78AQI
111AQI
109AQI
138AQI
139AQI
143AQI
139AQI
190AQI
117AQI
84AQI
89AQI
113AQI
132AQI
137AQI
101AQI
111AQI
98AQI
96AQI
114AQI
79AQI
93AQI
87AQI
100AQI
77AQI
80AQI
97AQI
80AQI
103AQI
64AQI
84AQI
172AQI
122AQI
124AQI
108AQI
79AQI
69AQI
75AQI
80AQI
90AQI
92AQI
80AQI
109AQI
188AQI
103AQI
127AQI
107AQI
120AQI
119AQI
123AQI
102AQI
95AQI
89AQI
98AQI
96AQI
96AQI
92AQI
108AQI
92AQI
103AQI
78AQI
91AQI
87AQI
90AQI
100AQI
116AQI
100AQI
83AQI
90AQI
81AQI
79AQI
81AQI
67AQI
59AQI
67AQI
66AQI
58AQI
63AQI
66AQI
57AQI
61AQI
66AQI
78AQI
65AQI
67AQI
59AQI
51AQI
52AQI
48AQI
50AQI
47AQI
50AQI
51AQI
60AQI
60AQI
65AQI
53AQI
77AQI
85AQI
75AQI
70AQI
72AQI
70AQI
73AQI
67AQI
67AQI
73AQI
70AQI
66AQI
53AQI
55AQI
57AQI
60AQI
58AQI
56AQI
55AQI
50AQI
59AQI
60AQI
58AQI
56AQI
58AQI
64AQI
63AQI
68AQI
69AQI
66AQI
54AQI
59AQI
58AQI
52AQI
55AQI
61AQI
61AQI
53AQI
58AQI
60AQI
60AQI
53AQI
54AQI
56AQI
55AQI
57AQI
60AQI
63AQI
62AQI
63AQI
61AQI
63AQI
54AQI
55AQI
59AQI
61AQI
64AQI
64AQI
62AQI
67AQI
61AQI
57AQI
64AQI
57AQI
55AQI
67AQI
63AQI
59AQI
53AQI
49AQI
55AQI
45AQI
53AQI
72AQI
147AQI
126AQI
127AQI
108AQI
103AQI
76AQI
62AQI
59AQI
59AQI
No. of days
202597AQI
Highest AQI recorded in
January147AQI
Lowest AQI recorded in
September59AQI
2024106AQI
Highest AQI recorded in
January158AQI
Lowest AQI recorded in
July63AQI
2023110AQI
Highest AQI recorded in
January172AQI
Lowest AQI recorded in
July60AQI
2022115AQI
Highest AQI recorded in
January181AQI
Lowest AQI recorded in
July71AQI
2021120AQI
Highest AQI recorded in
March186AQI
Lowest AQI recorded in
July63AQI
2020113AQI
Highest AQI recorded in
December163AQI
Lowest AQI recorded in
August79AQI
Most & Least Polluted Years Over the Last 6 Years
Heze's annual 2025 AQI (97) shows an average percentage change of -13.5% (improved AQI) compared to previous years: 2020 (113), 2021 (120), 2022 (115), 2023 (110), 2024 (106).