Cultural Square, Mudanjiang, Heilongjiang, 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
Cultural Square, Mudanjiang, Heilongjiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 54 of Moderate air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Cultural Square, Mudanjiang, Heilongjiang, China
6 AM19th Sep 2025
7 PM
5 AM20th Sep 2025
64AQI
41AQI
64AQI
53AQI
In the last 24 hours,
Cultural Square's AQI reached its highest point of 64 at 7 PM during the Day, while the lowest point, 41, was recorded at 10 AM during the Day between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Cultural Square, Mudanjiang, Heilongjiang, China
22°C14/30°C
20°C16/27°C
23°C16/32°C
21°C18/23°C
19°C17/22°C
18°C15/21°C
19°C12/26°C
18°C15/23°C
17°C15/20°C
21°C15/27°C
19°C16/23°C
20°C15/26°C
20°C13/27°C
21°C13/29°C
21°C14/30°C
22°C14/29°C
20°C13/25°C
17°C10/26°C
16°C9/24°C
15°C7/25°C
15°C8/23°C
16°C8/26°C
19°C12/29°C
19°C14/26°C
20°C13/28°C
17°C12/23°C
15°C11/21°C
13°C7/19°C
12°C4/20°C
14°C7/22°C
--°C/°C
55AQI
45AQI
59AQI
49AQI
2025 Days Vs Air Quality
Cultural Square, Mudanjiang, Heilongjiang, China
11%
30
67%
176
18%
48
3%
8
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 11%
Health Risk Level:
Extreme
In 2025, 11% of 263 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
Cultural Square, Mudanjiang, Heilongjiang, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
127AQI
119AQI
116AQI
122AQI
147AQI
144AQI
142AQI
117AQI
109AQI
117AQI
136AQI
141AQI
151AQI
127AQI
110AQI
104AQI
127AQI
144AQI
146AQI
162AQI
170AQI
171AQI
162AQI
155AQI
156AQI
174AQI
132AQI
129AQI
135AQI
112AQI
113AQI
116AQI
144AQI
128AQI
112AQI
100AQI
93AQI
96AQI
90AQI
91AQI
108AQI
123AQI
117AQI
102AQI
104AQI
98AQI
117AQI
85AQI
88AQI
86AQI
89AQI
85AQI
83AQI
83AQI
84AQI
85AQI
76AQI
95AQI
115AQI
84AQI
82AQI
80AQI
81AQI
87AQI
83AQI
81AQI
105AQI
121AQI
120AQI
141AQI
102AQI
95AQI
76AQI
75AQI
73AQI
74AQI
83AQI
100AQI
109AQI
117AQI
75AQI
91AQI
102AQI
92AQI
113AQI
89AQI
75AQI
71AQI
71AQI
85AQI
94AQI
90AQI
95AQI
111AQI
99AQI
78AQI
71AQI
75AQI
85AQI
95AQI
111AQI
91AQI
83AQI
69AQI
68AQI
65AQI
95AQI
79AQI
73AQI
88AQI
102AQI
71AQI
67AQI
79AQI
69AQI
65AQI
69AQI
101AQI
109AQI
86AQI
75AQI
68AQI
64AQI
55AQI
57AQI
58AQI
66AQI
74AQI
67AQI
57AQI
69AQI
67AQI
73AQI
72AQI
60AQI
62AQI
61AQI
58AQI
54AQI
60AQI
72AQI
61AQI
54AQI
55AQI
50AQI
53AQI
56AQI
65AQI
61AQI
68AQI
71AQI
67AQI
65AQI
60AQI
54AQI
59AQI
52AQI
54AQI
50AQI
60AQI
57AQI
51AQI
51AQI
58AQI
60AQI
63AQI
57AQI
58AQI
58AQI
56AQI
57AQI
53AQI
54AQI
52AQI
56AQI
57AQI
59AQI
61AQI
58AQI
57AQI
59AQI
53AQI
55AQI
55AQI
56AQI
54AQI
54AQI
53AQI
56AQI
55AQI
55AQI
55AQI
49AQI
54AQI
55AQI
52AQI
53AQI
49AQI
49AQI
49AQI
52AQI
54AQI
51AQI
55AQI
51AQI
55AQI
56AQI
54AQI
54AQI
53AQI
50AQI
53AQI
53AQI
55AQI
52AQI
48AQI
49AQI
43AQI
46AQI
46AQI
50AQI
51AQI
51AQI
48AQI
47AQI
46AQI
51AQI
51AQI
45AQI
47AQI
51AQI
46AQI
44AQI
44AQI
49AQI
46AQI
45AQI
41AQI
44AQI
43AQI
45AQI
52AQI
56AQI
52AQI
57AQI
50AQI
59AQI
56AQI
52AQI
52AQI
54AQI
54AQI
52AQI
55AQI
56AQI
58AQI
57AQI
51AQI
52AQI
49AQI
54AQI
54AQI
136AQI
100AQI
91AQI
84AQI
63AQI
57AQI
53AQI
48AQI
54AQI
No. of days
202577AQI
Highest AQI recorded in
January136AQI
Lowest AQI recorded in
August48AQI
202495AQI
Highest AQI recorded in
January130AQI
Lowest AQI recorded in
September66AQI
202393AQI
Highest AQI recorded in
January122AQI
Lowest AQI recorded in
August49AQI
202277AQI
Highest AQI recorded in
January122AQI
Lowest AQI recorded in
July39AQI
202178AQI
Highest AQI recorded in
January125AQI
Lowest AQI recorded in
July44AQI
202070AQI
Highest AQI recorded in
December116AQI
Lowest AQI recorded in
August43AQI
Most & Least Polluted Years Over the Last 6 Years
Cultural Square's annual 2025 AQI (77) shows an average percentage change of -5.3% (improved AQI) compared to previous years: 2020 (70), 2021 (78), 2022 (77), 2023 (93), 2024 (95).