Anju Compound, Qiqihar, 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
Anju Compound, Qiqihar, Heilongjiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (20th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 45 of Good air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Sep - 22nd Sep 2025
Anju Compound, Qiqihar, Heilongjiang, China
5 AM21st Sep 2025
6 PM
4 AM22nd Sep 2025
53AQI
22AQI
65AQI
32AQI
In the last 24 hours,
Anju Compound's AQI reached its highest point of 65 at 9 PM during the Night, while the lowest point, 22, was recorded at 2 PM during the Day between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Anju Compound, Qiqihar, Heilongjiang, China
21°C15/28°C
21°C16/27°C
22°C17/28°C
21°C15/27°C
22°C16/28°C
22°C17/27°C
21°C17/25°C
23°C16/30°C
21°C16/28°C
21°C14/27°C
22°C16/28°C
22°C17/29°C
24°C16/32°C
24°C17/30°C
19°C13/26°C
16°C11/19°C
14°C9/19°C
15°C9/21°C
16°C10/23°C
18°C12/24°C
19°C15/25°C
19°C14/25°C
18°C13/25°C
17°C12/22°C
12°C9/14°C
14°C7/21°C
16°C10/22°C
17°C12/25°C
15°C9/20°C
16°C11/22°C
--°C/°C
54AQI
41AQI
61AQI
54AQI
2025 Days Vs Air Quality
Anju Compound, Qiqihar, Heilongjiang, China
32%
85
49%
129
13%
34
4%
10
2%
5
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 32%
Health Risk Level:
High
In 2025, 32% of 265 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Anju Compound, Qiqihar, Heilongjiang, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
141AQI
108AQI
116AQI
159AQI
152AQI
128AQI
89AQI
102AQI
73AQI
87AQI
118AQI
176AQI
219AQI
122AQI
105AQI
98AQI
159AQI
179AQI
189AQI
181AQI
148AQI
145AQI
228AQI
251AQI
241AQI
221AQI
118AQI
125AQI
117AQI
104AQI
89AQI
128AQI
146AQI
102AQI
91AQI
95AQI
91AQI
52AQI
61AQI
61AQI
82AQI
133AQI
97AQI
95AQI
82AQI
94AQI
72AQI
64AQI
62AQI
65AQI
64AQI
68AQI
63AQI
62AQI
69AQI
61AQI
58AQI
66AQI
50AQI
56AQI
58AQI
66AQI
94AQI
132AQI
90AQI
133AQI
96AQI
153AQI
108AQI
117AQI
79AQI
68AQI
59AQI
61AQI
57AQI
69AQI
59AQI
78AQI
54AQI
57AQI
68AQI
155AQI
55AQI
94AQI
90AQI
79AQI
77AQI
53AQI
75AQI
75AQI
95AQI
89AQI
91AQI
134AQI
112AQI
111AQI
112AQI
91AQI
117AQI
153AQI
115AQI
78AQI
67AQI
58AQI
54AQI
55AQI
73AQI
46AQI
55AQI
72AQI
108AQI
49AQI
73AQI
43AQI
50AQI
53AQI
103AQI
52AQI
120AQI
49AQI
66AQI
44AQI
48AQI
39AQI
41AQI
48AQI
60AQI
71AQI
75AQI
60AQI
101AQI
115AQI
99AQI
87AQI
95AQI
121AQI
64AQI
76AQI
66AQI
69AQI
58AQI
61AQI
53AQI
55AQI
66AQI
71AQI
72AQI
88AQI
86AQI
95AQI
75AQI
61AQI
61AQI
49AQI
48AQI
39AQI
38AQI
34AQI
49AQI
33AQI
36AQI
38AQI
59AQI
50AQI
55AQI
61AQI
56AQI
50AQI
58AQI
49AQI
46AQI
40AQI
36AQI
50AQI
59AQI
61AQI
58AQI
66AQI
60AQI
61AQI
60AQI
52AQI
49AQI
49AQI
58AQI
48AQI
48AQI
45AQI
45AQI
52AQI
59AQI
60AQI
51AQI
46AQI
47AQI
46AQI
46AQI
45AQI
49AQI
46AQI
41AQI
42AQI
43AQI
54AQI
58AQI
46AQI
54AQI
44AQI
44AQI
42AQI
40AQI
43AQI
45AQI
48AQI
40AQI
42AQI
40AQI
37AQI
34AQI
35AQI
34AQI
31AQI
33AQI
47AQI
45AQI
42AQI
53AQI
43AQI
40AQI
39AQI
45AQI
43AQI
42AQI
38AQI
48AQI
41AQI
45AQI
41AQI
47AQI
45AQI
49AQI
55AQI
57AQI
58AQI
56AQI
62AQI
68AQI
68AQI
50AQI
49AQI
51AQI
53AQI
56AQI
57AQI
56AQI
63AQI
58AQI
48AQI
46AQI
42AQI
47AQI
48AQI
45AQI
145AQI
80AQI
83AQI
83AQI
72AQI
51AQI
48AQI
43AQI
54AQI
No. of days
202574AQI
Highest AQI recorded in
January145AQI
Lowest AQI recorded in
August43AQI
202474AQI
Highest AQI recorded in
November110AQI
Lowest AQI recorded in
September44AQI
202376AQI
Highest AQI recorded in
January112AQI
Lowest AQI recorded in
August52AQI
202270AQI
Highest AQI recorded in
January125AQI
Lowest AQI recorded in
September46AQI
202170AQI
Highest AQI recorded in
January99AQI
Lowest AQI recorded in
September44AQI
202072AQI
Highest AQI recorded in
April166AQI
Lowest AQI recorded in
June44AQI
Most & Least Polluted Years Over the Last 6 Years
Anju Compound's annual 2025 AQI (74) shows an average percentage change of 1.8% (worsened AQI) compared to previous years: 2020 (72), 2021 (70), 2022 (70), 2023 (76), 2024 (74).