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
Qiqihar, Heilongjiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 47 of Good air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Sep - 19th Sep 2025
Qiqihar, Heilongjiang, China
5 AM18th Sep 2025
6 PM
4 AM19th Sep 2025
51AQI
25AQI
59AQI
33AQI
In the last 24 hours,
Qiqihar's AQI reached its highest point of 59 at 8 PM during the Night, while the lowest point, 25, was recorded at 2 PM during the Day between 18th Sep and 19th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Qiqihar, Heilongjiang, China
21°C15/28°C
20°C17/25°C
19°C16/25°C
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
--°C/°C
52AQI
41AQI
57AQI
50AQI
2025 Days Vs Air Quality
Qiqihar, Heilongjiang, China
30%
78
52%
136
13%
33
3%
9
2%
5
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 30%
Health Risk Level:
High
In 2025, 30% of 262 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
Qiqihar, Heilongjiang, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
141AQI
110AQI
117AQI
158AQI
152AQI
128AQI
88AQI
97AQI
70AQI
85AQI
114AQI
173AQI
217AQI
118AQI
105AQI
97AQI
156AQI
177AQI
187AQI
180AQI
143AQI
145AQI
221AQI
250AQI
237AQI
220AQI
118AQI
124AQI
111AQI
102AQI
87AQI
133AQI
142AQI
97AQI
90AQI
90AQI
86AQI
53AQI
58AQI
61AQI
80AQI
132AQI
100AQI
94AQI
83AQI
92AQI
70AQI
62AQI
59AQI
61AQI
63AQI
67AQI
61AQI
61AQI
70AQI
60AQI
60AQI
66AQI
50AQI
55AQI
57AQI
64AQI
92AQI
130AQI
91AQI
128AQI
95AQI
148AQI
105AQI
108AQI
78AQI
67AQI
57AQI
59AQI
59AQI
67AQI
60AQI
80AQI
55AQI
57AQI
65AQI
154AQI
59AQI
97AQI
90AQI
65AQI
66AQI
46AQI
64AQI
75AQI
95AQI
92AQI
92AQI
134AQI
110AQI
113AQI
111AQI
93AQI
118AQI
153AQI
116AQI
79AQI
70AQI
63AQI
58AQI
58AQI
75AQI
48AQI
59AQI
73AQI
111AQI
51AQI
76AQI
45AQI
50AQI
55AQI
103AQI
55AQI
118AQI
50AQI
65AQI
46AQI
49AQI
39AQI
44AQI
48AQI
60AQI
71AQI
76AQI
62AQI
101AQI
116AQI
100AQI
87AQI
95AQI
120AQI
63AQI
75AQI
66AQI
73AQI
55AQI
58AQI
51AQI
56AQI
65AQI
73AQI
72AQI
90AQI
85AQI
96AQI
73AQI
60AQI
60AQI
46AQI
48AQI
40AQI
37AQI
35AQI
50AQI
34AQI
38AQI
39AQI
55AQI
54AQI
56AQI
61AQI
55AQI
51AQI
59AQI
55AQI
50AQI
46AQI
44AQI
51AQI
57AQI
60AQI
58AQI
65AQI
60AQI
62AQI
61AQI
56AQI
52AQI
50AQI
58AQI
50AQI
50AQI
49AQI
48AQI
53AQI
58AQI
59AQI
53AQI
48AQI
50AQI
49AQI
49AQI
48AQI
50AQI
49AQI
41AQI
44AQI
45AQI
54AQI
55AQI
47AQI
52AQI
45AQI
46AQI
43AQI
41AQI
42AQI
45AQI
48AQI
40AQI
43AQI
41AQI
38AQI
33AQI
35AQI
33AQI
32AQI
34AQI
47AQI
46AQI
43AQI
52AQI
43AQI
41AQI
39AQI
44AQI
43AQI
42AQI
38AQI
47AQI
41AQI
44AQI
41AQI
47AQI
45AQI
49AQI
54AQI
57AQI
57AQI
56AQI
62AQI
67AQI
66AQI
51AQI
50AQI
50AQI
53AQI
56AQI
57AQI
56AQI
63AQI
58AQI
48AQI
46AQI
43AQI
47AQI
143AQI
79AQI
80AQI
84AQI
72AQI
52AQI
49AQI
43AQI
55AQI
No. of days
202574AQI
Highest AQI recorded in
January143AQI
Lowest AQI recorded in
August43AQI
202474AQI
Highest AQI recorded in
November110AQI
Lowest AQI recorded in
September44AQI
202372AQI
Highest AQI recorded in
January109AQI
Lowest AQI recorded in
August43AQI
202273AQI
Highest AQI recorded in
January117AQI
Lowest AQI recorded in
September46AQI
202170AQI
Highest AQI recorded in
January92AQI
Lowest AQI recorded in
September46AQI
202069AQI
Highest AQI recorded in
April160AQI
Lowest AQI recorded in
August43AQI
Most & Least Polluted Years Over the Last 6 Years
Qiqihar's annual 2025 AQI (74) shows an average percentage change of 3.3% (worsened AQI) compared to previous years: 2020 (69), 2021 (70), 2022 (73), 2023 (72), 2024 (74).