Yichun, Heilongjiang, 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
Yichun, Heilongjiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (6th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 56 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Oct - 8th Oct 2025
Yichun, Heilongjiang, China
7 AM7th Oct 2025
7 PM
6 AM8th Oct 2025
AQI
AQI
99AQI
62AQI
In the last 24 hours,
Yichun's AQI reached its highest point of 99 at 12 AM during the Night, while the lowest point, undefined, was recorded at 6 AM during the Night between 7th Oct and 8th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Yichun, Heilongjiang, China
13°C8/19°C
13°C8/18°C
11°C8/17°C
14°C8/21°C
14°C12/18°C
16°C11/23°C
15°C12/19°C
13°C10/17°C
10°C8/13°C
10°C5/16°C
11°C5/17°C
13°C7/20°C
10°C6/16°C
11°C4/18°C
13°C7/20°C
15°C8/22°C
13°C10/17°C
12°C10/15°C
14°C9/20°C
15°C9/22°C
12°C5/18°C
12°C4/21°C
15°C9/22°C
10°C3/13°C
10°C1/20°C
15°C8/23°C
15°C8/19°C
6°C2/10°C
5°C0/11°C
--°C/°C
--°C/°C
66AQI
56AQI
73AQI
67AQI
2025 Days Vs Air Quality
Yichun, Heilongjiang, China
25%
69
58%
161
14%
40
3%
9
Total number of days with different AQI categories in last 280 days in 2025 (85 days remaining)
Under WHO’s Safe Air Quality Limits: 25%
Health Risk Level:
Very high
In 2025, 25% of 280 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Yichun, Heilongjiang, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
125AQI
115AQI
130AQI
161AQI
141AQI
143AQI
120AQI
104AQI
96AQI
120AQI
131AQI
146AQI
151AQI
174AQI
137AQI
115AQI
135AQI
133AQI
156AQI
153AQI
151AQI
143AQI
152AQI
161AQI
172AQI
146AQI
117AQI
115AQI
109AQI
96AQI
109AQI
118AQI
132AQI
146AQI
117AQI
107AQI
100AQI
74AQI
82AQI
86AQI
89AQI
125AQI
127AQI
110AQI
91AQI
93AQI
96AQI
72AQI
85AQI
76AQI
77AQI
76AQI
70AQI
76AQI
77AQI
89AQI
74AQI
105AQI
87AQI
79AQI
73AQI
81AQI
87AQI
91AQI
88AQI
83AQI
81AQI
98AQI
108AQI
102AQI
89AQI
75AQI
62AQI
61AQI
59AQI
63AQI
63AQI
97AQI
108AQI
82AQI
89AQI
95AQI
74AQI
76AQI
73AQI
73AQI
63AQI
61AQI
63AQI
82AQI
93AQI
95AQI
105AQI
99AQI
91AQI
95AQI
87AQI
87AQI
113AQI
121AQI
116AQI
121AQI
87AQI
75AQI
59AQI
67AQI
103AQI
80AQI
81AQI
82AQI
99AQI
67AQI
77AQI
71AQI
72AQI
58AQI
86AQI
87AQI
104AQI
96AQI
94AQI
71AQI
63AQI
55AQI
53AQI
57AQI
62AQI
71AQI
64AQI
61AQI
76AQI
107AQI
88AQI
92AQI
84AQI
72AQI
66AQI
63AQI
59AQI
59AQI
59AQI
56AQI
56AQI
50AQI
52AQI
57AQI
63AQI
73AQI
72AQI
76AQI
74AQI
61AQI
60AQI
60AQI
54AQI
53AQI
51AQI
51AQI
54AQI
54AQI
51AQI
49AQI
52AQI
55AQI
58AQI
63AQI
60AQI
58AQI
62AQI
58AQI
56AQI
48AQI
48AQI
52AQI
58AQI
62AQI
57AQI
59AQI
60AQI
57AQI
60AQI
54AQI
52AQI
55AQI
54AQI
53AQI
56AQI
52AQI
51AQI
51AQI
51AQI
56AQI
54AQI
50AQI
49AQI
47AQI
47AQI
48AQI
47AQI
46AQI
47AQI
48AQI
48AQI
50AQI
53AQI
53AQI
52AQI
49AQI
48AQI
49AQI
46AQI
45AQI
49AQI
53AQI
45AQI
44AQI
44AQI
41AQI
39AQI
37AQI
37AQI
39AQI
40AQI
43AQI
41AQI
39AQI
47AQI
45AQI
40AQI
40AQI
43AQI
42AQI
42AQI
38AQI
41AQI
40AQI
43AQI
37AQI
38AQI
40AQI
40AQI
47AQI
53AQI
50AQI
48AQI
49AQI
64AQI
57AQI
48AQI
47AQI
46AQI
48AQI
50AQI
49AQI
52AQI
55AQI
53AQI
44AQI
49AQI
44AQI
46AQI
47AQI
47AQI
46AQI
49AQI
57AQI
57AQI
51AQI
40AQI
46AQI
48AQI
53AQI
65AQI
66AQI
56AQI
66AQI
78AQI
60AQI
56AQI
134AQI
95AQI
80AQI
89AQI
68AQI
56AQI
50AQI
42AQI
50AQI
64AQI
No. of days
202574AQI
Highest AQI recorded in
January134AQI
Lowest AQI recorded in
August42AQI
202468AQI
Highest AQI recorded in
December96AQI
Lowest AQI recorded in
August40AQI
202364AQI
Highest AQI recorded in
January91AQI
Lowest AQI recorded in
August36AQI
202263AQI
Highest AQI recorded in
January88AQI
Lowest AQI recorded in
July39AQI
202162AQI
Highest AQI recorded in
January100AQI
Lowest AQI recorded in
September39AQI
202053AQI
Highest AQI recorded in
December77AQI
Lowest AQI recorded in
June37AQI
Most & Least Polluted Years Over the Last 6 Years
Yichun's annual 2025 AQI (74) shows an average percentage change of 19.2% (worsened AQI) compared to previous years: 2020 (53), 2021 (62), 2022 (63), 2023 (64), 2024 (68).