Environment Protection Office, Taihecun, 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
Environment Protection Office, Taihecun, Heilongjiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (11th October ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 73 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Oct - 12th Oct 2025
Environment Protection Office, Taihecun, Heilongjiang, China
7 AM11th Oct 2025
7 PM
6 AM12th Oct 2025
55AQI
39AQI
62AQI
49AQI
In the last 24 hours,
Environment Protection Office's AQI reached its highest point of 62 at 6 AM during the Night, while the lowest point, 39, was recorded at 3 PM during the Day between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Environment Protection Office, Taihecun, Heilongjiang, China
19°C12/28°C
20°C15/27°C
18°C15/27°C
17°C13/21°C
15°C11/19°C
13°C7/19°C
12°C5/20°C
15°C8/23°C
15°C10/23°C
13°C6/21°C
15°C8/23°C
16°C10/24°C
14°C12/18°C
16°C10/23°C
15°C10/21°C
18°C11/27°C
17°C9/25°C
13°C5/21°C
17°C10/26°C
17°C12/25°C
15°C7/24°C
20°C13/28°C
18°C11/26°C
10°C4/15°C
7°C2/13°C
10°C2/17°C
7°C2/11°C
5°C0/12°C
7°C2/14°C
8°C2/14°C
--°C/°C
53AQI
42AQI
58AQI
50AQI
2025 Days Vs Air Quality
Environment Protection Office, Taihecun, Heilongjiang, China
33%
93
49%
140
15%
42
3%
9
Total number of days with different AQI categories in last 285 days in 2025 (80 days remaining)
Under WHO’s Safe Air Quality Limits: 33%
Health Risk Level:
High
In 2025, 33% of 285 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
Environment Protection Office, Taihecun, Heilongjiang, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
141AQI
138AQI
137AQI
161AQI
146AQI
125AQI
140AQI
102AQI
116AQI
112AQI
136AQI
130AQI
129AQI
131AQI
115AQI
103AQI
115AQI
136AQI
152AQI
123AQI
160AQI
157AQI
164AQI
171AQI
175AQI
178AQI
137AQI
121AQI
122AQI
114AQI
122AQI
122AQI
134AQI
158AQI
121AQI
102AQI
94AQI
96AQI
89AQI
91AQI
104AQI
110AQI
118AQI
100AQI
79AQI
94AQI
68AQI
68AQI
68AQI
69AQI
74AQI
72AQI
65AQI
73AQI
68AQI
74AQI
70AQI
99AQI
95AQI
70AQI
69AQI
64AQI
83AQI
82AQI
86AQI
72AQI
85AQI
80AQI
109AQI
80AQI
93AQI
60AQI
58AQI
55AQI
55AQI
62AQI
54AQI
77AQI
113AQI
82AQI
61AQI
62AQI
67AQI
68AQI
77AQI
68AQI
57AQI
58AQI
54AQI
79AQI
98AQI
106AQI
115AQI
96AQI
98AQI
94AQI
82AQI
82AQI
105AQI
135AQI
150AQI
122AQI
108AQI
77AQI
71AQI
61AQI
119AQI
95AQI
83AQI
77AQI
110AQI
62AQI
80AQI
67AQI
67AQI
59AQI
71AQI
70AQI
69AQI
85AQI
86AQI
71AQI
63AQI
50AQI
47AQI
47AQI
57AQI
59AQI
57AQI
59AQI
65AQI
111AQI
77AQI
85AQI
72AQI
65AQI
55AQI
55AQI
52AQI
58AQI
58AQI
49AQI
49AQI
45AQI
41AQI
43AQI
49AQI
56AQI
63AQI
64AQI
72AQI
58AQI
59AQI
54AQI
55AQI
50AQI
40AQI
44AQI
57AQI
54AQI
45AQI
43AQI
50AQI
60AQI
57AQI
49AQI
49AQI
47AQI
55AQI
57AQI
54AQI
43AQI
37AQI
49AQI
55AQI
59AQI
59AQI
61AQI
60AQI
60AQI
61AQI
58AQI
51AQI
60AQI
57AQI
54AQI
53AQI
49AQI
51AQI
53AQI
50AQI
57AQI
57AQI
50AQI
46AQI
47AQI
43AQI
50AQI
48AQI
48AQI
48AQI
44AQI
52AQI
53AQI
53AQI
48AQI
51AQI
50AQI
45AQI
49AQI
45AQI
46AQI
48AQI
47AQI
39AQI
41AQI
42AQI
39AQI
33AQI
36AQI
39AQI
38AQI
33AQI
38AQI
39AQI
36AQI
47AQI
45AQI
40AQI
40AQI
46AQI
44AQI
40AQI
38AQI
44AQI
40AQI
42AQI
37AQI
39AQI
38AQI
41AQI
48AQI
53AQI
48AQI
48AQI
43AQI
59AQI
58AQI
44AQI
43AQI
38AQI
40AQI
36AQI
41AQI
48AQI
50AQI
51AQI
41AQI
44AQI
37AQI
39AQI
41AQI
44AQI
44AQI
47AQI
51AQI
51AQI
49AQI
36AQI
40AQI
41AQI
24AQI
67AQI
60AQI
54AQI
76AQI
84AQI
53AQI
68AQI
64AQI
48AQI
53AQI
70AQI
73AQI
136AQI
92AQI
72AQI
90AQI
61AQI
53AQI
51AQI
41AQI
45AQI
64AQI
No. of days
202571AQI
Highest AQI recorded in
January136AQI
Lowest AQI recorded in
August41AQI
202461AQI
Highest AQI recorded in
January114AQI
Lowest AQI recorded in
September39AQI
202387AQI
Highest AQI recorded in
December88AQI
Lowest AQI recorded in
November67AQI
202069AQI
Highest AQI recorded in
April103AQI
Lowest AQI recorded in
June49AQI
Most & Least Polluted Years Over the Last 4 Years
Environment Protection Office's annual 2025 AQI (71) shows an average percentage change of -0.2% (improved AQI) compared to previous years: 2020 (69), 2023 (87), 2024 (61).