Seismological Bureau, Heihe, Heilongjiang, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Seismological Bureau, Heihe, Heilongjiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 3rd highest AQI at 33 of Good air quality, showing improvement over 2025 and 2024 on the same day.
Day & Night AQI Trend: 14th Aug - 15th Aug 2026
Seismological Bureau, Heihe, Heilongjiang, China
3 AM14th Aug 2026
7 PM
2 AM15th Aug 2026
52AQI
32AQI
52AQI
21AQI
In the last 24 hours,
Seismological Bureau's AQI reached its highest point of 52 at 12 PM during the Day, while the lowest point, 21, was recorded at 2 AM during the Night between 14th Aug and 15th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Seismological Bureau, Heihe, Heilongjiang, China
16°C12/22°C
19°C14/23°C
17°C16/21°C
21°C14/27°C
22°C16/28°C
22°C17/27°C
24°C18/30°C
22°C18/29°C
20°C19/22°C
21°C18/24°C
22°C17/27°C
24°C20/30°C
22°C19/25°C
22°C18/27°C
19°C18/20°C
21°C17/27°C
22°C18/26°C
22°C19/25°C
25°C20/32°C
24°C21/30°C
17°C13/21°C
15°C11/20°C
18°C10/25°C
17°C13/23°C
21°C17/26°C
21°C16/27°C
21°C19/25°C
20°C15/27°C
17°C10/23°C
17°C11/24°C
40AQI
37AQI
44AQI
38AQI
2026 Days Vs Air Quality
Seismological Bureau, Heihe, Heilongjiang, China
49%
111
37%
85
12%
28
1%
3
Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)
Under WHO’s Safe Air Quality Limits: 49%
Health Risk Level:
Significant
In 2026, 49% of 227 days were within WHO’s safe air quality limits, and 51% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Seismological Bureau, Heihe, Heilongjiang, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
69AQI (US)
115AQI (US)
142AQI (US)
77AQI (US)
63AQI (US)
112AQI (US)
77AQI (US)
80AQI (US)
113AQI (US)
90AQI (US)
94AQI (US)
125AQI (US)
125AQI (US)
96AQI (US)
119AQI (US)
120AQI (US)
90AQI (US)
137AQI (US)
113AQI (US)
78AQI (US)
82AQI (US)
64AQI (US)
81AQI (US)
79AQI (US)
66AQI (US)
85AQI (US)
103AQI (US)
84AQI (US)
66AQI (US)
62AQI (US)
99AQI (US)
98AQI (US)
90AQI (US)
50AQI (US)
108AQI (US)
100AQI (US)
43AQI (US)
69AQI (US)
78AQI (US)
106AQI (US)
135AQI (US)
110AQI (US)
103AQI (US)
118AQI (US)
109AQI (US)
33AQI (US)
81AQI (US)
81AQI (US)
45AQI (US)
91AQI (US)
94AQI (US)
116AQI (US)
74AQI (US)
32AQI (US)
33AQI (US)
56AQI (US)
44AQI (US)
44AQI (US)
36AQI (US)
42AQI (US)
53AQI (US)
43AQI (US)
80AQI (US)
87AQI (US)
63AQI (US)
58AQI (US)
79AQI (US)
57AQI (US)
80AQI (US)
49AQI (US)
58AQI (US)
60AQI (US)
64AQI (US)
57AQI (US)
48AQI (US)
60AQI (US)
63AQI (US)
100AQI (US)
74AQI (US)
136AQI (US)
142AQI (US)
115AQI (US)
137AQI (US)
173AQI (US)
153AQI (US)
98AQI (US)
109AQI (US)
125AQI (US)
52AQI (US)
146AQI (US)
96AQI (US)
158AQI (US)
107AQI (US)
81AQI (US)
88AQI (US)
67AQI (US)
39AQI (US)
51AQI (US)
42AQI (US)
51AQI (US)
57AQI (US)
53AQI (US)
27AQI (US)
61AQI (US)
81AQI (US)
82AQI (US)
107AQI (US)
41AQI (US)
36AQI (US)
46AQI (US)
30AQI (US)
21AQI (US)
47AQI (US)
65AQI (US)
50AQI (US)
37AQI (US)
27AQI (US)
31AQI (US)
42AQI (US)
63AQI (US)
33AQI (US)
45AQI (US)
51AQI (US)
59AQI (US)
42AQI (US)
38AQI (US)
45AQI (US)
41AQI (US)
41AQI (US)
59AQI (US)
83AQI (US)
77AQI (US)
76AQI (US)
78AQI (US)
44AQI (US)
79AQI (US)
68AQI (US)
63AQI (US)
63AQI (US)
71AQI (US)
77AQI (US)
90AQI (US)
84AQI (US)
76AQI (US)
71AQI (US)
49AQI (US)
29AQI (US)
29AQI (US)
31AQI (US)
29AQI (US)
42AQI (US)
38AQI (US)
33AQI (US)
36AQI (US)
19AQI (US)
17AQI (US)
25AQI (US)
21AQI (US)
18AQI (US)
24AQI (US)
31AQI (US)
38AQI (US)
36AQI (US)
18AQI (US)
20AQI (US)
30AQI (US)
44AQI (US)
48AQI (US)
41AQI (US)
52AQI (US)
50AQI (US)
28AQI (US)
30AQI (US)
39AQI (US)
49AQI (US)
29AQI (US)
33AQI (US)
29AQI (US)
27AQI (US)
28AQI (US)
48AQI (US)
55AQI (US)
45AQI (US)
49AQI (US)
26AQI (US)
34AQI (US)
34AQI (US)
17AQI (US)
20AQI (US)
19AQI (US)
39AQI (US)
34AQI (US)
18AQI (US)
34AQI (US)
28AQI (US)
32AQI (US)
22AQI (US)
31AQI (US)
39AQI (US)
38AQI (US)
38AQI (US)
40AQI (US)
39AQI (US)
62AQI (US)
33AQI (US)
34AQI (US)
45AQI (US)
32AQI (US)
71AQI (US)
49AQI (US)
35AQI (US)
63AQI (US)
41AQI (US)
26AQI (US)
39AQI (US)
31AQI (US)
36AQI (US)
41AQI (US)
34AQI (US)
34AQI (US)
34AQI (US)
37AQI (US)
52AQI (US)
37AQI (US)
27AQI (US)
42AQI (US)
33AQI (US)
94AQI (US)
78AQI (US)
86AQI (US)
59AQI (US)
57AQI (US)
33AQI (US)
37AQI (US)
36AQI (US)
No. of days
202662AQI (US)
Highest AQI (US) recorded in
January94AQI (US)
Lowest AQI (US) recorded in
June33AQI (US)
202582AQI (US)
Highest AQI (US) recorded in
January148AQI (US)
Lowest AQI (US) recorded in
August43AQI (US)
202466AQI (US)
Highest AQI (US) recorded in
February119AQI (US)
Lowest AQI (US) recorded in
August49AQI (US)
202371AQI (US)
Highest AQI (US) recorded in
December72AQI (US)
Lowest AQI (US) recorded in
November56AQI (US)
202249AQI (US)
Highest AQI (US) recorded in
July54AQI (US)
Lowest AQI (US) recorded in
February43AQI (US)
202152AQI (US)
Highest AQI (US) recorded in
November70AQI (US)
Lowest AQI (US) recorded in
August36AQI (US)
202042AQI (US)
Highest AQI (US) recorded in
July58AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Seismological Bureau's annual 2026 AQI (US) (62) shows an average percentage change of 8.3% (worsened AQI (US)) compared to previous years: 2020 (42), 2021 (52), 2022 (49), 2023 (71), 2024 (66), 2025 (82).