Department Of Transportation, Heihe, Heilongjiang, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Department Of Transportation, Heihe, Heilongjiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 4 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: 2nd Jul - 3rd Jul 2025
Department Of Transportation, Heihe, Heilongjiang, China
4 AM2nd Jul 2025
8 PM
3 AM3rd Jul 2025
60AQI
41AQI
61AQI
52AQI
In the last 24 hours,
Department Of Transportation's AQI reached its highest point of 61 at 3 AM during the Night, while the lowest point, 41, was recorded at 4 PM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Department Of Transportation, Heihe, Heilongjiang, China
13°C12/14°C
16°C12/20°C
13°C10/18°C
10°C8/12°C
14°C8/19°C
13°C10/19°C
16°C11/21°C
18°C12/24°C
21°C14/27°C
19°C14/27°C
17°C14/22°C
19°C13/23°C
20°C14/26°C
17°C12/23°C
16°C10/21°C
17°C11/22°C
18°C14/25°C
17°C14/21°C
16°C14/18°C
21°C13/29°C
23°C17/29°C
25°C18/30°C
23°C17/29°C
26°C20/32°C
26°C20/32°C
27°C21/34°C
24°C20/30°C
21°C15/26°C
20°C13/26°C
21°C18/26°C
0°C0/0°C
54AQI
54AQI
57AQI
57AQI
2025 Days Vs Air Quality
Department Of Transportation, Heihe, Heilongjiang, China
5%
9
63%
115
23%
43
8%
14
1%
2
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 5%
Health Risk Level:
Extreme
In 2025, 5% of 184 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.
Annual Air Quality Insights
Department Of Transportation, Heihe, Heilongjiang, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
136AQI
135AQI
124AQI
166AQI
139AQI
162AQI
146AQI
112AQI
121AQI
141AQI
165AQI
178AQI
173AQI
189AQI
133AQI
118AQI
152AQI
137AQI
168AQI
173AQI
161AQI
151AQI
210AQI
196AQI
219AQI
190AQI
132AQI
126AQI
113AQI
101AQI
119AQI
131AQI
161AQI
145AQI
120AQI
117AQI
103AQI
95AQI
91AQI
108AQI
117AQI
150AQI
130AQI
116AQI
112AQI
129AQI
104AQI
81AQI
84AQI
80AQI
78AQI
81AQI
73AQI
82AQI
87AQI
89AQI
80AQI
117AQI
91AQI
82AQI
69AQI
81AQI
86AQI
95AQI
92AQI
96AQI
93AQI
117AQI
122AQI
111AQI
89AQI
79AQI
62AQI
65AQI
65AQI
66AQI
66AQI
92AQI
100AQI
85AQI
74AQI
89AQI
63AQI
72AQI
79AQI
70AQI
69AQI
62AQI
65AQI
85AQI
106AQI
108AQI
109AQI
114AQI
90AQI
98AQI
93AQI
87AQI
113AQI
144AQI
123AQI
116AQI
86AQI
75AQI
63AQI
71AQI
110AQI
79AQI
81AQI
85AQI
89AQI
63AQI
72AQI
72AQI
65AQI
58AQI
88AQI
81AQI
101AQI
88AQI
85AQI
76AQI
59AQI
50AQI
53AQI
53AQI
63AQI
67AQI
70AQI
59AQI
90AQI
82AQI
84AQI
92AQI
93AQI
81AQI
70AQI
65AQI
60AQI
65AQI
50AQI
55AQI
59AQI
53AQI
53AQI
65AQI
62AQI
88AQI
74AQI
84AQI
72AQI
71AQI
64AQI
60AQI
50AQI
52AQI
47AQI
49AQI
51AQI
51AQI
45AQI
47AQI
59AQI
60AQI
56AQI
62AQI
62AQI
57AQI
63AQI
57AQI
53AQI
43AQI
40AQI
53AQI
58AQI
59AQI
60AQI
66AQI
61AQI
61AQI
62AQI
54AQI
56AQI
151AQI
105AQI
82AQI
91AQI
69AQI
56AQI
55AQI
No. of days
202592AQI
Highest AQI recorded in
January151AQI
Lowest AQI recorded in
July55AQI
202470AQI
Highest AQI recorded in
December102AQI
Lowest AQI recorded in
August49AQI
202355AQI
Highest AQI recorded in
January79AQI
Lowest AQI recorded in
August33AQI
202250AQI
Highest AQI recorded in
January61AQI
Lowest AQI recorded in
September35AQI
202154AQI
Highest AQI recorded in
January75AQI
Lowest AQI recorded in
August35AQI
202047AQI
Highest AQI recorded in
December62AQI
Lowest AQI recorded in
June35AQI
Most & Least Polluted Years Over the Last 6 Years
Department Of Transportation's annual 2025 AQI (92) shows an average percentage change of 69.5% (worsened AQI) compared to previous years: 2020 (47), 2021 (54), 2022 (50), 2023 (55), 2024 (70).