Air Quality
Excellent
No health implications.
31
PM2.5
43
PM10
16
O3
0.9
CO
8
SO2
24
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Apr
40
Excellent
Tue
29 Apr
44
Excellent
Wed
30 Apr
37
Excellent
Thu
1 May
59
Good
Fri
2 May
76
Good
Sat
3 May
70
Good
Sun
4 May
22
Excellent
Air quality in the last 12 months (Haicheng)
|
2025/02
|
36
|
56
|
21
|
33
|
64
|
73
|
22
|
41
|
68
|
78
|
84
|
45
|
60
|
36
|
45
|
42
|
62
|
49
|
56
|
38
|
77
|
85
|
32
|
39
|
126
|
55
|
57
|
36
|
|||
|
2025/01
|
117
|
93
|
105
|
79
|
100
|
120
|
87
|
99
|
97
|
53
|
58
|
61
|
67
|
69
|
57
|
79
|
79
|
76
|
109
|
142
|
113
|
76
|
62
|
45
|
52
|
29
|
45
|
71
|
163
|
54
|
44
|
|
2024/12
|
52
|
45
|
43
|
47
|
44
|
81
|
64
|
37
|
49
|
47
|
44
|
46
|
55
|
64
|
54
|
59
|
70
|
76
|
59
|
66
|
100
|
86
|
90
|
102
|
104
|
101
|
90
|
80
|
93
|
88
|
108
|
|
2024/11
|
51
|
52
|
62
|
50
|
69
|
72
|
68
|
56
|
68
|
64
|
49
|
55
|
56
|
50
|
41
|
31
|
38
|
41
|
37
|
38
|
37
|
46
|
47
|
52
|
38
|
33
|
45
|
43
|
44
|
50
|
|
|
2024/10
|
37
|
29
|
46
|
55
|
50
|
53
|
57
|
62
|
48
|
48
|
52
|
44
|
39
|
35
|
31
|
30
|
21
|
16
|
24
|
32
|
40
|
43
|
28
|
35
|
40
|
49
|
38
|
29
|
39
|
49
|
61
|
|
2024/09
|
20
|
16
|
20
|
32
|
44
|
36
|
15
|
27
|
25
|
16
|
27
|
36
|
37
|
38
|
40
|
28
|
26
|
24
|
29
|
28
|
26
|
19
|
27
|
31
|
36
|
41
|
36
|
14
|
17
|
19
|
|
|
2024/08
|
27
|
24
|
22
|
15
|
16
|
14
|
17
|
18
|
22
|
22
|
19
|
21
|
19
|
19
|
17
|
25
|
22
|
14
|
15
|
17
|
20
|
20
|
21
|
14
|
19
|
15
|
15
|
18
|
15
|
31
|
24
|
|
2024/07
|
25
|
23
|
19
|
15
|
11
|
13
|
15
|
16
|
12
|
15
|
15
|
15
|
15
|
16
|
21
|
18
|
12
|
13
|
15
|
14
|
17
|
17
|
17
|
15
|
14
|
28
|
20
|
19
|
16
|
9
|
18
|
|
2024/06
|
18
|
15
|
18
|
18
|
15
|
14
|
15
|
12
|
17
|
18
|
19
|
20
|
26
|
27
|
29
|
30
|
27
|
22
|
24
|
22
|
22
|
15
|
15
|
11
|
13
|
15
|
15
|
11
|
17
|
24
|
|
|
2024/05
|
25
|
22
|
23
|
22
|
22
|
40
|
28
|
27
|
30
|
35
|
30
|
23
|
32
|
27
|
34
|
38
|
45
|
32
|
13
|
18
|
17
|
25
|
17
|
20
|
12
|
13
|
27
|
16
|
26
|
22
|
15
|
|
2024/04
|
49
|
42
|
42
|
45
|
54
|
39
|
38
|
24
|
32
|
39
|
44
|
37
|
35
|
38
|
47
|
31
|
35
|
28
|
37
|
39
|
30
|
27
|
30
|
39
|
29
|
40
|
53
|
57
|
42
|
50
|
|
|
2024/03
|
37
|
57
|
96
|
36
|
41
|
62
|
69
|
76
|
51
|
15
|
17
|
38
|
31
|
48
|
57
|
54
|
48
|
41
|
28
|
55
|
61
|
48
|
43
|
53
|
44
|
50
|
40
|
38
|
45
|
32
|
35
|
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
- Excellent
- Good
- Lightly
- Moderately
- Heavily
- Severely
Air quality source: CNEMC
*: primary pollution