Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
37
*
PM2.5
43
PM10
61
O3
0.8
CO
7
SO2
20
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
15 May
83
Good
Fri
16 May
77
Good
Sat
17 May
58
Good
Sun
18 May
76
Good
Mon
19 May
68
Good
Tue
20 May
74
Good
Wed
21 May
41
Excellent
Air quality in the last 12 months (Changhai)
|
2025/02
|
81
|
102
|
36
|
32
|
28
|
39
|
51
|
51
|
45
|
54
|
56
|
38
|
65
|
89
|
93
|
60
|
30
|
31
|
42
|
44
|
43
|
36
|
31
|
43
|
63
|
72
|
101
|
87
|
|||
|
2025/01
|
47
|
36
|
34
|
64
|
149
|
51
|
36
|
46
|
35
|
47
|
60
|
77
|
78
|
64
|
37
|
57
|
47
|
69
|
103
|
68
|
69
|
53
|
49
|
76
|
111
|
152
|
65
|
53
|
130
|
49
|
64
|
|
2024/12
|
53
|
29
|
31
|
35
|
33
|
30
|
32
|
42
|
49
|
55
|
37
|
46
|
54
|
39
|
36
|
52
|
38
|
39
|
40
|
76
|
41
|
43
|
46
|
49
|
89
|
43
|
41
|
44
|
49
|
83
|
36
|
|
2024/11
|
86
|
60
|
57
|
37
|
22
|
31
|
41
|
43
|
45
|
57
|
37
|
46
|
29
|
38
|
46
|
36
|
20
|
24
|
33
|
79
|
63
|
35
|
50
|
39
|
33
|
18
|
19
|
33
|
43
|
45
|
|
|
2024/10
|
13
|
21
|
17
|
21
|
30
|
47
|
37
|
39
|
23
|
36
|
29
|
44
|
36
|
23
|
26
|
24
|
33
|
54
|
48
|
38
|
24
|
24
|
24
|
64
|
64
|
76
|
48
|
43
|
45
|
58
|
62
|
|
2024/09
|
28
|
22
|
26
|
25
|
21
|
20
|
34
|
26
|
28
|
29
|
31
|
36
|
56
|
34
|
34
|
39
|
40
|
47
|
45
|
27
|
20
|
27
|
27
|
19
|
42
|
44
|
42
|
40
|
28
|
26
|
|
|
2024/08
|
30
|
40
|
37
|
24
|
16
|
22
|
19
|
28
|
38
|
21
|
36
|
55
|
45
|
46
|
49
|
49
|
55
|
36
|
17
|
20
|
28
|
28
|
30
|
46
|
35
|
28
|
30
|
33
|
32
|
40
|
24
|
|
2024/07
|
48
|
28
|
32
|
42
|
39
|
18
|
38
|
38
|
55
|
42
|
52
|
63
|
53
|
49
|
38
|
14
|
23
|
38
|
46
|
18
|
24
|
24
|
19
|
20
|
15
|
21
|
13
|
22
|
22
|
28
|
28
|
|
2024/06
|
23
|
36
|
39
|
30
|
21
|
25
|
24
|
24
|
40
|
42
|
45
|
28
|
22
|
20
|
24
|
26
|
50
|
44
|
22
|
21
|
21
|
18
|
46
|
25
|
23
|
23
|
23
|
21
|
19
|
29
|
|
|
2024/05
|
47
|
53
|
52
|
33
|
20
|
45
|
52
|
50
|
78
|
45
|
93
|
33
|
43
|
71
|
42
|
36
|
42
|
30
|
30
|
44
|
39
|
18
|
28
|
42
|
34
|
26
|
19
|
27
|
35
|
26
|
26
|
|
2024/04
|
64
|
49
|
56
|
59
|
69
|
78
|
95
|
93
|
106
|
87
|
51
|
29
|
16
|
20
|
53
|
82
|
54
|
73
|
78
|
78
|
65
|
40
|
27
|
18
|
32
|
46
|
41
|
52
|
55
|
48
|
|
|
2024/03
|
42
|
66
|
57
|
69
|
68
|
46
|
60
|
52
|
49
|
51
|
56
|
64
|
84
|
110
|
112
|
85
|
89
|
57
|
46
|
26
|
43
|
46
|
45
|
61
|
54
|
60
|
67
|
205
|
88
|
73
|
61
|
|
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