Air Quality
Excellent
No health implications.
11
PM2.5
27
PM10
63
O3
0.7
CO
15
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
31 Dec
76
Good
Wed
1 Jan
83
Good
Thu
2 Jan
52
Good
Fri
3 Jan
50
Excellent
Sat
4 Jan
79
Good
Sun
5 Jan
77
Good
Mon
6 Jan
43
Excellent
Air quality in the last 12 months (Changhai)
|
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
|
|
2024/02
|
36
|
62
|
76
|
64
|
80
|
54
|
51
|
62
|
124
|
250
|
81
|
113
|
84
|
66
|
44
|
47
|
33
|
26
|
40
|
45
|
51
|
39
|
52
|
94
|
93
|
64
|
74
|
99
|
74
|
||
|
2024/01
|
71
|
92
|
118
|
79
|
54
|
39
|
31
|
36
|
53
|
46
|
82
|
50
|
50
|
52
|
51
|
61
|
51
|
59
|
63
|
65
|
44
|
24
|
28
|
45
|
48
|
71
|
50
|
64
|
100
|
71
|
72
|
|
2023/12
|
38
|
39
|
42
|
92
|
110
|
81
|
99
|
82
|
53
|
39
|
50
|
58
|
94
|
79
|
57
|
35
|
33
|
33
|
54
|
25
|
39
|
45
|
50
|
54
|
67
|
62
|
45
|
51
|
74
|
63
|
84
|
|
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