Air Quality
Excellent
No health implications.
9
PM2.5
24
PM10
68
O3
0.6
CO
11
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
6 Nov
50
Excellent
Thu
7 Nov
57
Good
Fri
8 Nov
56
Good
Sat
9 Nov
58
Good
Sun
10 Nov
72
Good
Mon
11 Nov
78
Good
Tue
12 Nov
79
Good
Air quality in the last 12 months (Changhai)
|
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
|
|
2023/11
|
123
|
83
|
45
|
51
|
51
|
30
|
29
|
31
|
38
|
22
|
26
|
31
|
37
|
52
|
85
|
53
|
27
|
39
|
40
|
23
|
33
|
70
|
42
|
25
|
30
|
50
|
74
|
26
|
32
|
30
|
|
|
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