Air Quality
Excellent
No health implications.
20
PM2.5
34
PM10
42
O3
0.7
CO
10
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Nov
52
Good
Sun
24 Nov
48
Excellent
Mon
25 Nov
42
Excellent
Tue
26 Nov
44
Excellent
Wed
27 Nov
53
Good
Thu
28 Nov
51
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