Air Quality
Excellent
No health implications.
28
PM2.5
40
PM10
27
O3
0.6
CO
10
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Apr
78
Good
Mon
21 Apr
75
Good
Tue
22 Apr
59
Good
Wed
23 Apr
78
Good
Thu
24 Apr
74
Good
Fri
25 Apr
69
Good
Sat
26 Apr
37
Excellent
Air quality in the last 12 months (Changshan)
|
2025/02
|
17
|
15
|
47
|
48
|
42
|
50
|
61
|
45
|
36
|
47
|
55
|
55
|
98
|
106
|
78
|
45
|
59
|
29
|
42
|
18
|
17
|
24
|
30
|
56
|
85
|
63
|
53
|
40
|
|||
|
2025/01
|
88
|
81
|
85
|
82
|
84
|
81
|
83
|
96
|
79
|
37
|
49
|
57
|
60
|
63
|
85
|
55
|
55
|
63
|
55
|
57
|
81
|
74
|
67
|
62
|
48
|
26
|
38
|
59
|
159
|
61
|
51
|
|
2024/12
|
49
|
54
|
74
|
104
|
62
|
41
|
89
|
81
|
53
|
61
|
25
|
62
|
71
|
78
|
62
|
55
|
67
|
69
|
50
|
52
|
69
|
70
|
65
|
74
|
90
|
111
|
146
|
101
|
70
|
74
|
75
|
|
2024/11
|
14
|
29
|
44
|
64
|
71
|
52
|
35
|
41
|
40
|
39
|
43
|
51
|
51
|
52
|
28
|
25
|
25
|
27
|
37
|
35
|
46
|
52
|
84
|
47
|
36
|
26
|
45
|
48
|
52
|
49
|
|
|
2024/10
|
24
|
27
|
29
|
31
|
34
|
31
|
17
|
21
|
43
|
44
|
60
|
60
|
47
|
42
|
54
|
15
|
29
|
34
|
25
|
24
|
45
|
46
|
33
|
48
|
38
|
37
|
20
|
24
|
60
|
49
|
38
|
|
2024/09
|
31
|
39
|
48
|
38
|
30
|
32
|
39
|
35
|
27
|
38
|
28
|
29
|
32
|
35
|
33
|
27
|
16
|
22
|
25
|
39
|
16
|
23
|
23
|
26
|
34
|
48
|
26
|
33
|
43
|
40
|
|
|
2024/08
|
19
|
27
|
32
|
31
|
26
|
28
|
31
|
31
|
34
|
35
|
37
|
26
|
20
|
22
|
28
|
38
|
39
|
34
|
22
|
19
|
19
|
33
|
35
|
38
|
40
|
49
|
46
|
23
|
37
|
32
|
28
|
|
2024/07
|
21
|
22
|
20
|
23
|
24
|
25
|
25
|
24
|
27
|
31
|
27
|
28
|
28
|
27
|
33
|
32
|
29
|
23
|
24
|
27
|
30
|
27
|
27
|
21
|
19
|
12
|
11
|
17
|
16
|
18
|
18
|
|
2024/06
|
11
|
18
|
26
|
48
|
32
|
15
|
23
|
26
|
36
|
24
|
16
|
17
|
27
|
20
|
20
|
22
|
16
|
22
|
29
|
26
|
28
|
25
|
29
|
18
|
11
|
21
|
12
|
21
|
19
|
23
|
|
|
2024/05
|
15
|
39
|
48
|
32
|
16
|
22
|
35
|
52
|
54
|
58
|
42
|
38
|
58
|
46
|
50
|
50
|
48
|
48
|
50
|
44
|
27
|
32
|
36
|
27
|
32
|
22
|
23
|
20
|
35
|
45
|
37
|
|
2024/04
|
31
|
23
|
23
|
21
|
41
|
37
|
23
|
21
|
33
|
50
|
53
|
39
|
45
|
27
|
44
|
47
|
22
|
22
|
35
|
25
|
25
|
18
|
36
|
53
|
51
|
41
|
38
|
44
|
25
|
15
|
|
|
2024/03
|
38
|
50
|
38
|
43
|
39
|
19
|
55
|
52
|
62
|
67
|
63
|
61
|
86
|
68
|
73
|
63
|
55
|
45
|
43
|
57
|
47
|
49
|
49
|
38
|
33
|
19
|
43
|
32
|
41
|
44
|
31
|
|
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