Air Quality
Excellent
No health implications.
19
PM2.5
23
PM10
66
O3
0.5
CO
5
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Feb
56
Good
Mon
24 Feb
68
Good
Tue
25 Feb
62
Good
Wed
26 Feb
70
Good
Thu
27 Feb
68
Good
Fri
28 Feb
60
Good
Sat
1 Mar
46
Excellent
Air quality in the last 12 months (Changshan)
|
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
|
|
2024/02
|
35
|
18
|
15
|
18
|
19
|
25
|
32
|
64
|
105
|
172
|
76
|
55
|
49
|
45
|
35
|
21
|
28
|
40
|
42
|
42
|
23
|
10
|
18
|
21
|
38
|
68
|
77
|
57
|
25
|
||
|
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