Air Quality
Excellent
No health implications.
31
PM2.5
47
PM10
90
O3
0.5
CO
9
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 May
92
Good
Fri
2 May
95
Good
Sat
3 May
93
Good
Sun
4 May
81
Good
Mon
5 May
56
Good
Tue
6 May
79
Good
Wed
7 May
28
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