Air Quality
Excellent
No health implications.
2
PM2.5
8
PM10
34
O3
0.3
CO
6
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 May
49
Excellent
Sat
23 May
53
Good
Sun
24 May
48
Excellent
Mon
25 May
51
Good
Tue
26 May
42
Excellent
Wed
27 May
41
Excellent
Thu
28 May
39
Excellent
Air quality in the last 12 months (Changshan)
|
2026/04
|
31
|
39
|
24
|
33
|
62
|
55
|
53
|
32
|
43
|
31
|
37
|
31
|
47
|
36
|
41
|
45
|
27
|
53
|
49
|
57
|
47
|
15
|
20
|
26
|
33
|
44
|
51
|
54
|
25
|
27
|
|
|
2026/03
|
20
|
16
|
27
|
72
|
50
|
51
|
69
|
58
|
61
|
50
|
47
|
47
|
57
|
55
|
56
|
72
|
57
|
45
|
20
|
47
|
51
|
41
|
23
|
22
|
35
|
44
|
34
|
39
|
34
|
33
|
22
|
|
2026/02
|
37
|
46
|
67
|
67
|
82
|
39
|
21
|
44
|
41
|
48
|
51
|
61
|
61
|
45
|
37
|
21
|
55
|
52
|
52
|
41
|
41
|
47
|
123
|
55
|
24
|
24
|
16
|
18
|
|||
|
2026/01
|
23
|
27
|
66
|
81
|
51
|
52
|
53
|
50
|
50
|
52
|
59
|
61
|
57
|
55
|
55
|
67
|
98
|
106
|
67
|
13
|
38
|
58
|
76
|
79
|
87
|
94
|
25
|
76
|
79
|
38
|
14
|
|
2025/12
|
66
|
120
|
57
|
60
|
62
|
67
|
76
|
85
|
73
|
63
|
66
|
78
|
40
|
40
|
50
|
57
|
70
|
136
|
110
|
75
|
63
|
45
|
55
|
43
|
38
|
55
|
53
|
55
|
57
|
83
|
59
|
|
2025/11
|
45
|
54
|
64
|
38
|
37
|
43
|
38
|
47
|
13
|
45
|
40
|
28
|
48
|
51
|
76
|
68
|
54
|
30
|
37
|
41
|
48
|
58
|
60
|
51
|
70
|
86
|
84
|
85
|
65
|
57
|
|
|
2025/10
|
41
|
37
|
38
|
36
|
34
|
34
|
43
|
50
|
42
|
42
|
45
|
50
|
49
|
34
|
40
|
34
|
37
|
31
|
19
|
27
|
29
|
30
|
35
|
38
|
47
|
53
|
39
|
56
|
45
|
39
|
32
|
|
2025/09
|
28
|
27
|
30
|
32
|
33
|
27
|
25
|
24
|
23
|
19
|
20
|
22
|
25
|
21
|
28
|
31
|
28
|
30
|
23
|
25
|
26
|
32
|
31
|
20
|
26
|
26
|
37
|
35
|
41
|
40
|
|
|
2025/08
|
33
|
37
|
29
|
26
|
19
|
14
|
15
|
20
|
24
|
34
|
34
|
28
|
15
|
12
|
13
|
16
|
17
|
20
|
22
|
23
|
21
|
20
|
20
|
28
|
25
|
26
|
23
|
17
|
19
|
25
|
30
|
|
2025/07
|
13
|
19
|
26
|
33
|
26
|
18
|
18
|
19
|
19
|
31
|
30
|
17
|
17
|
23
|
28
|
32
|
30
|
27
|
20
|
15
|
13
|
16
|
20
|
20
|
27
|
15
|
16
|
14
|
22
|
22
|
21
|
|
2025/06
|
36
|
21
|
20
|
39
|
34
|
30
|
35
|
38
|
22
|
22
|
20
|
25
|
20
|
21
|
18
|
24
|
30
|
20
|
21
|
20
|
18
|
21
|
15
|
14
|
27
|
21
|
23
|
19
|
23
|
26
|
|
|
2025/05
|
45
|
47
|
53
|
53
|
33
|
48
|
104
|
52
|
21
|
44
|
41
|
47
|
45
|
45
|
63
|
42
|
26
|
40
|
41
|
20
|
17
|
32
|
12
|
41
|
62
|
64
|
64
|
45
|
22
|
33
|
43
|
|
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