Air Quality
Excellent
No health implications.
9
PM2.5
18
PM10
47
O3
0.5
CO
9
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
7 Jul
57
Good
Tue
8 Jul
54
Good
Wed
9 Jul
52
Good
Thu
10 Jul
56
Good
Fri
11 Jul
57
Good
Sat
12 Jul
66
Good
Sun
13 Jul
23
Excellent
Air quality in the last 12 months (Changshan)
|
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
|
|
2025/04
|
39
|
43
|
62
|
68
|
57
|
59
|
59
|
57
|
59
|
45
|
50
|
101
|
156
|
97
|
61
|
50
|
58
|
58
|
50
|
46
|
57
|
16
|
39
|
31
|
26
|
39
|
32
|
35
|
54
|
56
|
|
|
2025/03
|
41
|
43
|
38
|
15
|
33
|
38
|
56
|
55
|
73
|
84
|
84
|
57
|
15
|
29
|
15
|
34
|
36
|
39
|
48
|
37
|
44
|
46
|
52
|
60
|
62
|
69
|
66
|
63
|
38
|
54
|
42
|
|
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
|
|
|
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