Air Quality
Excellent
No health implications.
17
PM2.5
35
PM10
97
O3
0.6
CO
3
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Apr
45
Excellent
Wed
1 May
83
Good
Thu
2 May
84
Good
Fri
3 May
85
Good
Sat
4 May
54
Good
Sun
5 May
63
Good
Air quality in the last 12 months (Changshan)
|
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
|
||
|
2024/01
|
145
|
128
|
58
|
50
|
51
|
52
|
154
|
156
|
122
|
58
|
83
|
57
|
55
|
58
|
120
|
76
|
71
|
79
|
38
|
16
|
39
|
44
|
36
|
39
|
49
|
60
|
63
|
59
|
82
|
56
|
60
|
|
2023/12
|
50
|
53
|
68
|
72
|
59
|
63
|
64
|
54
|
48
|
58
|
64
|
20
|
47
|
61
|
42
|
29
|
50
|
43
|
34
|
41
|
62
|
45
|
49
|
59
|
56
|
65
|
69
|
85
|
172
|
132
|
100
|
|
2023/11
|
49
|
45
|
44
|
58
|
49
|
24
|
38
|
49
|
55
|
21
|
17
|
18
|
45
|
49
|
59
|
42
|
78
|
71
|
56
|
55
|
51
|
48
|
52
|
83
|
53
|
59
|
65
|
58
|
62
|
73
|
|
|
2023/10
|
28
|
39
|
45
|
36
|
37
|
33
|
19
|
18
|
30
|
38
|
46
|
51
|
55
|
52
|
58
|
63
|
56
|
64
|
68
|
29
|
37
|
47
|
45
|
46
|
66
|
87
|
82
|
76
|
56
|
58
|
54
|
|
2023/09
|
41
|
42
|
40
|
32
|
30
|
37
|
40
|
42
|
46
|
51
|
51
|
52
|
26
|
16
|
18
|
21
|
29
|
34
|
38
|
39
|
26
|
26
|
24
|
32
|
40
|
45
|
55
|
49
|
44
|
32
|
|
|
2023/08
|
31
|
26
|
28
|
33
|
41
|
41
|
34
|
36
|
33
|
38
|
44
|
37
|
24
|
25
|
38
|
41
|
34
|
38
|
29
|
26
|
31
|
21
|
25
|
43
|
44
|
28
|
25
|
27
|
19
|
26
|
26
|
|
2023/07
|
40
|
37
|
26
|
25
|
26
|
32
|
29
|
29
|
32
|
33
|
36
|
35
|
34
|
37
|
40
|
31
|
28
|
27
|
25
|
19
|
21
|
21
|
20
|
28
|
31
|
24
|
18
|
12
|
18
|
22
|
24
|
|
2023/06
|
38
|
51
|
74
|
70
|
52
|
45
|
40
|
27
|
40
|
41
|
52
|
65
|
53
|
48
|
60
|
42
|
34
|
29
|
23
|
21
|
28
|
43
|
30
|
18
|
20
|
17
|
27
|
25
|
25
|
31
|
|
|
2023/05
|
59
|
43
|
35
|
41
|
28
|
28
|
23
|
35
|
48
|
52
|
60
|
61
|
52
|
66
|
62
|
63
|
34
|
34
|
54
|
81
|
64
|
36
|
66
|
57
|
46
|
45
|
36
|
40
|
42
|
44
|
56
|
|
2023/04
|
54
|
52
|
41
|
39
|
38
|
37
|
39
|
51
|
55
|
59
|
62
|
98
|
94
|
47
|
53
|
75
|
64
|
59
|
34
|
32
|
40
|
55
|
39
|
20
|
27
|
37
|
41
|
55
|
54
|
83
|
|
|
2023/03
|
67
|
79
|
86
|
71
|
63
|
57
|
55
|
66
|
66
|
58
|
55
|
66
|
73
|
55
|
58
|
86
|
57
|
38
|
37
|
38
|
53
|
43
|
26
|
23
|
30
|
43
|
83
|
83
|
60
|
29
|
41
|
|
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