Air Quality
Excellent
No health implications.
29
PM2.5
46
PM10
67
O3
0.5
CO
8
SO2
22
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Apr
44
Excellent
Mon
20 Apr
44
Excellent
Tue
21 Apr
44
Excellent
Wed
22 Apr
43
Excellent
Thu
23 Apr
45
Excellent
Fri
24 Apr
47
Excellent
Sat
25 Apr
41
Excellent
Air quality in the last 12 months (Ludian)
|
2026/03
|
45
|
28
|
26
|
28
|
37
|
39
|
35
|
29
|
22
|
30
|
44
|
56
|
47
|
37
|
22
|
31
|
37
|
29
|
38
|
31
|
41
|
33
|
35
|
31
|
37
|
35
|
31
|
34
|
32
|
35
|
27
|
|
2026/02
|
38
|
38
|
37
|
45
|
43
|
51
|
53
|
36
|
39
|
34
|
36
|
53
|
46
|
47
|
39
|
76
|
80
|
42
|
32
|
48
|
50
|
56
|
49
|
45
|
45
|
55
|
42
|
45
|
|||
|
2026/01
|
34
|
26
|
37
|
27
|
32
|
29
|
35
|
44
|
73
|
86
|
72
|
68
|
56
|
51
|
62
|
63
|
75
|
46
|
76
|
40
|
30
|
34
|
58
|
54
|
45
|
44
|
78
|
68
|
53
|
40
|
36
|
|
2025/12
|
77
|
63
|
39
|
31
|
37
|
52
|
44
|
56
|
49
|
44
|
64
|
40
|
36
|
54
|
58
|
53
|
40
|
57
|
47
|
44
|
48
|
49
|
39
|
47
|
40
|
64
|
58
|
64
|
56
|
43
|
40
|
|
2025/11
|
21
|
22
|
20
|
30
|
28
|
22
|
28
|
25
|
18
|
25
|
25
|
25
|
26
|
26
|
32
|
35
|
28
|
22
|
26
|
32
|
39
|
42
|
45
|
49
|
45
|
54
|
50
|
51
|
59
|
73
|
|
|
2025/10
|
19
|
20
|
23
|
24
|
26
|
24
|
17
|
19
|
20
|
24
|
22
|
24
|
23
|
25
|
26
|
23
|
18
|
20
|
16
|
17
|
17
|
22
|
22
|
26
|
24
|
22
|
23
|
30
|
25
|
31
|
24
|
|
2025/09
|
31
|
30
|
32
|
38
|
34
|
29
|
41
|
28
|
32
|
36
|
30
|
28
|
30
|
40
|
37
|
27
|
32
|
27
|
29
|
28
|
30
|
24
|
21
|
27
|
41
|
24
|
20
|
19
|
22
|
17
|
|
|
2025/08
|
35
|
34
|
38
|
40
|
38
|
37
|
36
|
36
|
33
|
34
|
26
|
33
|
34
|
39
|
38
|
31
|
28
|
30
|
29
|
38
|
29
|
27
|
25
|
26
|
28
|
25
|
25
|
30
|
30
|
27
|
29
|
|
2025/07
|
26
|
19
|
26
|
25
|
25
|
23
|
28
|
24
|
24
|
24
|
26
|
25
|
31
|
32
|
30
|
31
|
33
|
37
|
29
|
27
|
24
|
19
|
20
|
21
|
24
|
28
|
29
|
35
|
40
|
41
|
33
|
|
2025/06
|
25
|
24
|
30
|
32
|
34
|
42
|
42
|
37
|
45
|
40
|
34
|
42
|
44
|
44
|
26
|
29
|
26
|
23
|
23
|
27
|
27
|
33
|
34
|
25
|
20
|
21
|
27
|
21
|
29
|
21
|
|
|
2025/05
|
55
|
48
|
48
|
48
|
35
|
28
|
28
|
30
|
40
|
45
|
45
|
43
|
49
|
39
|
46
|
37
|
38
|
41
|
38
|
39
|
44
|
45
|
50
|
44
|
32
|
30
|
24
|
24
|
27
|
21
|
21
|
|
2025/04
|
41
|
37
|
48
|
50
|
35
|
30
|
34
|
46
|
51
|
44
|
58
|
144
|
103
|
75
|
66
|
63
|
43
|
37
|
38
|
31
|
33
|
36
|
65
|
37
|
40
|
44
|
36
|
32
|
36
|
36
|
|
|
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