Air Quality
Excellent
No health implications.
18
PM2.5
25
PM10
54
O3
0.5
CO
5
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Mar
35
Excellent
Tue
18 Mar
39
Excellent
Wed
19 Mar
35
Excellent
Thu
20 Mar
38
Excellent
Fri
21 Mar
38
Excellent
Sat
22 Mar
37
Excellent
Sun
23 Mar
49
Excellent
Air quality in the last 12 months (Ludian)
|
2025/02
|
32
|
32
|
25
|
43
|
34
|
25
|
27
|
27
|
35
|
36
|
44
|
36
|
35
|
41
|
45
|
42
|
41
|
35
|
42
|
33
|
35
|
30
|
28
|
32
|
30
|
36
|
37
|
34
|
|||
|
2025/01
|
64
|
59
|
57
|
61
|
49
|
65
|
32
|
30
|
32
|
30
|
29
|
43
|
44
|
34
|
43
|
50
|
49
|
41
|
46
|
52
|
53
|
49
|
46
|
36
|
29
|
44
|
49
|
54
|
48
|
45
|
32
|
|
2024/12
|
50
|
50
|
44
|
39
|
35
|
38
|
39
|
31
|
32
|
28
|
35
|
34
|
32
|
31
|
39
|
47
|
38
|
46
|
42
|
37
|
39
|
38
|
43
|
36
|
38
|
39
|
44
|
43
|
52
|
41
|
45
|
|
2024/11
|
30
|
34
|
43
|
28
|
30
|
39
|
34
|
27
|
30
|
40
|
39
|
32
|
35
|
46
|
51
|
42
|
39
|
37
|
31
|
33
|
33
|
36
|
38
|
32
|
29
|
26
|
30
|
35
|
44
|
40
|
|
|
2024/10
|
22
|
30
|
29
|
29
|
26
|
22
|
28
|
36
|
31
|
23
|
25
|
27
|
28
|
31
|
31
|
30
|
30
|
39
|
36
|
38
|
27
|
27
|
28
|
41
|
34
|
29
|
29
|
32
|
40
|
39
|
32
|
|
2024/09
|
30
|
20
|
27
|
31
|
34
|
33
|
32
|
26
|
22
|
25
|
33
|
25
|
27
|
35
|
40
|
36
|
27
|
30
|
37
|
34
|
33
|
30
|
31
|
41
|
32
|
36
|
30
|
26
|
27
|
25
|
|
|
2024/08
|
33
|
36
|
36
|
26
|
22
|
26
|
22
|
20
|
23
|
30
|
58
|
45
|
45
|
47
|
39
|
37
|
34
|
32
|
40
|
37
|
37
|
36
|
30
|
35
|
34
|
28
|
38
|
36
|
37
|
34
|
41
|
|
2024/07
|
23
|
29
|
21
|
14
|
15
|
22
|
22
|
21
|
24
|
24
|
15
|
19
|
25
|
22
|
17
|
21
|
28
|
30
|
27
|
29
|
25
|
26
|
27
|
33
|
26
|
32
|
34
|
16
|
18
|
18
|
26
|
|
2024/06
|
38
|
26
|
22
|
20
|
23
|
23
|
15
|
16
|
15
|
21
|
18
|
28
|
34
|
30
|
41
|
38
|
18
|
22
|
20
|
22
|
27
|
25
|
24
|
26
|
26
|
30
|
17
|
16
|
19
|
23
|
|
|
2024/05
|
29
|
34
|
28
|
24
|
43
|
45
|
30
|
31
|
20
|
30
|
23
|
27
|
32
|
37
|
31
|
33
|
36
|
29
|
28
|
34
|
32
|
36
|
35
|
38
|
29
|
21
|
28
|
24
|
21
|
20
|
37
|
|
2024/04
|
34
|
40
|
49
|
29
|
32
|
30
|
29
|
29
|
30
|
39
|
43
|
51
|
43
|
50
|
54
|
61
|
48
|
39
|
33
|
37
|
36
|
37
|
27
|
33
|
30
|
40
|
42
|
43
|
41
|
29
|
|
|
2024/03
|
36
|
32
|
32
|
33
|
37
|
33
|
28
|
33
|
31
|
35
|
30
|
49
|
50
|
40
|
53
|
49
|
50
|
32
|
46
|
46
|
52
|
39
|
26
|
31
|
38
|
37
|
47
|
26
|
36
|
52
|
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