Air Quality
Excellent
No health implications.
3
PM2.5
6
PM10
18
O3
0.4
CO
4
SO2
21
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Apr
55
Good
Fri
24 Apr
60
Good
Sat
25 Apr
80
Good
Sun
26 Apr
81
Good
Mon
27 Apr
57
Good
Tue
28 Apr
55
Good
Wed
29 Apr
17
Excellent
Air quality in the last 12 months (Yun'an)
|
2026/03
|
15
|
21
|
12
|
15
|
26
|
26
|
43
|
54
|
50
|
17
|
34
|
40
|
59
|
47
|
48
|
42
|
35
|
33
|
48
|
31
|
42
|
36
|
39
|
43
|
47
|
35
|
31
|
35
|
34
|
31
|
38
|
|
2026/02
|
32
|
41
|
50
|
58
|
50
|
36
|
33
|
26
|
44
|
54
|
57
|
38
|
40
|
47
|
28
|
30
|
39
|
37
|
51
|
50
|
50
|
35
|
41
|
46
|
52
|
40
|
41
|
15
|
|||
|
2026/01
|
70
|
22
|
36
|
58
|
56
|
41
|
46
|
48
|
52
|
59
|
53
|
62
|
63
|
70
|
73
|
70
|
98
|
91
|
69
|
60
|
29
|
32
|
32
|
54
|
80
|
86
|
61
|
59
|
64
|
55
|
38
|
|
2025/12
|
54
|
30
|
59
|
73
|
68
|
74
|
81
|
64
|
63
|
70
|
60
|
58
|
37
|
36
|
49
|
62
|
49
|
50
|
73
|
81
|
54
|
82
|
89
|
60
|
19
|
34
|
49
|
53
|
65
|
50
|
64
|
|
2025/11
|
32
|
34
|
28
|
11
|
22
|
34
|
38
|
42
|
27
|
17
|
19
|
23
|
33
|
36
|
47
|
50
|
49
|
32
|
26
|
38
|
38
|
47
|
58
|
57
|
43
|
56
|
54
|
60
|
62
|
69
|
|
|
2025/10
|
43
|
31
|
27
|
38
|
15
|
17
|
27
|
43
|
40
|
44
|
49
|
39
|
30
|
32
|
35
|
55
|
59
|
52
|
27
|
17
|
15
|
12
|
20
|
37
|
44
|
52
|
39
|
44
|
52
|
53
|
33
|
|
2025/09
|
25
|
29
|
27
|
28
|
29
|
32
|
41
|
11
|
17
|
27
|
27
|
25
|
28
|
28
|
27
|
37
|
39
|
38
|
39
|
32
|
17
|
19
|
24
|
11
|
16
|
25
|
37
|
36
|
40
|
32
|
|
|
2025/08
|
27
|
24
|
24
|
37
|
26
|
18
|
30
|
32
|
30
|
29
|
28
|
29
|
34
|
33
|
14
|
29
|
28
|
13
|
18
|
23
|
23
|
32
|
37
|
34
|
24
|
36
|
39
|
38
|
36
|
29
|
24
|
|
2025/07
|
18
|
25
|
32
|
34
|
44
|
43
|
43
|
26
|
26
|
29
|
22
|
31
|
27
|
38
|
32
|
29
|
37
|
45
|
34
|
19
|
12
|
14
|
16
|
21
|
28
|
29
|
32
|
36
|
33
|
28
|
24
|
|
2025/06
|
30
|
35
|
18
|
29
|
37
|
26
|
21
|
18
|
30
|
39
|
29
|
16
|
16
|
14
|
13
|
22
|
18
|
15
|
14
|
17
|
16
|
18
|
14
|
18
|
20
|
24
|
17
|
20
|
23
|
18
|
|
|
2025/05
|
33
|
42
|
31
|
32
|
26
|
34
|
22
|
23
|
21
|
35
|
33
|
45
|
48
|
35
|
27
|
18
|
23
|
22
|
27
|
26
|
26
|
24
|
24
|
18
|
34
|
37
|
60
|
63
|
31
|
27
|
34
|
|
2025/04
|
27
|
48
|
62
|
58
|
78
|
79
|
72
|
70
|
69
|
45
|
42
|
59
|
179
|
151
|
100
|
88
|
80
|
66
|
38
|
38
|
29
|
36
|
44
|
35
|
21
|
47
|
56
|
30
|
48
|
47
|
|
|
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