Air Quality
Excellent
No health implications.
10
PM2.5
12
PM10
38
O3
0.5
CO
4
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Aug
56
Good
Wed
20 Aug
55
Good
Thu
21 Aug
56
Good
Fri
22 Aug
56
Good
Sat
23 Aug
58
Good
Sun
24 Aug
59
Good
Mon
25 Aug
32
Excellent
Air quality in the last 12 months (Yun'an)
|
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
|
|
|
2025/03
|
38
|
36
|
44
|
30
|
13
|
14
|
18
|
30
|
54
|
68
|
50
|
35
|
31
|
28
|
22
|
17
|
42
|
36
|
45
|
52
|
60
|
64
|
60
|
72
|
71
|
53
|
42
|
44
|
10
|
11
|
13
|
|
2025/02
|
35
|
36
|
15
|
23
|
41
|
45
|
24
|
35
|
52
|
48
|
58
|
52
|
40
|
63
|
49
|
95
|
54
|
52
|
60
|
49
|
38
|
41
|
24
|
27
|
70
|
78
|
98
|
61
|
|||
|
2025/01
|
74
|
71
|
65
|
72
|
84
|
86
|
81
|
84
|
80
|
46
|
49
|
61
|
61
|
82
|
61
|
71
|
61
|
66
|
67
|
71
|
68
|
69
|
70
|
56
|
45
|
19
|
35
|
35
|
111
|
62
|
41
|
|
2024/12
|
62
|
74
|
75
|
67
|
77
|
77
|
49
|
22
|
56
|
61
|
62
|
29
|
41
|
50
|
50
|
57
|
62
|
52
|
47
|
64
|
65
|
65
|
71
|
68
|
69
|
60
|
81
|
80
|
81
|
80
|
71
|
|
2024/11
|
49
|
44
|
56
|
49
|
47
|
55
|
47
|
51
|
67
|
49
|
51
|
53
|
50
|
42
|
27
|
35
|
39
|
21
|
18
|
17
|
18
|
26
|
34
|
47
|
35
|
23
|
35
|
46
|
49
|
54
|
|
|
2024/10
|
37
|
24
|
46
|
46
|
46
|
49
|
56
|
55
|
52
|
39
|
46
|
59
|
67
|
57
|
42
|
58
|
42
|
41
|
38
|
26
|
38
|
37
|
20
|
41
|
46
|
35
|
27
|
17
|
20
|
34
|
51
|
|
2024/09
|
29
|
35
|
30
|
37
|
36
|
17
|
16
|
19
|
21
|
26
|
39
|
46
|
40
|
36
|
22
|
32
|
29
|
25
|
36
|
43
|
31
|
14
|
15
|
14
|
22
|
33
|
45
|
51
|
46
|
40
|
|
|
2024/08
|
21
|
29
|
29
|
35
|
34
|
39
|
42
|
36
|
34
|
27
|
34
|
27
|
24
|
26
|
25
|
17
|
22
|
19
|
28
|
26
|
19
|
27
|
32
|
32
|
27
|
35
|
35
|
44
|
38
|
32
|
36
|
|
2024/07
|
27
|
25
|
16
|
21
|
21
|
18
|
18
|
18
|
20
|
16
|
16
|
16
|
15
|
23
|
31
|
23
|
19
|
18
|
27
|
26
|
25
|
22
|
20
|
24
|
26
|
31
|
23
|
19
|
12
|
19
|
17
|
|
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