Air Quality
Excellent
No health implications.
18
PM2.5
47
PM10
8
O3
0.5
CO
9
SO2
25
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Jul
60
Good
Sun
20 Jul
56
Good
Mon
21 Jul
51
Good
Tue
22 Jul
55
Good
Wed
23 Jul
55
Good
Thu
24 Jul
53
Good
Fri
25 Jul
23
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