Air Quality
Excellent
No health implications.
13
PM2.5
37
PM10
94
O3
0.6
CO
7
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 May
69
Good
Mon
29 May
47
Excellent
Tue
30 May
50
Excellent
Wed
31 May
48
Excellent
Thu
1 Jun
59
Good
Fri
2 Jun
52
Good
Sat
3 Jun
55
Good
Air quality in the last 12 months (Yun'an)
|
2023/04
|
25
|
33
|
27
|
35
|
35
|
40
|
25
|
53
|
64
|
83
|
63
|
53
|
47
|
52
|
37
|
53
|
51
|
43
|
37
|
59
|
44
|
46
|
33
|
26
|
15
|
30
|
63
|
50
|
30
|
48
|
|
|
2023/03
|
80
|
73
|
85
|
92
|
81
|
68
|
57
|
54
|
58
|
62
|
51
|
58
|
81
|
86
|
57
|
56
|
45
|
64
|
47
|
43
|
39
|
47
|
46
|
33
|
36
|
11
|
12
|
17
|
13
|
15
|
16
|
|
2023/02
|
56
|
55
|
49
|
79
|
25
|
35
|
48
|
46
|
44
|
43
|
47
|
30
|
29
|
18
|
23
|
38
|
62
|
66
|
62
|
34
|
67
|
70
|
76
|
79
|
39
|
40
|
67
|
71
|
|||
|
2023/01
|
40
|
48
|
46
|
56
|
59
|
57
|
61
|
62
|
22
|
17
|
15
|
17
|
24
|
33
|
16
|
16
|
29
|
38
|
47
|
49
|
56
|
70
|
90
|
45
|
66
|
54
|
38
|
58
|
54
|
49
|
54
|
|
2022/12
|
14
|
24
|
43
|
42
|
22
|
25
|
39
|
42
|
46
|
49
|
47
|
72
|
64
|
61
|
52
|
33
|
55
|
42
|
52
|
62
|
52
|
60
|
58
|
63
|
54
|
61
|
66
|
76
|
70
|
39
|
45
|
|
2022/11
|
42
|
31
|
26
|
15
|
18
|
22
|
37
|
34
|
29
|
51
|
51
|
59
|
62
|
80
|
80
|
82
|
49
|
72
|
69
|
40
|
60
|
29
|
11
|
11
|
14
|
14
|
30
|
28
|
34
|
16
|
|
|
2022/10
|
21
|
29
|
31
|
38
|
50
|
42
|
47
|
32
|
38
|
30
|
38
|
48
|
49
|
53
|
53
|
57
|
58
|
57
|
42
|
64
|
72
|
61
|
63
|
78
|
77
|
57
|
69
|
59
|
38
|
28
|
40
|
|
2022/09
|
27
|
30
|
37
|
48
|
52
|
56
|
52
|
36
|
23
|
33
|
38
|
51
|
60
|
60
|
63
|
68
|
65
|
57
|
62
|
68
|
51
|
52
|
55
|
61
|
65
|
66
|
70
|
56
|
39
|
25
|
|
|
2022/08
|
39
|
34
|
36
|
21
|
18
|
27
|
41
|
33
|
24
|
12
|
15
|
23
|
25
|
30
|
38
|
35
|
37
|
28
|
33
|
19
|
19
|
32
|
37
|
46
|
18
|
27
|
28
|
37
|
34
|
42
|
41
|
|
2022/07
|
21
|
15
|
21
|
26
|
26
|
21
|
17
|
32
|
36
|
34
|
32
|
30
|
32
|
36
|
28
|
32
|
31
|
30
|
27
|
27
|
28
|
33
|
40
|
48
|
52
|
48
|
51
|
55
|
55
|
57
|
56
|
|
2022/06
|
29
|
31
|
28
|
27
|
27
|
29
|
33
|
27
|
18
|
26
|
21
|
27
|
29
|
25
|
29
|
30
|
24
|
27
|
24
|
20
|
28
|
25
|
23
|
22
|
24
|
20
|
21
|
22
|
27
|
27
|
|
|
2022/05
|
18
|
23
|
41
|
58
|
81
|
64
|
53
|
60
|
67
|
39
|
20
|
21
|
15
|
18
|
17
|
20
|
36
|
60
|
53
|
51
|
64
|
40
|
36
|
37
|
34
|
24
|
31
|
31
|
29
|
30
|
30
|
|
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