Air Quality
Excellent
No health implications.
20
PM2.5
49
PM10
5
O3
0.7
CO
10
SO2
34
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Apr
41
Excellent
Sat
20 Apr
40
Excellent
Sun
21 Apr
38
Excellent
Mon
22 Apr
51
Good
Tue
23 Apr
55
Good
Wed
24 Apr
53
Good
Thu
25 Apr
53
Good
Air quality in the last 12 months (Yun'an)
|
2024/02
|
51
|
41
|
29
|
31
|
17
|
15
|
10
|
13
|
27
|
81
|
62
|
59
|
56
|
45
|
38
|
26
|
37
|
28
|
32
|
32
|
38
|
28
|
17
|
18
|
14
|
15
|
13
|
19
|
17
|
||
|
2024/01
|
81
|
66
|
26
|
38
|
61
|
78
|
74
|
68
|
58
|
26
|
43
|
59
|
73
|
82
|
75
|
62
|
61
|
66
|
50
|
37
|
18
|
15
|
23
|
35
|
44
|
45
|
19
|
21
|
54
|
97
|
84
|
|
2023/12
|
36
|
49
|
58
|
59
|
42
|
36
|
46
|
60
|
73
|
65
|
49
|
40
|
48
|
71
|
59
|
20
|
17
|
25
|
13
|
28
|
29
|
52
|
51
|
48
|
53
|
63
|
63
|
62
|
68
|
49
|
46
|
|
2023/11
|
50
|
65
|
60
|
53
|
46
|
42
|
46
|
70
|
68
|
50
|
38
|
17
|
16
|
22
|
29
|
36
|
48
|
57
|
60
|
61
|
76
|
81
|
66
|
65
|
83
|
86
|
76
|
68
|
73
|
41
|
|
|
2023/10
|
41
|
36
|
47
|
44
|
30
|
24
|
26
|
17
|
15
|
13
|
14
|
26
|
35
|
39
|
48
|
51
|
59
|
44
|
28
|
22
|
16
|
17
|
31
|
50
|
51
|
56
|
53
|
58
|
35
|
35
|
44
|
|
2023/09
|
30
|
18
|
24
|
25
|
33
|
36
|
23
|
15
|
23
|
11
|
18
|
27
|
24
|
13
|
12
|
24
|
30
|
27
|
27
|
27
|
33
|
46
|
49
|
52
|
44
|
49
|
55
|
46
|
37
|
41
|
|
|
2023/08
|
32
|
37
|
46
|
26
|
26
|
26
|
24
|
22
|
28
|
25
|
27
|
28
|
26
|
30
|
33
|
36
|
37
|
38
|
42
|
31
|
27
|
32
|
24
|
32
|
22
|
28
|
25
|
31
|
16
|
25
|
31
|
|
2023/07
|
24
|
21
|
19
|
23
|
24
|
20
|
21
|
21
|
19
|
22
|
22
|
21
|
22
|
31
|
45
|
31
|
17
|
22
|
28
|
24
|
27
|
30
|
25
|
25
|
28
|
44
|
40
|
36
|
35
|
29
|
32
|
|
2023/06
|
52
|
46
|
40
|
32
|
30
|
29
|
24
|
22
|
29
|
38
|
40
|
60
|
52
|
33
|
35
|
30
|
19
|
24
|
27
|
28
|
25
|
26
|
23
|
24
|
25
|
25
|
36
|
29
|
29
|
28
|
|
|
2023/05
|
62
|
46
|
32
|
28
|
31
|
36
|
35
|
23
|
47
|
55
|
42
|
15
|
32
|
38
|
58
|
39
|
36
|
52
|
55
|
47
|
38
|
41
|
28
|
46
|
46
|
33
|
33
|
41
|
48
|
52
|
60
|
|
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
|
|
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