Air Quality
Excellent
No health implications.
11
PM2.5
14
PM10
39
O3
0.7
CO
5
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Apr
54
Good
Tue
22 Apr
57
Good
Wed
23 Apr
62
Good
Thu
24 Apr
65
Good
Fri
25 Apr
64
Good
Sat
26 Apr
52
Good
Sun
27 Apr
28
Excellent
Air quality in the last 12 months (Yi County)
|
2025/02
|
24
|
21
|
66
|
46
|
39
|
45
|
70
|
38
|
32
|
38
|
54
|
72
|
95
|
84
|
59
|
46
|
54
|
34
|
34
|
22
|
17
|
21
|
45
|
66
|
59
|
44
|
38
|
32
|
|||
|
2025/01
|
74
|
65
|
90
|
74
|
74
|
59
|
62
|
52
|
53
|
34
|
41
|
62
|
58
|
57
|
78
|
40
|
45
|
45
|
50
|
62
|
61
|
62
|
85
|
77
|
42
|
29
|
42
|
67
|
143
|
70
|
45
|
|
2024/12
|
43
|
48
|
70
|
71
|
36
|
41
|
69
|
65
|
47
|
47
|
23
|
59
|
73
|
69
|
52
|
42
|
49
|
65
|
47
|
45
|
66
|
67
|
62
|
68
|
77
|
88
|
96
|
81
|
52
|
62
|
73
|
|
2024/11
|
13
|
29
|
29
|
40
|
54
|
36
|
33
|
34
|
34
|
33
|
28
|
31
|
35
|
33
|
22
|
24
|
16
|
23
|
32
|
33
|
32
|
36
|
53
|
41
|
26
|
32
|
35
|
44
|
37
|
42
|
|
|
2024/10
|
24
|
33
|
27
|
30
|
32
|
18
|
9
|
24
|
34
|
41
|
50
|
53
|
51
|
47
|
26
|
15
|
18
|
29
|
16
|
26
|
29
|
27
|
38
|
35
|
36
|
26
|
11
|
34
|
41
|
31
|
24
|
|
2024/09
|
35
|
40
|
44
|
42
|
36
|
31
|
39
|
44
|
37
|
34
|
20
|
20
|
28
|
31
|
31
|
24
|
21
|
21
|
31
|
20
|
16
|
30
|
26
|
27
|
34
|
44
|
26
|
25
|
33
|
33
|
|
|
2024/08
|
17
|
20
|
24
|
28
|
30
|
29
|
31
|
30
|
37
|
38
|
36
|
34
|
24
|
17
|
25
|
35
|
39
|
43
|
26
|
24
|
21
|
29
|
32
|
35
|
38
|
45
|
40
|
20
|
28
|
32
|
30
|
|
2024/07
|
12
|
16
|
17
|
20
|
18
|
19
|
21
|
23
|
26
|
28
|
27
|
29
|
26
|
22
|
34
|
29
|
22
|
19
|
20
|
22
|
24
|
29
|
33
|
30
|
22
|
17
|
13
|
12
|
17
|
23
|
24
|
|
2024/06
|
14
|
24
|
25
|
32
|
27
|
21
|
20
|
26
|
28
|
19
|
19
|
23
|
26
|
32
|
34
|
44
|
28
|
20
|
12
|
14
|
20
|
28
|
18
|
16
|
16
|
12
|
9
|
11
|
19
|
19
|
|
|
2024/05
|
16
|
30
|
37
|
21
|
16
|
20
|
33
|
48
|
51
|
50
|
41
|
52
|
58
|
39
|
49
|
47
|
46
|
47
|
51
|
50
|
29
|
25
|
26
|
19
|
26
|
25
|
19
|
17
|
30
|
32
|
17
|
|
2024/04
|
26
|
16
|
19
|
28
|
40
|
40
|
30
|
16
|
30
|
46
|
46
|
30
|
27
|
19
|
32
|
54
|
25
|
23
|
29
|
32
|
33
|
23
|
31
|
79
|
53
|
35
|
37
|
36
|
21
|
17
|
|
|
2024/03
|
41
|
46
|
34
|
32
|
19
|
41
|
54
|
53
|
53
|
54
|
55
|
62
|
81
|
58
|
55
|
56
|
52
|
51
|
54
|
58
|
44
|
48
|
49
|
41
|
26
|
24
|
31
|
24
|
36
|
40
|
36
|
|
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