Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
25
PM2.5
51
*
PM10
99
O3
0.7
CO
14
SO2
22
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
16 May
86
Good
Sat
17 May
61
Good
Sun
18 May
80
Good
Mon
19 May
67
Good
Tue
20 May
67
Good
Wed
21 May
30
Excellent
Thu
22 May
30
Excellent
Air quality in the last 12 months (Yi County)
|
2025/02
|
78
|
77
|
36
|
28
|
37
|
63
|
61
|
41
|
45
|
83
|
100
|
47
|
80
|
84
|
121
|
44
|
26
|
28
|
37
|
40
|
35
|
36
|
38
|
72
|
71
|
73
|
133
|
208
|
|||
|
2025/01
|
45
|
35
|
58
|
88
|
81
|
57
|
36
|
36
|
32
|
50
|
75
|
87
|
94
|
44
|
39
|
64
|
92
|
124
|
59
|
79
|
55
|
65
|
115
|
126
|
99
|
99
|
56
|
45
|
157
|
47
|
75
|
|
2024/12
|
70
|
28
|
50
|
45
|
51
|
30
|
38
|
50
|
95
|
55
|
47
|
73
|
54
|
47
|
34
|
59
|
32
|
47
|
64
|
57
|
34
|
56
|
50
|
74
|
87
|
36
|
30
|
44
|
82
|
77
|
53
|
|
2024/11
|
73
|
52
|
62
|
27
|
42
|
48
|
91
|
117
|
72
|
52
|
50
|
57
|
60
|
42
|
58
|
28
|
25
|
26
|
71
|
82
|
57
|
41
|
73
|
146
|
65
|
22
|
35
|
49
|
63
|
70
|
|
|
2024/10
|
23
|
24
|
31
|
47
|
64
|
33
|
33
|
36
|
54
|
29
|
43
|
44
|
60
|
44
|
24
|
42
|
57
|
42
|
31
|
38
|
40
|
28
|
32
|
46
|
89
|
55
|
30
|
64
|
82
|
32
|
76
|
|
2024/09
|
19
|
20
|
27
|
29
|
15
|
26
|
26
|
31
|
37
|
22
|
35
|
31
|
35
|
13
|
27
|
37
|
25
|
28
|
43
|
9
|
14
|
21
|
31
|
48
|
38
|
35
|
40
|
50
|
38
|
14
|
|
|
2024/08
|
31
|
19
|
45
|
21
|
21
|
26
|
35
|
47
|
44
|
27
|
49
|
24
|
15
|
21
|
24
|
31
|
40
|
41
|
27
|
19
|
15
|
20
|
24
|
40
|
25
|
27
|
22
|
24
|
37
|
42
|
23
|
|
2024/07
|
52
|
56
|
27
|
42
|
65
|
45
|
24
|
54
|
56
|
50
|
63
|
77
|
52
|
48
|
42
|
21
|
25
|
39
|
49
|
38
|
43
|
29
|
37
|
29
|
21
|
10
|
16
|
18
|
36
|
37
|
31
|
|
2024/06
|
24
|
38
|
37
|
43
|
42
|
45
|
40
|
37
|
42
|
50
|
57
|
53
|
31
|
26
|
16
|
30
|
56
|
58
|
44
|
26
|
25
|
64
|
77
|
15
|
22
|
40
|
58
|
39
|
27
|
27
|
|
|
2024/05
|
45
|
46
|
59
|
50
|
46
|
60
|
55
|
66
|
73
|
74
|
77
|
36
|
55
|
57
|
35
|
49
|
59
|
57
|
30
|
22
|
52
|
56
|
29
|
24
|
50
|
45
|
19
|
35
|
52
|
42
|
16
|
|
2024/04
|
58
|
77
|
38
|
46
|
78
|
81
|
74
|
63
|
72
|
80
|
101
|
93
|
51
|
37
|
168
|
53
|
62
|
54
|
41
|
82
|
86
|
48
|
33
|
30
|
52
|
60
|
34
|
15
|
37
|
37
|
|
|
2024/03
|
29
|
50
|
45
|
75
|
53
|
45
|
58
|
43
|
72
|
121
|
89
|
49
|
72
|
116
|
93
|
203
|
72
|
54
|
27
|
27
|
68
|
52
|
71
|
23
|
25
|
63
|
94
|
224
|
79
|
65
|
68
|
|
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