Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
37
PM2.5
81
*
PM10
89
O3
0.4
CO
2
SO2
28
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
26 May
113
Light
Tue
27 May
132
Light
Wed
28 May
139
Light
Thu
29 May
129
Light
Fri
30 May
132
Light
Sat
31 May
47
Excellent
Sun
1 Jun
27
Excellent
Air quality in the last 12 months (Yi County)
|
2025/04
|
52
|
26
|
65
|
81
|
36
|
80
|
84
|
53
|
60
|
71
|
150
|
106
|
53
|
35
|
58
|
87
|
94
|
49
|
48
|
73
|
78
|
49
|
63
|
51
|
64
|
92
|
76
|
58
|
70
|
58
|
|
|
2025/03
|
219
|
84
|
42
|
53
|
68
|
40
|
76
|
118
|
123
|
149
|
182
|
115
|
122
|
72
|
46
|
23
|
34
|
41
|
42
|
34
|
30
|
53
|
135
|
90
|
64
|
78
|
73
|
31
|
25
|
47
|
63
|
|
2025/02
|
96
|
90
|
14
|
27
|
23
|
67
|
17
|
22
|
49
|
77
|
120
|
50
|
71
|
80
|
77
|
29
|
33
|
50
|
42
|
38
|
41
|
37
|
22
|
57
|
60
|
62
|
113
|
169
|
|||
|
2025/01
|
59
|
53
|
50
|
75
|
61
|
20
|
24
|
16
|
24
|
46
|
62
|
53
|
70
|
43
|
33
|
57
|
84
|
101
|
74
|
91
|
64
|
63
|
83
|
109
|
131
|
114
|
14
|
51
|
225
|
76
|
81
|
|
2024/12
|
71
|
27
|
62
|
87
|
39
|
36
|
13
|
43
|
60
|
61
|
59
|
91
|
46
|
29
|
45
|
56
|
39
|
40
|
55
|
57
|
22
|
48
|
59
|
83
|
100
|
44
|
36
|
44
|
74
|
72
|
64
|
|
2024/11
|
86
|
75
|
56
|
26
|
52
|
66
|
113
|
160
|
201
|
157
|
127
|
135
|
127
|
43
|
64
|
62
|
44
|
62
|
70
|
76
|
52
|
39
|
61
|
104
|
65
|
16
|
20
|
25
|
38
|
60
|
|
|
2024/10
|
16
|
24
|
40
|
62
|
90
|
122
|
57
|
63
|
108
|
30
|
66
|
98
|
128
|
95
|
68
|
52
|
64
|
50
|
18
|
32
|
57
|
45
|
48
|
63
|
133
|
199
|
77
|
61
|
99
|
113
|
161
|
|
2024/09
|
40
|
17
|
35
|
56
|
26
|
29
|
29
|
42
|
59
|
31
|
26
|
27
|
38
|
33
|
40
|
54
|
43
|
54
|
50
|
30
|
12
|
18
|
43
|
60
|
59
|
54
|
62
|
63
|
85
|
13
|
|
|
2024/08
|
31
|
51
|
29
|
23
|
21
|
38
|
38
|
37
|
36
|
44
|
18
|
14
|
18
|
31
|
47
|
41
|
36
|
24
|
26
|
21
|
20
|
34
|
35
|
36
|
32
|
11
|
17
|
25
|
39
|
56
|
58
|
|
2024/07
|
25
|
38
|
50
|
63
|
72
|
35
|
50
|
36
|
62
|
70
|
73
|
59
|
44
|
72
|
63
|
45
|
35
|
37
|
53
|
38
|
52
|
42
|
57
|
49
|
17
|
28
|
39
|
38
|
37
|
20
|
28
|
|
2024/06
|
51
|
58
|
52
|
68
|
64
|
66
|
56
|
61
|
52
|
52
|
57
|
70
|
78
|
50
|
48
|
67
|
66
|
65
|
62
|
70
|
51
|
93
|
102
|
38
|
43
|
69
|
62
|
62
|
68
|
39
|
|
|
2024/05
|
54
|
67
|
65
|
73
|
64
|
61
|
67
|
73
|
78
|
95
|
124
|
49
|
71
|
90
|
43
|
68
|
79
|
86
|
69
|
42
|
57
|
80
|
83
|
42
|
23
|
36
|
42
|
68
|
77
|
63
|
31
|
|
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