Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
27
PM2.5
51
*
PM10
40
O3
0.5
CO
11
SO2
52
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
15 Dec
89
Good
Tue
16 Dec
85
Good
Wed
17 Dec
95
Good
Thu
18 Dec
88
Good
Fri
19 Dec
92
Good
Sat
20 Dec
92
Good
Sun
21 Dec
47
Excellent
Air quality in the last 12 months (Yi'an)
|
2025/11
|
73
|
66
|
53
|
59
|
65
|
47
|
21
|
31
|
43
|
67
|
40
|
39
|
51
|
78
|
90
|
112
|
50
|
34
|
39
|
48
|
71
|
87
|
93
|
81
|
91
|
67
|
139
|
90
|
72
|
67
|
|
|
2025/10
|
34
|
48
|
33
|
45
|
70
|
54
|
74
|
54
|
46
|
62
|
81
|
68
|
45
|
47
|
66
|
52
|
46
|
19
|
25
|
31
|
26
|
32
|
38
|
42
|
55
|
57
|
60
|
69
|
66
|
53
|
58
|
|
2025/09
|
26
|
27
|
32
|
43
|
45
|
42
|
57
|
50
|
31
|
30
|
27
|
24
|
27
|
37
|
28
|
34
|
32
|
36
|
38
|
29
|
36
|
35
|
52
|
19
|
32
|
61
|
53
|
54
|
50
|
43
|
|
|
2025/08
|
20
|
20
|
28
|
33
|
39
|
20
|
16
|
21
|
25
|
30
|
17
|
45
|
51
|
24
|
25
|
26
|
31
|
35
|
36
|
27
|
26
|
23
|
24
|
28
|
34
|
25
|
36
|
35
|
50
|
37
|
25
|
|
2025/07
|
25
|
28
|
32
|
33
|
41
|
47
|
39
|
22
|
19
|
32
|
35
|
26
|
35
|
48
|
40
|
33
|
25
|
50
|
32
|
19
|
20
|
14
|
21
|
25
|
26
|
25
|
23
|
25
|
26
|
25
|
24
|
|
2025/06
|
15
|
18
|
45
|
50
|
52
|
41
|
28
|
18
|
46
|
37
|
36
|
36
|
49
|
28
|
19
|
40
|
43
|
21
|
14
|
20
|
17
|
20
|
28
|
45
|
43
|
38
|
25
|
14
|
24
|
21
|
|
|
2025/05
|
53
|
53
|
55
|
45
|
49
|
156
|
121
|
52
|
31
|
37
|
44
|
44
|
47
|
56
|
60
|
40
|
44
|
89
|
59
|
35
|
28
|
36
|
42
|
74
|
62
|
60
|
65
|
60
|
45
|
40
|
32
|
|
2025/04
|
45
|
62
|
56
|
65
|
76
|
61
|
60
|
66
|
65
|
63
|
62
|
184
|
109
|
88
|
48
|
49
|
64
|
67
|
82
|
70
|
60
|
59
|
67
|
71
|
60
|
48
|
42
|
68
|
73
|
55
|
|
|
2025/03
|
41
|
35
|
21
|
45
|
59
|
59
|
58
|
61
|
77
|
68
|
52
|
74
|
50
|
43
|
33
|
49
|
32
|
50
|
43
|
47
|
46
|
51
|
61
|
60
|
60
|
64
|
82
|
69
|
78
|
75
|
47
|
|
2025/02
|
47
|
59
|
96
|
83
|
51
|
49
|
71
|
32
|
37
|
45
|
64
|
91
|
64
|
78
|
95
|
81
|
72
|
45
|
56
|
54
|
32
|
52
|
73
|
75
|
74
|
96
|
70
|
49
|
|||
|
2025/01
|
106
|
113
|
153
|
107
|
107
|
77
|
50
|
61
|
48
|
41
|
61
|
71
|
69
|
88
|
58
|
47
|
65
|
74
|
75
|
117
|
124
|
136
|
159
|
62
|
41
|
54
|
44
|
65
|
127
|
76
|
88
|
|
2024/12
|
60
|
65
|
107
|
69
|
64
|
80
|
110
|
56
|
59
|
66
|
67
|
75
|
79
|
65
|
61
|
61
|
77
|
87
|
43
|
62
|
99
|
58
|
66
|
78
|
105
|
126
|
73
|
93
|
64
|
87
|
85
|
|
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