Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
74
*
PM2.5
96
PM10
40
O3
0.8
CO
7
SO2
23
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
19 Dec
81
Good
Sat
20 Dec
62
Good
Sun
21 Dec
66
Good
Mon
22 Dec
74
Good
Tue
23 Dec
60
Good
Wed
24 Dec
63
Good
Thu
25 Dec
49
Excellent
Air quality in the last 12 months (Yi'an)
|
2025/11
|
115
|
27
|
74
|
56
|
117
|
64
|
19
|
104
|
46
|
18
|
27
|
51
|
32
|
28
|
71
|
40
|
22
|
36
|
79
|
40
|
46
|
105
|
99
|
33
|
36
|
98
|
43
|
55
|
65
|
29
|
|
|
2025/10
|
33
|
34
|
54
|
25
|
21
|
23
|
37
|
22
|
35
|
35
|
47
|
19
|
29
|
25
|
30
|
35
|
45
|
19
|
19
|
19
|
28
|
26
|
32
|
39
|
62
|
34
|
27
|
33
|
127
|
56
|
56
|
|
2025/09
|
21
|
21
|
32
|
46
|
40
|
19
|
19
|
17
|
15
|
20
|
20
|
28
|
26
|
24
|
19
|
16
|
18
|
22
|
30
|
23
|
22
|
28
|
38
|
22
|
17
|
22
|
28
|
29
|
32
|
46
|
|
|
2025/08
|
22
|
25
|
17
|
20
|
23
|
17
|
18
|
22
|
16
|
14
|
15
|
20
|
22
|
19
|
23
|
15
|
19
|
22
|
24
|
19
|
24
|
16
|
24
|
19
|
24
|
20
|
23
|
25
|
26
|
20
|
31
|
|
2025/07
|
28
|
21
|
21
|
24
|
16
|
19
|
20
|
21
|
23
|
33
|
40
|
22
|
20
|
22
|
26
|
21
|
22
|
23
|
24
|
21
|
18
|
23
|
35
|
32
|
22
|
28
|
21
|
23
|
17
|
16
|
20
|
|
2025/06
|
20
|
24
|
19
|
19
|
21
|
14
|
17
|
22
|
15
|
18
|
18
|
31
|
31
|
20
|
25
|
23
|
20
|
25
|
20
|
17
|
14
|
20
|
32
|
37
|
39
|
34
|
43
|
33
|
29
|
37
|
|
|
2025/05
|
35
|
25
|
23
|
17
|
18
|
23
|
29
|
40
|
31
|
33
|
48
|
73
|
63
|
41
|
62
|
40
|
19
|
24
|
23
|
26
|
24
|
20
|
25
|
29
|
32
|
39
|
41
|
54
|
58
|
59
|
42
|
|
2025/04
|
53
|
48
|
44
|
79
|
56
|
45
|
58
|
41
|
56
|
116
|
74
|
42
|
22
|
21
|
16
|
23
|
45
|
30
|
18
|
55
|
76
|
17
|
29
|
17
|
12
|
21
|
56
|
40
|
72
|
31
|
|
|
2025/03
|
21
|
30
|
39
|
53
|
72
|
60
|
45
|
36
|
77
|
103
|
48
|
46
|
18
|
17
|
18
|
24
|
20
|
19
|
46
|
31
|
16
|
19
|
69
|
35
|
20
|
33
|
15
|
17
|
12
|
18
|
33
|
|
2025/02
|
64
|
131
|
82
|
26
|
45
|
52
|
21
|
17
|
25
|
39
|
72
|
64
|
44
|
28
|
32
|
31
|
23
|
21
|
25
|
28
|
31
|
33
|
30
|
33
|
38
|
22
|
46
|
30
|
|||
|
2025/01
|
115
|
76
|
62
|
129
|
105
|
64
|
51
|
34
|
35
|
55
|
87
|
168
|
190
|
132
|
36
|
38
|
76
|
142
|
171
|
130
|
99
|
67
|
165
|
231
|
230
|
165
|
40
|
44
|
48
|
31
|
41
|
|
2024/12
|
45
|
19
|
23
|
20
|
28
|
19
|
27
|
33
|
100
|
77
|
25
|
43
|
68
|
43
|
31
|
26
|
34
|
38
|
54
|
93
|
44
|
29
|
34
|
42
|
46
|
28
|
31
|
36
|
53
|
91
|
105
|
|
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