Air Quality
Excellent
No health implications.
7
PM2.5
29
PM10
52
O3
0.4
CO
6
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Sep
52
Good
Wed
16 Sep
49
Excellent
Thu
17 Sep
50
Excellent
Fri
18 Sep
51
Good
Sat
19 Sep
49
Excellent
Sun
20 Sep
53
Good
Mon
21 Sep
44
Excellent
Air quality in the last 12 months (Yi'an)
|
2026/08
|
19
|
20
|
24
|
21
|
26
|
24
|
25
|
21
|
24
|
28
|
30
|
24
|
17
|
19
|
21
|
23
|
22
|
20
|
22
|
29
|
25
|
19
|
21
|
21
|
20
|
18
|
18
|
21
|
20
|
15
|
15
|
|
2026/07
|
39
|
33
|
28
|
28
|
30
|
27
|
24
|
17
|
18
|
30
|
36
|
22
|
21
|
22
|
21
|
19
|
22
|
24
|
27
|
34
|
28
|
31
|
36
|
30
|
23
|
24
|
23
|
30
|
17
|
19
|
24
|
|
2026/06
|
28
|
22
|
25
|
22
|
15
|
17
|
20
|
17
|
20
|
24
|
29
|
27
|
23
|
22
|
20
|
29
|
32
|
31
|
37
|
37
|
28
|
27
|
31
|
35
|
32
|
29
|
31
|
26
|
34
|
43
|
|
|
2026/05
|
28
|
27
|
28
|
31
|
48
|
26
|
31
|
32
|
33
|
56
|
49
|
57
|
47
|
69
|
28
|
24
|
21
|
25
|
34
|
35
|
40
|
39
|
33
|
41
|
28
|
25
|
24
|
24
|
23
|
26
|
51
|
|
2026/04
|
46
|
74
|
57
|
52
|
57
|
37
|
24
|
48
|
27
|
30
|
26
|
31
|
26
|
38
|
61
|
46
|
52
|
27
|
27
|
44
|
24
|
24
|
25
|
30
|
27
|
24
|
24
|
28
|
32
|
67
|
|
|
2026/03
|
32
|
31
|
53
|
46
|
31
|
31
|
35
|
53
|
43
|
37
|
30
|
39
|
73
|
32
|
32
|
27
|
97
|
46
|
42
|
56
|
127
|
73
|
75
|
139
|
128
|
56
|
45
|
64
|
126
|
35
|
76
|
|
2026/02
|
31
|
37
|
45
|
37
|
32
|
21
|
27
|
33
|
61
|
92
|
40
|
50
|
60
|
61
|
20
|
55
|
46
|
22
|
47
|
86
|
106
|
42
|
23
|
19
|
54
|
25
|
24
|
29
|
|||
|
2026/01
|
30
|
33
|
46
|
24
|
25
|
56
|
26
|
34
|
55
|
49
|
49
|
73
|
39
|
33
|
55
|
46
|
31
|
42
|
34
|
27
|
29
|
23
|
28
|
28
|
23
|
48
|
40
|
32
|
29
|
25
|
35
|
|
2025/12
|
23
|
25
|
31
|
33
|
48
|
52
|
72
|
35
|
33
|
24
|
23
|
29
|
48
|
55
|
47
|
27
|
45
|
88
|
79
|
37
|
34
|
55
|
60
|
41
|
29
|
29
|
50
|
65
|
26
|
28
|
30
|
|
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
|
|
|
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