Air Quality
Excellent
No health implications.
8
PM2.5
25
PM10
104
O3
0.3
CO
6
SO2
3
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 May
75
Good
Sun
31 May
86
Good
Mon
1 Jun
63
Good
Tue
2 Jun
57
Good
Wed
3 Jun
52
Good
Thu
4 Jun
48
Excellent
Fri
5 Jun
47
Excellent
Air quality in the last 12 months (Yi'an)
|
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
|
|
|
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
|
|
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