Air Quality
Excellent
No health implications.
17
PM2.5
37
PM10
67
O3
0.4
CO
8
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Apr
81
Good
Fri
26 Apr
78
Good
Sat
27 Apr
74
Good
Sun
28 Apr
77
Good
Mon
29 Apr
64
Good
Tue
30 Apr
66
Good
Wed
1 May
66
Good
Yi'an Air quality rank
Air quality in the last 12 months (Yi'an)
|
2024/02
|
28
|
44
|
43
|
43
|
65
|
63
|
74
|
48
|
142
|
156
|
91
|
66
|
58
|
32
|
29
|
50
|
83
|
48
|
30
|
28
|
28
|
29
|
31
|
98
|
81
|
30
|
46
|
39
|
37
|
||
|
2024/01
|
47
|
86
|
100
|
63
|
32
|
78
|
32
|
44
|
58
|
45
|
52
|
40
|
62
|
33
|
27
|
46
|
56
|
29
|
37
|
30
|
22
|
29
|
41
|
30
|
77
|
152
|
93
|
167
|
41
|
50
|
41
|
|
2023/12
|
38
|
54
|
47
|
38
|
54
|
26
|
31
|
37
|
25
|
27
|
30
|
50
|
68
|
55
|
27
|
22
|
28
|
39
|
60
|
33
|
39
|
48
|
56
|
61
|
70
|
61
|
63
|
97
|
76
|
45
|
28
|
|
2023/11
|
56
|
69
|
23
|
48
|
38
|
40
|
35
|
50
|
68
|
43
|
28
|
30
|
31
|
68
|
95
|
146
|
55
|
25
|
28
|
34
|
47
|
22
|
20
|
28
|
29
|
53
|
74
|
41
|
32
|
30
|
|
|
2023/10
|
20
|
21
|
24
|
15
|
24
|
23
|
25
|
32
|
30
|
22
|
28
|
32
|
30
|
36
|
21
|
18
|
36
|
23
|
18
|
18
|
23
|
21
|
40
|
60
|
40
|
23
|
32
|
46
|
125
|
76
|
116
|
|
2023/09
|
18
|
26
|
31
|
20
|
19
|
26
|
43
|
31
|
23
|
22
|
22
|
16
|
21
|
25
|
25
|
16
|
31
|
20
|
17
|
17
|
19
|
18
|
20
|
25
|
27
|
28
|
22
|
19
|
21
|
18
|
|
|
2023/08
|
27
|
24
|
17
|
15
|
17
|
23
|
23
|
17
|
16
|
17
|
19
|
15
|
20
|
23
|
28
|
27
|
23
|
22
|
19
|
24
|
29
|
25
|
19
|
18
|
16
|
16
|
21
|
26
|
20
|
14
|
13
|
|
2023/07
|
32
|
30
|
32
|
30
|
28
|
29
|
28
|
29
|
28
|
45
|
102
|
109
|
61
|
32
|
21
|
18
|
19
|
31
|
30
|
29
|
21
|
21
|
17
|
26
|
63
|
36
|
28
|
28
|
25
|
22
|
28
|
|
2023/06
|
21
|
23
|
19
|
20
|
23
|
24
|
24
|
21
|
23
|
28
|
28
|
33
|
35
|
32
|
26
|
23
|
21
|
25
|
36
|
36
|
31
|
24
|
29
|
40
|
48
|
46
|
31
|
28
|
32
|
28
|
|
|
2023/05
|
31
|
108
|
107
|
29
|
28
|
29
|
30
|
35
|
26
|
28
|
37
|
48
|
35
|
39
|
31
|
27
|
26
|
31
|
32
|
197
|
54
|
29
|
31
|
59
|
90
|
41
|
23
|
18
|
24
|
23
|
30
|
|
2023/04
|
168
|
169
|
76
|
41
|
67
|
89
|
30
|
32
|
90
|
186
|
147
|
32
|
32
|
26
|
32
|
60
|
59
|
49
|
22
|
78
|
29
|
24
|
30
|
34
|
31
|
44
|
42
|
51
|
27
|
26
|
|
|
2023/03
|
29
|
33
|
32
|
46
|
93
|
33
|
22
|
24
|
30
|
47
|
29
|
25
|
28
|
29
|
33
|
30
|
24
|
28
|
32
|
77
|
90
|
235
|
42
|
32
|
36
|
48
|
48
|
71
|
58
|
39
|
168
|
|
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