Air Quality
Excellent
No health implications.
20
PM2.5
46
PM10
111
O3
0.5
CO
4
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Apr
51
Good
Sat
20 Apr
60
Good
Sun
21 Apr
58
Good
Mon
22 Apr
59
Good
Tue
23 Apr
58
Good
Wed
24 Apr
54
Good
Thu
25 Apr
55
Good
Air quality in the last 12 months (Songpan)
|
2024/02
|
42
|
34
|
27
|
35
|
35
|
42
|
44
|
47
|
73
|
111
|
62
|
58
|
51
|
52
|
38
|
37
|
38
|
56
|
134
|
148
|
71
|
66
|
53
|
70
|
68
|
58
|
51
|
40
|
34
|
||
|
2024/01
|
90
|
55
|
56
|
61
|
60
|
61
|
67
|
67
|
71
|
68
|
75
|
82
|
82
|
65
|
51
|
46
|
48
|
47
|
35
|
46
|
48
|
40
|
39
|
39
|
46
|
51
|
53
|
56
|
57
|
50
|
48
|
|
2023/12
|
44
|
49
|
55
|
61
|
55
|
93
|
72
|
64
|
67
|
75
|
63
|
53
|
52
|
54
|
59
|
57
|
51
|
54
|
59
|
57
|
61
|
61
|
58
|
53
|
60
|
72
|
78
|
83
|
69
|
79
|
85
|
|
2023/11
|
42
|
48
|
54
|
37
|
42
|
42
|
50
|
48
|
51
|
43
|
34
|
43
|
38
|
27
|
42
|
48
|
57
|
60
|
62
|
65
|
59
|
48
|
63
|
60
|
55
|
55
|
56
|
54
|
49
|
48
|
|
|
2023/10
|
30
|
27
|
32
|
25
|
20
|
22
|
29
|
33
|
30
|
35
|
21
|
19
|
27
|
33
|
37
|
41
|
26
|
22
|
26
|
38
|
41
|
50
|
49
|
50
|
49
|
38
|
32
|
41
|
44
|
45
|
39
|
|
2023/09
|
33
|
39
|
49
|
47
|
49
|
38
|
30
|
29
|
28
|
28
|
23
|
28
|
36
|
31
|
31
|
35
|
31
|
29
|
23
|
23
|
28
|
22
|
19
|
18
|
21
|
24
|
23
|
26
|
27
|
30
|
|
|
2023/08
|
31
|
31
|
23
|
27
|
28
|
26
|
24
|
24
|
25
|
27
|
23
|
26
|
37
|
37
|
32
|
28
|
27
|
32
|
33
|
30
|
44
|
39
|
31
|
36
|
29
|
24
|
32
|
32
|
31
|
29
|
35
|
|
2023/07
|
39
|
40
|
26
|
32
|
41
|
36
|
38
|
38
|
43
|
45
|
33
|
23
|
21
|
25
|
37
|
39
|
41
|
34
|
37
|
34
|
36
|
41
|
38
|
28
|
31
|
24
|
19
|
26
|
33
|
31
|
31
|
|
2023/06
|
26
|
24
|
20
|
26
|
29
|
33
|
30
|
35
|
44
|
43
|
45
|
40
|
38
|
43
|
32
|
24
|
23
|
31
|
48
|
39
|
36
|
39
|
39
|
35
|
39
|
42
|
36
|
36
|
37
|
40
|
|
|
2023/05
|
58
|
41
|
35
|
46
|
56
|
40
|
28
|
24
|
20
|
25
|
37
|
48
|
47
|
51
|
53
|
54
|
51
|
37
|
46
|
33
|
46
|
40
|
37
|
43
|
46
|
36
|
34
|
38
|
41
|
37
|
30
|
|
2023/04
|
54
|
41
|
33
|
34
|
35
|
68
|
69
|
61
|
62
|
60
|
80
|
58
|
42
|
66
|
66
|
57
|
60
|
59
|
59
|
158
|
64
|
21
|
22
|
28
|
43
|
49
|
55
|
50
|
50
|
54
|
|
|
2023/03
|
56
|
53
|
54
|
56
|
58
|
56
|
53
|
46
|
49
|
38
|
54
|
48
|
49
|
49
|
71
|
45
|
41
|
30
|
26
|
20
|
46
|
89
|
48
|
32
|
36
|
40
|
35
|
39
|
39
|
47
|
51
|
|
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