Air Quality
Excellent
No health implications.
21
PM2.5
43
PM10
57
O3
0.5
CO
7
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 May
64
Good
Mon
26 May
69
Good
Tue
27 May
66
Good
Wed
28 May
60
Good
Thu
29 May
64
Good
Fri
30 May
15
Excellent
Sat
31 May
19
Excellent
Air quality in the last 12 months (Songpan)
|
2025/04
|
55
|
66
|
66
|
64
|
63
|
48
|
47
|
59
|
63
|
58
|
41
|
143
|
120
|
68
|
67
|
69
|
57
|
84
|
77
|
57
|
60
|
66
|
53
|
39
|
38
|
28
|
32
|
45
|
34
|
43
|
|
|
2025/03
|
47
|
58
|
48
|
37
|
33
|
42
|
59
|
55
|
32
|
42
|
64
|
86
|
65
|
30
|
38
|
37
|
43
|
46
|
49
|
53
|
48
|
49
|
53
|
46
|
43
|
64
|
126
|
67
|
70
|
64
|
56
|
|
2025/02
|
33
|
36
|
40
|
38
|
37
|
39
|
38
|
33
|
36
|
38
|
52
|
60
|
51
|
51
|
49
|
48
|
35
|
34
|
36
|
36
|
32
|
24
|
33
|
26
|
31
|
37
|
44
|
45
|
|||
|
2025/01
|
78
|
73
|
73
|
78
|
65
|
58
|
49
|
53
|
55
|
48
|
42
|
52
|
53
|
54
|
49
|
35
|
52
|
48
|
67
|
77
|
76
|
79
|
82
|
56
|
48
|
62
|
51
|
75
|
129
|
53
|
46
|
|
2024/12
|
69
|
72
|
64
|
48
|
47
|
42
|
41
|
22
|
23
|
34
|
45
|
40
|
39
|
47
|
56
|
65
|
74
|
68
|
54
|
46
|
51
|
38
|
48
|
52
|
56
|
57
|
67
|
64
|
58
|
57
|
62
|
|
2024/11
|
32
|
31
|
33
|
28
|
32
|
32
|
34
|
42
|
30
|
24
|
35
|
26
|
32
|
31
|
28
|
27
|
27
|
21
|
22
|
34
|
35
|
40
|
30
|
23
|
32
|
38
|
43
|
48
|
51
|
59
|
|
|
2024/10
|
25
|
30
|
29
|
25
|
32
|
39
|
40
|
35
|
31
|
28
|
28
|
23
|
28
|
34
|
32
|
32
|
24
|
35
|
20
|
18
|
28
|
34
|
39
|
39
|
33
|
22
|
33
|
39
|
38
|
30
|
29
|
|
2024/09
|
31
|
34
|
31
|
31
|
19
|
24
|
25
|
31
|
28
|
18
|
20
|
23
|
23
|
25
|
22
|
25
|
29
|
31
|
29
|
27
|
22
|
30
|
36
|
39
|
40
|
43
|
51
|
42
|
23
|
22
|
|
|
2024/08
|
33
|
37
|
22
|
20
|
25
|
29
|
23
|
22
|
39
|
48
|
40
|
36
|
37
|
43
|
25
|
30
|
31
|
28
|
36
|
38
|
36
|
40
|
38
|
32
|
36
|
27
|
32
|
30
|
25
|
25
|
32
|
|
2024/07
|
18
|
27
|
20
|
20
|
22
|
41
|
18
|
14
|
17
|
23
|
27
|
30
|
22
|
17
|
16
|
20
|
18
|
18
|
19
|
15
|
29
|
20
|
21
|
29
|
48
|
52
|
36
|
31
|
23
|
27
|
30
|
|
2024/06
|
36
|
26
|
31
|
26
|
30
|
27
|
35
|
28
|
29
|
38
|
36
|
38
|
42
|
36
|
40
|
27
|
23
|
25
|
25
|
25
|
28
|
24
|
34
|
38
|
25
|
28
|
21
|
23
|
36
|
34
|
|
|
2024/05
|
27
|
21
|
20
|
41
|
52
|
54
|
56
|
40
|
46
|
47
|
48
|
57
|
54
|
45
|
40
|
52
|
59
|
50
|
42
|
48
|
40
|
43
|
50
|
51
|
33
|
40
|
37
|
23
|
19
|
33
|
53
|
|
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