Air Quality
Excellent
No health implications.
12
PM2.5
23
PM10
57
O3
0.1
CO
2
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Apr
45
Excellent
Sun
21 Apr
42
Excellent
Mon
22 Apr
44
Excellent
Tue
23 Apr
52
Good
Wed
24 Apr
42
Excellent
Thu
25 Apr
42
Excellent
Fri
26 Apr
39
Excellent
Air quality in the last 12 months (Songtao)
|
2024/02
|
23
|
16
|
16
|
25
|
35
|
40
|
55
|
61
|
87
|
130
|
73
|
60
|
62
|
59
|
52
|
28
|
37
|
44
|
59
|
36
|
16
|
26
|
27
|
23
|
24
|
40
|
52
|
49
|
61
|
||
|
2024/01
|
52
|
49
|
41
|
63
|
74
|
85
|
79
|
102
|
88
|
61
|
62
|
64
|
74
|
71
|
102
|
61
|
38
|
18
|
15
|
19
|
44
|
41
|
46
|
51
|
57
|
46
|
45
|
55
|
61
|
63
|
51
|
|
2023/12
|
26
|
27
|
30
|
33
|
43
|
43
|
38
|
50
|
76
|
57
|
15
|
19
|
23
|
31
|
16
|
29
|
30
|
22
|
30
|
39
|
60
|
62
|
57
|
54
|
54
|
60
|
64
|
78
|
128
|
103
|
76
|
|
2023/11
|
28
|
32
|
43
|
45
|
39
|
21
|
19
|
27
|
20
|
21
|
12
|
21
|
25
|
25
|
24
|
25
|
29
|
37
|
38
|
27
|
29
|
47
|
55
|
50
|
48
|
45
|
38
|
42
|
48
|
41
|
|
|
2023/10
|
15
|
16
|
15
|
16
|
15
|
21
|
18
|
19
|
23
|
27
|
25
|
39
|
32
|
26
|
25
|
28
|
36
|
40
|
48
|
20
|
23
|
27
|
34
|
40
|
34
|
19
|
17
|
22
|
23
|
21
|
21
|
|
2023/09
|
36
|
33
|
34
|
33
|
31
|
29
|
30
|
27
|
28
|
28
|
32
|
28
|
30
|
40
|
38
|
38
|
36
|
28
|
27
|
37
|
32
|
16
|
14
|
14
|
17
|
21
|
26
|
32
|
36
|
32
|
|
|
2023/08
|
20
|
17
|
21
|
22
|
21
|
20
|
20
|
20
|
21
|
24
|
30
|
29
|
25
|
21
|
26
|
23
|
20
|
28
|
35
|
40
|
33
|
26
|
28
|
27
|
29
|
33
|
20
|
21
|
26
|
30
|
36
|
|
2023/07
|
40
|
28
|
23
|
18
|
17
|
20
|
19
|
20
|
17
|
19
|
22
|
22
|
21
|
20
|
22
|
29
|
30
|
32
|
29
|
18
|
18
|
18
|
20
|
27
|
22
|
19
|
24
|
22
|
23
|
25
|
22
|
|
2023/06
|
24
|
30
|
38
|
39
|
30
|
18
|
22
|
21
|
28
|
30
|
35
|
32
|
24
|
28
|
26
|
22
|
23
|
23
|
15
|
26
|
19
|
23
|
18
|
23
|
28
|
26
|
18
|
16
|
19
|
40
|
|
|
2023/05
|
39
|
44
|
35
|
33
|
23
|
18
|
23
|
30
|
32
|
22
|
25
|
26
|
32
|
40
|
48
|
45
|
27
|
32
|
38
|
26
|
22
|
20
|
24
|
28
|
31
|
33
|
22
|
22
|
22
|
26
|
20
|
|
2023/04
|
37
|
46
|
41
|
25
|
19
|
23
|
33
|
64
|
63
|
56
|
41
|
67
|
70
|
60
|
47
|
43
|
49
|
32
|
27
|
38
|
41
|
25
|
15
|
16
|
18
|
21
|
26
|
30
|
60
|
52
|
|
|
2023/03
|
71
|
56
|
59
|
42
|
44
|
48
|
53
|
35
|
30
|
32
|
36
|
68
|
41
|
42
|
52
|
74
|
19
|
20
|
16
|
13
|
13
|
15
|
23
|
18
|
40
|
40
|
41
|
38
|
33
|
30
|
33
|
|
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