Air Quality
Excellent
No health implications.
6
PM2.5
10
PM10
91
O3
0.6
CO
4
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Apr
50
Excellent
Sat
26 Apr
57
Good
Sun
27 Apr
86
Good
Mon
28 Apr
55
Good
Tue
29 Apr
55
Good
Wed
30 Apr
45
Excellent
Thu
1 May
30
Excellent
Air quality in the last 12 months (Chaonan)
|
2025/02
|
78
|
29
|
18
|
30
|
57
|
49
|
34
|
45
|
53
|
49
|
59
|
78
|
66
|
53
|
58
|
73
|
55
|
69
|
38
|
43
|
31
|
32
|
34
|
35
|
57
|
59
|
63
|
83
|
|||
|
2025/01
|
59
|
63
|
63
|
54
|
71
|
74
|
60
|
63
|
59
|
62
|
49
|
47
|
59
|
58
|
63
|
92
|
61
|
53
|
93
|
58
|
62
|
63
|
69
|
36
|
35
|
37
|
31
|
54
|
70
|
60
|
72
|
|
2024/12
|
71
|
76
|
70
|
42
|
48
|
49
|
53
|
43
|
44
|
36
|
50
|
38
|
37
|
59
|
55
|
56
|
62
|
52
|
56
|
50
|
54
|
60
|
61
|
42
|
58
|
52
|
59
|
86
|
67
|
74
|
87
|
|
2024/11
|
28
|
20
|
33
|
45
|
44
|
45
|
35
|
39
|
33
|
33
|
43
|
37
|
24
|
29
|
46
|
36
|
29
|
25
|
18
|
12
|
16
|
38
|
41
|
35
|
39
|
20
|
36
|
38
|
37
|
63
|
|
|
2024/10
|
28
|
25
|
34
|
28
|
30
|
38
|
35
|
32
|
32
|
44
|
46
|
43
|
35
|
40
|
33
|
26
|
32
|
45
|
49
|
18
|
30
|
42
|
31
|
38
|
46
|
47
|
51
|
26
|
32
|
48
|
38
|
|
2024/09
|
30
|
44
|
39
|
30
|
20
|
13
|
18
|
16
|
24
|
41
|
52
|
46
|
34
|
35
|
32
|
25
|
34
|
25
|
33
|
20
|
14
|
22
|
14
|
19
|
32
|
31
|
37
|
20
|
33
|
37
|
|
|
2024/08
|
28
|
30
|
33
|
37
|
47
|
43
|
48
|
40
|
35
|
25
|
35
|
24
|
25
|
26
|
31
|
26
|
15
|
20
|
12
|
11
|
14
|
31
|
37
|
32
|
45
|
40
|
36
|
38
|
49
|
26
|
18
|
|
2024/07
|
23
|
20
|
15
|
20
|
16
|
13
|
12
|
19
|
24
|
24
|
14
|
14
|
16
|
16
|
16
|
16
|
22
|
22
|
16
|
21
|
18
|
20
|
32
|
33
|
36
|
10
|
13
|
18
|
22
|
19
|
15
|
|
2024/06
|
14
|
13
|
18
|
29
|
29
|
44
|
15
|
21
|
23
|
15
|
14
|
22
|
21
|
26
|
24
|
17
|
18
|
18
|
18
|
16
|
26
|
27
|
15
|
11
|
14
|
16
|
17
|
16
|
13
|
17
|
|
|
2024/05
|
47
|
24
|
32
|
40
|
26
|
41
|
44
|
55
|
44
|
38
|
53
|
52
|
29
|
32
|
57
|
65
|
54
|
63
|
49
|
30
|
23
|
14
|
14
|
16
|
26
|
26
|
22
|
25
|
25
|
35
|
31
|
|
2024/04
|
44
|
48
|
22
|
42
|
47
|
33
|
35
|
55
|
19
|
47
|
50
|
56
|
66
|
39
|
39
|
36
|
24
|
29
|
48
|
47
|
29
|
38
|
25
|
38
|
35
|
22
|
29
|
19
|
33
|
20
|
|
|
2024/03
|
20
|
26
|
43
|
51
|
103
|
102
|
32
|
58
|
63
|
51
|
50
|
34
|
75
|
74
|
74
|
94
|
123
|
53
|
64
|
60
|
62
|
69
|
88
|
41
|
40
|
50
|
48
|
60
|
77
|
74
|
27
|
|
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