Air Quality
Excellent
No health implications.
18
PM2.5
28
PM10
25
O3
0.6
CO
6
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Apr
57
Good
Sat
18 Apr
57
Good
Sun
19 Apr
70
Good
Mon
20 Apr
57
Good
Tue
21 Apr
59
Good
Wed
22 Apr
59
Good
Thu
23 Apr
34
Excellent
Air quality in the last 12 months (Chaonan)
|
2026/03
|
27
|
60
|
27
|
37
|
41
|
30
|
49
|
38
|
35
|
46
|
45
|
49
|
47
|
48
|
44
|
46
|
42
|
43
|
49
|
37
|
42
|
45
|
53
|
39
|
61
|
36
|
49
|
36
|
41
|
38
|
41
|
|
2026/02
|
32
|
36
|
48
|
54
|
59
|
56
|
30
|
43
|
42
|
44
|
61
|
47
|
51
|
48
|
44
|
49
|
39
|
42
|
43
|
65
|
70
|
80
|
62
|
86
|
73
|
27
|
50
|
12
|
|||
|
2026/01
|
39
|
28
|
38
|
54
|
63
|
34
|
48
|
56
|
57
|
70
|
71
|
66
|
79
|
64
|
58
|
62
|
66
|
62
|
53
|
33
|
48
|
47
|
52
|
50
|
36
|
48
|
56
|
36
|
33
|
56
|
42
|
|
2025/12
|
50
|
39
|
46
|
52
|
42
|
46
|
64
|
79
|
51
|
50
|
54
|
48
|
50
|
42
|
52
|
60
|
73
|
52
|
62
|
51
|
79
|
39
|
43
|
44
|
27
|
33
|
40
|
45
|
53
|
55
|
40
|
|
2025/11
|
32
|
44
|
49
|
33
|
26
|
36
|
32
|
38
|
50
|
31
|
34
|
21
|
16
|
30
|
46
|
46
|
45
|
43
|
29
|
58
|
50
|
55
|
69
|
66
|
45
|
66
|
67
|
70
|
90
|
82
|
|
|
2025/10
|
39
|
25
|
32
|
29
|
21
|
23
|
46
|
33
|
32
|
25
|
28
|
27
|
13
|
29
|
28
|
31
|
37
|
35
|
34
|
23
|
22
|
18
|
29
|
40
|
38
|
52
|
50
|
45
|
28
|
46
|
46
|
|
2025/09
|
26
|
27
|
30
|
25
|
26
|
32
|
11
|
15
|
15
|
20
|
23
|
29
|
21
|
19
|
19
|
28
|
23
|
25
|
11
|
14
|
17
|
33
|
23
|
27
|
25
|
31
|
25
|
28
|
39
|
36
|
|
|
2025/08
|
24
|
17
|
16
|
11
|
10
|
28
|
39
|
40
|
24
|
12
|
10
|
22
|
34
|
9
|
24
|
27
|
19
|
13
|
16
|
36
|
28
|
46
|
35
|
17
|
29
|
23
|
20
|
25
|
24
|
18
|
23
|
|
2025/07
|
17
|
24
|
26
|
29
|
10
|
22
|
38
|
30
|
24
|
17
|
12
|
35
|
37
|
34
|
30
|
29
|
34
|
25
|
20
|
21
|
22
|
15
|
25
|
31
|
31
|
32
|
35
|
22
|
22
|
33
|
20
|
|
2025/06
|
45
|
17
|
22
|
22
|
35
|
29
|
39
|
21
|
26
|
23
|
17
|
20
|
13
|
28
|
26
|
17
|
14
|
26
|
13
|
12
|
11
|
15
|
19
|
17
|
13
|
11
|
17
|
14
|
11
|
13
|
|
|
2025/05
|
49
|
66
|
53
|
45
|
36
|
28
|
36
|
58
|
48
|
34
|
30
|
44
|
42
|
41
|
26
|
20
|
19
|
18
|
23
|
17
|
18
|
22
|
19
|
26
|
27
|
41
|
32
|
27
|
21
|
21
|
37
|
|
2025/04
|
25
|
47
|
62
|
63
|
39
|
61
|
65
|
73
|
53
|
39
|
53
|
39
|
154
|
122
|
128
|
97
|
73
|
63
|
35
|
41
|
29
|
31
|
35
|
32
|
18
|
22
|
46
|
47
|
38
|
59
|
|
|
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