Air Quality
Excellent
No health implications.
11
PM2.5
12
PM10
32
O3
1.0
CO
6
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Jun
53
Good
Fri
19 Jun
55
Good
Sat
20 Jun
53
Good
Sun
21 Jun
55
Good
Mon
22 Jun
54
Good
Tue
23 Jun
57
Good
Wed
24 Jun
42
Excellent
Air quality in the last 12 months (Chaonan)
|
2026/05
|
43
|
53
|
42
|
26
|
29
|
41
|
42
|
47
|
35
|
41
|
48
|
68
|
43
|
16
|
23
|
26
|
30
|
39
|
45
|
26
|
22
|
26
|
25
|
27
|
30
|
26
|
28
|
36
|
35
|
47
|
52
|
|
2026/04
|
33
|
32
|
58
|
44
|
28
|
32
|
36
|
41
|
50
|
25
|
28
|
27
|
22
|
21
|
28
|
32
|
32
|
53
|
47
|
40
|
32
|
29
|
27
|
21
|
29
|
48
|
49
|
40
|
32
|
21
|
|
|
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
|
|
|
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