Air Quality
Excellent
No health implications.
7
PM2.5
18
PM10
41
O3
0.5
CO
6
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 Jul
59
Good
Wed
2 Jul
56
Good
Thu
3 Jul
72
Good
Fri
4 Jul
74
Good
Sat
5 Jul
58
Good
Sun
6 Jul
51
Good
Mon
7 Jul
28
Excellent
Air quality in the last 12 months (Chaonan)
|
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
|
|
|
2025/03
|
74
|
44
|
39
|
32
|
20
|
22
|
30
|
37
|
44
|
50
|
59
|
66
|
56
|
30
|
33
|
13
|
52
|
55
|
53
|
59
|
66
|
65
|
66
|
72
|
62
|
44
|
34
|
46
|
46
|
12
|
14
|
|
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
|
|
|
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