Air Quality
Excellent
No health implications.
5
PM2.5
11
PM10
52
O3
0.6
CO
4
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 Jul
57
Good
Wed
23 Jul
57
Good
Thu
24 Jul
58
Good
Fri
25 Jul
59
Good
Sat
26 Jul
60
Good
Sun
27 Jul
37
Excellent
Mon
28 Jul
29
Excellent
Air quality in the last 12 months (Chaonan)
|
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
|
|
|
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
|
|
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