Air Quality
Excellent
No health implications.
15
PM2.5
30
PM10
80
O3
0.5
CO
8
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 May
64
Good
Mon
5 May
62
Good
Tue
6 May
62
Good
Wed
7 May
66
Good
Thu
8 May
63
Good
Fri
9 May
58
Good
Sat
10 May
32
Excellent
Air quality in the last 12 months (Huidong)
|
2025/02
|
24
|
30
|
11
|
21
|
39
|
39
|
21
|
53
|
38
|
38
|
32
|
22
|
43
|
44
|
37
|
41
|
43
|
53
|
32
|
37
|
30
|
32
|
14
|
23
|
41
|
42
|
42
|
30
|
|||
|
2025/01
|
64
|
63
|
55
|
57
|
54
|
67
|
62
|
64
|
58
|
46
|
42
|
36
|
46
|
52
|
50
|
63
|
50
|
53
|
51
|
50
|
49
|
47
|
43
|
34
|
26
|
22
|
25
|
43
|
93
|
52
|
37
|
|
2024/12
|
48
|
48
|
46
|
46
|
51
|
62
|
54
|
33
|
38
|
41
|
46
|
25
|
32
|
59
|
44
|
39
|
48
|
45
|
50
|
62
|
47
|
53
|
64
|
62
|
54
|
48
|
64
|
73
|
74
|
65
|
59
|
|
2024/11
|
25
|
22
|
41
|
41
|
40
|
55
|
40
|
33
|
38
|
43
|
46
|
37
|
34
|
13
|
21
|
16
|
20
|
25
|
14
|
9
|
17
|
22
|
31
|
36
|
24
|
15
|
28
|
31
|
31
|
41
|
|
|
2024/10
|
29
|
29
|
36
|
30
|
28
|
30
|
30
|
41
|
33
|
30
|
40
|
46
|
37
|
32
|
34
|
30
|
27
|
30
|
39
|
32
|
35
|
31
|
26
|
34
|
38
|
39
|
41
|
21
|
22
|
33
|
39
|
|
2024/09
|
19
|
25
|
29
|
25
|
20
|
9
|
16
|
12
|
14
|
20
|
35
|
36
|
39
|
26
|
17
|
19
|
23
|
20
|
30
|
22
|
14
|
14
|
10
|
12
|
19
|
31
|
46
|
21
|
25
|
29
|
|
|
2024/08
|
28
|
26
|
29
|
33
|
41
|
29
|
31
|
34
|
26
|
26
|
26
|
21
|
18
|
23
|
23
|
23
|
12
|
17
|
18
|
20
|
11
|
19
|
25
|
33
|
29
|
31
|
34
|
39
|
30
|
23
|
17
|
|
2024/07
|
20
|
19
|
12
|
14
|
13
|
14
|
12
|
19
|
17
|
14
|
11
|
12
|
12
|
18
|
13
|
11
|
14
|
18
|
17
|
17
|
15
|
15
|
18
|
36
|
49
|
18
|
14
|
7
|
10
|
11
|
12
|
|
2024/06
|
12
|
18
|
15
|
21
|
23
|
17
|
15
|
14
|
11
|
12
|
17
|
25
|
24
|
23
|
17
|
18
|
19
|
18
|
19
|
17
|
17
|
24
|
14
|
13
|
14
|
17
|
15
|
16
|
13
|
16
|
|
|
2024/05
|
14
|
22
|
25
|
22
|
14
|
29
|
22
|
33
|
38
|
41
|
31
|
26
|
27
|
29
|
35
|
47
|
44
|
35
|
33
|
13
|
10
|
14
|
15
|
11
|
12
|
18
|
19
|
14
|
24
|
22
|
12
|
|
2024/04
|
36
|
41
|
25
|
25
|
37
|
23
|
19
|
28
|
17
|
30
|
39
|
47
|
46
|
27
|
28
|
33
|
24
|
27
|
28
|
24
|
16
|
24
|
22
|
22
|
15
|
16
|
22
|
10
|
19
|
17
|
|
|
2024/03
|
16
|
19
|
28
|
40
|
45
|
33
|
28
|
34
|
56
|
18
|
17
|
21
|
55
|
54
|
55
|
56
|
44
|
37
|
25
|
58
|
53
|
55
|
43
|
27
|
28
|
42
|
33
|
39
|
50
|
36
|
24
|
|
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