Air Quality
Excellent
No health implications.
6
PM2.5
18
PM10
72
O3
0.3
CO
4
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Apr
74
Good
Thu
1 May
71
Good
Fri
2 May
72
Good
Sat
3 May
82
Good
Sun
4 May
78
Good
Mon
5 May
79
Good
Tue
6 May
31
Excellent
Air quality in the last 12 months (Huidong)
|
2025/02
|
45
|
46
|
21
|
38
|
48
|
43
|
29
|
33
|
41
|
33
|
37
|
36
|
40
|
48
|
38
|
43
|
33
|
39
|
47
|
36
|
39
|
36
|
38
|
36
|
33
|
33
|
35
|
33
|
|||
|
2025/01
|
52
|
48
|
51
|
51
|
44
|
54
|
41
|
31
|
38
|
42
|
22
|
42
|
46
|
42
|
44
|
62
|
55
|
56
|
57
|
60
|
53
|
50
|
58
|
42
|
33
|
34
|
43
|
47
|
58
|
51
|
36
|
|
2024/12
|
41
|
41
|
44
|
39
|
38
|
42
|
42
|
43
|
34
|
31
|
37
|
43
|
40
|
31
|
41
|
52
|
45
|
41
|
40
|
36
|
46
|
40
|
40
|
43
|
47
|
48
|
55
|
54
|
54
|
45
|
43
|
|
2024/11
|
29
|
26
|
35
|
28
|
29
|
43
|
31
|
17
|
21
|
33
|
33
|
32
|
33
|
41
|
45
|
43
|
43
|
39
|
42
|
41
|
37
|
26
|
29
|
28
|
33
|
30
|
31
|
34
|
31
|
32
|
|
|
2024/10
|
14
|
23
|
29
|
32
|
21
|
18
|
20
|
29
|
21
|
21
|
21
|
25
|
32
|
31
|
25
|
23
|
30
|
37
|
42
|
36
|
29
|
25
|
25
|
36
|
39
|
36
|
25
|
32
|
42
|
39
|
35
|
|
2024/09
|
29
|
18
|
25
|
28
|
22
|
26
|
32
|
26
|
24
|
18
|
24
|
25
|
28
|
32
|
36
|
25
|
24
|
27
|
37
|
39
|
35
|
27
|
24
|
40
|
35
|
33
|
38
|
19
|
21
|
25
|
|
|
2024/08
|
38
|
40
|
33
|
28
|
25
|
23
|
21
|
18
|
19
|
24
|
46
|
41
|
43
|
46
|
45
|
39
|
37
|
31
|
35
|
38
|
39
|
41
|
30
|
36
|
34
|
29
|
26
|
37
|
40
|
42
|
35
|
|
2024/07
|
21
|
22
|
20
|
13
|
12
|
19
|
15
|
16
|
20
|
23
|
17
|
20
|
21
|
24
|
17
|
21
|
23
|
28
|
28
|
24
|
25
|
30
|
33
|
34
|
26
|
33
|
40
|
31
|
20
|
17
|
32
|
|
2024/06
|
32
|
36
|
25
|
23
|
17
|
24
|
18
|
18
|
13
|
25
|
22
|
20
|
25
|
21
|
29
|
34
|
21
|
24
|
24
|
30
|
32
|
28
|
23
|
20
|
24
|
28
|
25
|
16
|
20
|
25
|
|
|
2024/05
|
43
|
43
|
33
|
36
|
47
|
43
|
37
|
34
|
28
|
32
|
27
|
19
|
22
|
32
|
21
|
29
|
37
|
28
|
22
|
24
|
28
|
35
|
29
|
29
|
22
|
15
|
19
|
23
|
18
|
21
|
20
|
|
2024/04
|
23
|
34
|
41
|
41
|
41
|
52
|
40
|
34
|
40
|
38
|
45
|
47
|
36
|
43
|
46
|
47
|
53
|
38
|
38
|
36
|
25
|
37
|
42
|
36
|
33
|
40
|
41
|
46
|
33
|
40
|
|
|
2024/03
|
30
|
35
|
26
|
26
|
24
|
27
|
27
|
28
|
28
|
34
|
30
|
54
|
49
|
42
|
45
|
43
|
46
|
37
|
46
|
55
|
52
|
34
|
20
|
25
|
33
|
35
|
38
|
32
|
37
|
45
|
35
|
|
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