Air Quality
Excellent
No health implications.
15
PM2.5
27
PM10
105
O3
0.6
CO
7
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
11 Feb
57
Good
Thu
12 Feb
58
Good
Fri
13 Feb
65
Good
Sat
14 Feb
60
Good
Sun
15 Feb
56
Good
Mon
16 Feb
75
Good
Tue
17 Feb
35
Excellent
Air quality in the last 12 months (Huidong)
|
2026/01
|
54
|
22
|
31
|
49
|
44
|
35
|
41
|
32
|
37
|
44
|
40
|
60
|
58
|
52
|
51
|
50
|
50
|
55
|
54
|
51
|
33
|
32
|
36
|
42
|
39
|
36
|
45
|
41
|
41
|
37
|
28
|
|
2025/12
|
33
|
35
|
50
|
63
|
56
|
52
|
52
|
49
|
52
|
52
|
50
|
46
|
40
|
36
|
40
|
51
|
45
|
46
|
39
|
28
|
44
|
65
|
42
|
42
|
26
|
35
|
42
|
44
|
42
|
42
|
46
|
|
2025/11
|
31
|
36
|
35
|
20
|
13
|
24
|
33
|
34
|
30
|
18
|
25
|
23
|
15
|
23
|
39
|
45
|
41
|
41
|
25
|
30
|
32
|
39
|
48
|
47
|
49
|
61
|
54
|
61
|
59
|
57
|
|
|
2025/10
|
21
|
17
|
19
|
22
|
16
|
15
|
25
|
27
|
29
|
29
|
23
|
18
|
15
|
17
|
21
|
30
|
31
|
33
|
33
|
19
|
11
|
10
|
24
|
35
|
33
|
40
|
56
|
47
|
40
|
31
|
28
|
|
2025/09
|
15
|
14
|
16
|
17
|
14
|
21
|
14
|
14
|
18
|
16
|
15
|
15
|
14
|
13
|
15
|
20
|
26
|
17
|
10
|
11
|
12
|
22
|
18
|
12
|
14
|
20
|
22
|
24
|
19
|
25
|
|
|
2025/08
|
24
|
19
|
19
|
11
|
10
|
18
|
20
|
25
|
25
|
13
|
14
|
22
|
27
|
18
|
13
|
22
|
15
|
10
|
11
|
16
|
18
|
23
|
19
|
16
|
15
|
18
|
23
|
21
|
19
|
18
|
15
|
|
2025/07
|
11
|
17
|
23
|
28
|
26
|
24
|
36
|
25
|
25
|
17
|
12
|
21
|
27
|
26
|
27
|
27
|
32
|
31
|
20
|
10
|
11
|
13
|
14
|
23
|
27
|
34
|
37
|
24
|
33
|
33
|
20
|
|
2025/06
|
27
|
26
|
18
|
16
|
24
|
25
|
23
|
20
|
20
|
20
|
15
|
14
|
13
|
23
|
24
|
20
|
11
|
15
|
10
|
9
|
13
|
16
|
15
|
14
|
14
|
12
|
11
|
14
|
12
|
12
|
|
|
2025/05
|
33
|
38
|
48
|
32
|
34
|
23
|
20
|
36
|
24
|
22
|
29
|
31
|
37
|
32
|
19
|
17
|
18
|
18
|
20
|
16
|
18
|
18
|
22
|
23
|
42
|
33
|
42
|
33
|
23
|
15
|
25
|
|
2025/04
|
19
|
24
|
36
|
50
|
24
|
42
|
51
|
54
|
44
|
32
|
29
|
37
|
170
|
143
|
108
|
83
|
59
|
50
|
27
|
28
|
24
|
27
|
28
|
21
|
16
|
18
|
28
|
30
|
34
|
46
|
|
|
2025/03
|
31
|
26
|
21
|
21
|
14
|
11
|
18
|
21
|
38
|
44
|
36
|
21
|
28
|
21
|
18
|
12
|
46
|
37
|
39
|
45
|
48
|
42
|
49
|
52
|
48
|
36
|
27
|
31
|
9
|
8
|
7
|
|
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
|
|||
|
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