Air Quality
Excellent
No health implications.
14
PM2.5
24
PM10
66
O3
0.6
CO
5
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Feb
39
Excellent
Fri
10 Feb
38
Excellent
Sat
11 Feb
48
Excellent
Sun
12 Feb
48
Excellent
Mon
13 Feb
42
Excellent
Tue
14 Feb
47
Excellent
Wed
15 Feb
40
Excellent
Air quality in the last 12 months (Huidong)
|
2023/01
|
52
|
44
|
45
|
48
|
50
|
39
|
44
|
54
|
37
|
13
|
22
|
30
|
26
|
18
|
16
|
18
|
33
|
38
|
39
|
44
|
50
|
88
|
70
|
44
|
62
|
56
|
55
|
61
|
53
|
43
|
47
|
|
2022/12
|
11
|
12
|
22
|
18
|
16
|
19
|
22
|
31
|
33
|
35
|
48
|
57
|
53
|
21
|
21
|
16
|
43
|
34
|
37
|
49
|
39
|
43
|
46
|
36
|
43
|
51
|
52
|
59
|
101
|
70
|
42
|
|
2022/11
|
37
|
17
|
17
|
23
|
18
|
19
|
17
|
20
|
32
|
42
|
44
|
42
|
47
|
46
|
51
|
44
|
45
|
46
|
43
|
36
|
44
|
33
|
14
|
14
|
19
|
15
|
34
|
33
|
26
|
20
|
|
|
2022/10
|
21
|
23
|
23
|
37
|
37
|
30
|
34
|
33
|
41
|
37
|
46
|
44
|
41
|
43
|
44
|
51
|
52
|
48
|
39
|
47
|
48
|
44
|
45
|
53
|
48
|
47
|
41
|
48
|
45
|
37
|
50
|
|
2022/09
|
33
|
31
|
48
|
39
|
44
|
56
|
35
|
39
|
49
|
57
|
61
|
54
|
56
|
54
|
54
|
65
|
73
|
65
|
53
|
56
|
49
|
49
|
46
|
49
|
54
|
46
|
38
|
30
|
32
|
23
|
|
|
2022/08
|
40
|
28
|
23
|
16
|
17
|
18
|
20
|
18
|
11
|
15
|
14
|
18
|
22
|
27
|
23
|
18
|
16
|
19
|
15
|
16
|
19
|
33
|
48
|
30
|
17
|
20
|
37
|
42
|
29
|
33
|
35
|
|
2022/07
|
15
|
19
|
26
|
26
|
25
|
22
|
17
|
21
|
19
|
20
|
22
|
22
|
21
|
26
|
25
|
30
|
28
|
25
|
23
|
19
|
20
|
42
|
43
|
43
|
51
|
29
|
29
|
52
|
51
|
46
|
79
|
|
2022/06
|
20
|
21
|
20
|
24
|
22
|
21
|
15
|
14
|
18
|
16
|
17
|
20
|
22
|
16
|
18
|
16
|
15
|
16
|
19
|
19
|
22
|
19
|
22
|
25
|
24
|
18
|
19
|
21
|
19
|
14
|
|
|
2022/05
|
17
|
19
|
31
|
41
|
47
|
37
|
37
|
38
|
40
|
21
|
15
|
13
|
15
|
16
|
21
|
22
|
26
|
41
|
45
|
43
|
42
|
32
|
28
|
23
|
20
|
20
|
18
|
19
|
17
|
17
|
17
|
|
2022/04
|
23
|
21
|
31
|
50
|
52
|
44
|
42
|
49
|
45
|
48
|
40
|
28
|
24
|
28
|
33
|
40
|
37
|
27
|
14
|
28
|
49
|
34
|
32
|
25
|
19
|
22
|
27
|
27
|
29
|
27
|
|
|
2022/03
|
43
|
49
|
53
|
54
|
48
|
45
|
34
|
31
|
33
|
40
|
40
|
37
|
39
|
35
|
33
|
32
|
30
|
37
|
38
|
32
|
38
|
34
|
15
|
12
|
22
|
27
|
19
|
15
|
23
|
33
|
33
|
|
2022/02
|
20
|
13
|
12
|
17
|
23
|
28
|
27
|
12
|
14
|
15
|
21
|
25
|
19
|
16
|
27
|
39
|
36
|
25
|
12
|
15
|
16
|
15
|
17
|
22
|
29
|
40
|
42
|
40
|
|||
|
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