Air Quality
Excellent
No health implications.
7
PM2.5
15
PM10
48
O3
0.5
CO
5
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Apr
35
Excellent
Fri
26 Apr
35
Excellent
Sat
27 Apr
33
Excellent
Sun
28 Apr
34
Excellent
Mon
29 Apr
38
Excellent
Tue
30 Apr
38
Excellent
Wed
1 May
32
Excellent
Air quality in the last 12 months (Hong Kong)
|
2024/02
|
26
|
24
|
23
|
23
|
26
|
23
|
18
|
13
|
17
|
62
|
51
|
34
|
46
|
39
|
34
|
36
|
28
|
34
|
26
|
19
|
21
|
22
|
37
|
35
|
28
|
45
|
37
|
43
|
49
|
||
|
2024/01
|
58
|
53
|
46
|
38
|
39
|
58
|
48
|
52
|
48
|
36
|
41
|
53
|
44
|
30
|
34
|
41
|
35
|
26
|
23
|
36
|
35
|
35
|
27
|
37
|
42
|
50
|
54
|
35
|
45
|
52
|
31
|
|
2023/12
|
50
|
51
|
49
|
57
|
49
|
42
|
27
|
35
|
42
|
34
|
19
|
39
|
32
|
28
|
23
|
21
|
34
|
47
|
37
|
29
|
30
|
53
|
49
|
43
|
43
|
49
|
51
|
55
|
36
|
51
|
64
|
|
2023/11
|
37
|
31
|
32
|
28
|
25
|
31
|
40
|
38
|
39
|
29
|
28
|
22
|
24
|
36
|
34
|
34
|
52
|
60
|
55
|
50
|
38
|
32
|
52
|
48
|
51
|
44
|
54
|
49
|
51
|
54
|
|
|
2023/10
|
26
|
34
|
36
|
47
|
30
|
32
|
19
|
22
|
17
|
18
|
26
|
27
|
26
|
35
|
43
|
46
|
42
|
42
|
33
|
29
|
23
|
32
|
40
|
32
|
30
|
27
|
22
|
31
|
37
|
42
|
39
|
|
2023/09
|
19
|
26
|
22
|
39
|
34
|
37
|
28
|
19
|
19
|
19
|
14
|
13
|
14
|
11
|
14
|
16
|
15
|
14
|
14
|
13
|
21
|
26
|
20
|
18
|
22
|
24
|
27
|
24
|
22
|
25
|
|
|
2023/08
|
17
|
23
|
21
|
19
|
25
|
33
|
29
|
27
|
26
|
25
|
23
|
19
|
25
|
30
|
30
|
33
|
38
|
26
|
26
|
24
|
20
|
18
|
21
|
15
|
17
|
19
|
17
|
17
|
21
|
28
|
24
|
|
2023/07
|
12
|
11
|
15
|
17
|
20
|
18
|
22
|
19
|
14
|
13
|
14
|
14
|
15
|
19
|
36
|
22
|
27
|
33
|
19
|
17
|
16
|
14
|
13
|
14
|
15
|
49
|
36
|
32
|
26
|
23
|
15
|
|
2023/06
|
37
|
34
|
23
|
17
|
19
|
17
|
18
|
14
|
18
|
15
|
22
|
20
|
21
|
23
|
23
|
19
|
13
|
15
|
18
|
19
|
18
|
17
|
17
|
16
|
18
|
13
|
14
|
15
|
16
|
17
|
|
|
2023/05
|
38
|
42
|
32
|
26
|
20
|
19
|
23
|
24
|
31
|
40
|
37
|
41
|
23
|
31
|
41
|
28
|
19
|
38
|
44
|
33
|
21
|
21
|
31
|
56
|
47
|
28
|
27
|
25
|
32
|
54
|
53
|
|
2023/04
|
30
|
27
|
31
|
35
|
28
|
24
|
24
|
40
|
50
|
35
|
36
|
29
|
47
|
61
|
50
|
46
|
36
|
29
|
29
|
28
|
31
|
38
|
53
|
46
|
33
|
23
|
34
|
35
|
32
|
34
|
|
|
2023/03
|
51
|
59
|
50
|
45
|
39
|
40
|
34
|
32
|
40
|
43
|
39
|
40
|
70
|
53
|
43
|
43
|
33
|
35
|
29
|
31
|
24
|
19
|
25
|
34
|
28
|
17
|
18
|
28
|
37
|
32
|
28
|
|
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