Air Quality
Excellent
No health implications.
3
PM2.5
6
PM10
36
O3
0.4
CO
8
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Oct
42
Excellent
Fri
24 Oct
44
Excellent
Sat
25 Oct
55
Good
Sun
26 Oct
54
Good
Mon
27 Oct
46
Excellent
Tue
28 Oct
45
Excellent
Wed
29 Oct
25
Excellent
Air quality in the last 12 months (Kowloon)
|
2025/08
|
23
|
26
|
36
|
31
|
18
|
17
|
20
|
26
|
21
|
11
|
12
|
15
|
19
|
16
|
14
|
18
|
16
|
12
|
15
|
17
|
14
|
12
|
19
|
20
|
13
|
18
|
13
|
24
|
17
|
17
|
9
|
|
2025/07
|
12
|
13
|
18
|
19
|
22
|
15
|
31
|
13
|
19
|
17
|
17
|
21
|
30
|
23
|
21
|
23
|
24
|
24
|
29
|
14
|
17
|
21
|
15
|
27
|
32
|
38
|
25
|
28
|
23
|
31
|
23
|
|
2025/06
|
27
|
23
|
20
|
14
|
19
|
17
|
14
|
10
|
11
|
10
|
13
|
13
|
12
|
26
|
30
|
24
|
18
|
13
|
11
|
11
|
12
|
14
|
11
|
10
|
9
|
12
|
13
|
11
|
12
|
11
|
|
|
2025/05
|
34
|
37
|
44
|
23
|
25
|
19
|
17
|
46
|
26
|
30
|
28
|
24
|
32
|
24
|
17
|
12
|
11
|
12
|
13
|
12
|
17
|
16
|
18
|
20
|
37
|
26
|
31
|
28
|
19
|
12
|
23
|
|
2025/04
|
22
|
19
|
27
|
40
|
30
|
42
|
43
|
50
|
38
|
24
|
21
|
24
|
150
|
153
|
106
|
73
|
58
|
46
|
26
|
23
|
22
|
23
|
21
|
18
|
22
|
15
|
28
|
33
|
25
|
40
|
|
|
2025/03
|
32
|
32
|
16
|
22
|
21
|
10
|
18
|
30
|
28
|
36
|
35
|
22
|
28
|
26
|
15
|
11
|
40
|
37
|
37
|
41
|
43
|
39
|
37
|
37
|
36
|
27
|
25
|
28
|
12
|
9
|
10
|
|
2025/02
|
21
|
17
|
13
|
13
|
36
|
33
|
25
|
40
|
45
|
42
|
29
|
20
|
39
|
40
|
25
|
48
|
40
|
62
|
37
|
35
|
38
|
31
|
19
|
21
|
48
|
49
|
28
|
27
|
|||
|
2025/01
|
52
|
61
|
50
|
45
|
51
|
56
|
45
|
58
|
56
|
46
|
44
|
28
|
34
|
37
|
50
|
62
|
52
|
53
|
46
|
46
|
34
|
48
|
41
|
20
|
24
|
21
|
18
|
33
|
52
|
37
|
30
|
|
2024/12
|
35
|
40
|
36
|
28
|
49
|
58
|
55
|
35
|
28
|
28
|
43
|
35
|
37
|
54
|
47
|
43
|
47
|
47
|
52
|
58
|
47
|
52
|
61
|
58
|
56
|
42
|
62
|
59
|
63
|
56
|
61
|
|
2024/11
|
33
|
28
|
39
|
47
|
43
|
53
|
41
|
38
|
41
|
36
|
38
|
39
|
28
|
13
|
12
|
22
|
17
|
30
|
15
|
8
|
14
|
25
|
29
|
36
|
37
|
18
|
30
|
33
|
31
|
35
|
|
|
2024/10
|
28
|
29
|
39
|
36
|
41
|
38
|
39
|
41
|
38
|
31
|
27
|
38
|
25
|
25
|
24
|
23
|
25
|
27
|
37
|
19
|
37
|
25
|
28
|
40
|
45
|
44
|
45
|
22
|
28
|
39
|
41
|
|
2024/09
|
13
|
17
|
34
|
27
|
22
|
13
|
22
|
15
|
12
|
22
|
27
|
20
|
20
|
20
|
31
|
15
|
20
|
21
|
30
|
22
|
15
|
15
|
12
|
11
|
23
|
27
|
26
|
33
|
23
|
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