Air Quality
Excellent
No health implications.
15
PM2.5
22
PM10
25
O3
0.4
CO
7
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Apr
49
Excellent
Thu
24 Apr
53
Good
Fri
25 Apr
54
Good
Sat
26 Apr
51
Good
Sun
27 Apr
52
Good
Mon
28 Apr
23
Excellent
Tue
29 Apr
16
Excellent
Air quality in the last 12 months (Kowloon)
|
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
|
|
|
2024/08
|
24
|
26
|
20
|
21
|
31
|
25
|
30
|
18
|
15
|
17
|
20
|
16
|
18
|
13
|
14
|
13
|
15
|
17
|
16
|
14
|
13
|
24
|
28
|
22
|
14
|
16
|
19
|
32
|
35
|
24
|
15
|
|
2024/07
|
22
|
23
|
12
|
11
|
12
|
11
|
11
|
16
|
11
|
10
|
11
|
9
|
11
|
12
|
12
|
12
|
12
|
13
|
15
|
16
|
15
|
12
|
12
|
19
|
27
|
24
|
18
|
10
|
11
|
8
|
13
|
|
2024/06
|
16
|
23
|
22
|
25
|
21
|
22
|
12
|
12
|
12
|
14
|
19
|
23
|
22
|
24
|
17
|
21
|
18
|
19
|
17
|
13
|
18
|
24
|
10
|
12
|
15
|
14
|
13
|
13
|
11
|
18
|
|
|
2024/05
|
22
|
25
|
29
|
21
|
14
|
19
|
35
|
32
|
34
|
29
|
29
|
34
|
31
|
23
|
28
|
37
|
35
|
27
|
29
|
15
|
15
|
22
|
11
|
11
|
16
|
17
|
20
|
18
|
28
|
17
|
16
|
|
2024/04
|
51
|
49
|
23
|
20
|
42
|
27
|
25
|
35
|
18
|
30
|
37
|
34
|
33
|
21
|
29
|
28
|
24
|
19
|
24
|
23
|
15
|
23
|
20
|
33
|
17
|
20
|
29
|
16
|
20
|
25
|
|
|
2024/03
|
18
|
21
|
32
|
36
|
35
|
45
|
36
|
34
|
50
|
30
|
25
|
16
|
58
|
59
|
60
|
60
|
49
|
34
|
21
|
50
|
49
|
53
|
42
|
25
|
25
|
51
|
27
|
36
|
47
|
35
|
27
|
|
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