Air Quality
Excellent
No health implications.
13
PM2.5
23
PM10
106
O3
0.4
CO
5
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Mar
51
Good
Sun
22 Mar
49
Excellent
Mon
23 Mar
55
Good
Tue
24 Mar
49
Excellent
Wed
25 Mar
52
Good
Thu
26 Mar
49
Excellent
Fri
27 Mar
23
Excellent
Hong Kong Air quality rank
Air quality in the last 12 months (Hong Kong)
|
2026/02
|
23
|
33
|
38
|
44
|
30
|
19
|
33
|
26
|
37
|
31
|
27
|
41
|
38
|
25
|
24
|
22
|
31
|
33
|
40
|
44
|
37
|
33
|
43
|
60
|
40
|
21
|
29
|
14
|
|||
|
2026/01
|
39
|
23
|
28
|
39
|
45
|
37
|
42
|
30
|
36
|
44
|
36
|
60
|
58
|
28
|
44
|
36
|
32
|
33
|
38
|
31
|
44
|
42
|
43
|
58
|
22
|
17
|
52
|
42
|
29
|
32
|
31
|
|
2025/12
|
37
|
28
|
44
|
65
|
49
|
41
|
47
|
45
|
43
|
45
|
44
|
42
|
42
|
37
|
39
|
50
|
46
|
41
|
38
|
20
|
38
|
45
|
29
|
32
|
23
|
31
|
43
|
36
|
31
|
53
|
30
|
|
2025/11
|
30
|
38
|
40
|
28
|
17
|
23
|
25
|
28
|
30
|
20
|
21
|
25
|
16
|
24
|
40
|
38
|
36
|
43
|
24
|
31
|
34
|
39
|
58
|
52
|
45
|
57
|
49
|
55
|
56
|
51
|
|
|
2025/10
|
13
|
11
|
9
|
20
|
23
|
15
|
16
|
18
|
25
|
21
|
19
|
13
|
12
|
12
|
13
|
18
|
27
|
27
|
25
|
22
|
13
|
11
|
21
|
32
|
34
|
40
|
52
|
48
|
31
|
34
|
35
|
|
2025/09
|
9
|
10
|
12
|
11
|
10
|
15
|
14
|
18
|
19
|
14
|
10
|
11
|
9
|
9
|
10
|
16
|
17
|
15
|
15
|
14
|
9
|
21
|
19
|
20
|
21
|
21
|
18
|
22
|
14
|
16
|
|
|
2025/08
|
23
|
26
|
36
|
32
|
18
|
17
|
20
|
26
|
20
|
11
|
13
|
15
|
19
|
16
|
14
|
18
|
16
|
12
|
16
|
17
|
14
|
12
|
19
|
20
|
13
|
18
|
13
|
23
|
17
|
17
|
9
|
|
2025/07
|
11
|
13
|
18
|
19
|
22
|
15
|
31
|
13
|
19
|
17
|
17
|
20
|
30
|
23
|
21
|
23
|
24
|
25
|
29
|
14
|
17
|
21
|
15
|
27
|
32
|
38
|
25
|
28
|
23
|
31
|
23
|
|
2025/06
|
27
|
23
|
21
|
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
|
13
|
11
|
|
|
2025/05
|
34
|
37
|
44
|
23
|
24
|
19
|
17
|
46
|
26
|
31
|
28
|
24
|
32
|
24
|
17
|
12
|
11
|
12
|
13
|
12
|
17
|
16
|
18
|
20
|
37
|
26
|
31
|
28
|
19
|
12
|
23
|
|
2025/04
|
23
|
19
|
28
|
40
|
30
|
43
|
43
|
50
|
38
|
25
|
21
|
24
|
150
|
154
|
106
|
73
|
58
|
46
|
26
|
23
|
22
|
23
|
21
|
18
|
23
|
15
|
27
|
33
|
25
|
40
|
|
|
2025/03
|
32
|
32
|
16
|
22
|
21
|
10
|
18
|
30
|
29
|
36
|
35
|
23
|
28
|
27
|
15
|
11
|
41
|
37
|
38
|
41
|
43
|
39
|
38
|
37
|
36
|
27
|
25
|
29
|
12
|
9
|
10
|
|
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