Air Quality
Excellent
No health implications.
10
PM2.5
15
PM10
102
O3
0.7
CO
5
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 Sep
66
Good
Wed
23 Sep
62
Good
Thu
24 Sep
49
Excellent
Fri
25 Sep
83
Good
Sat
26 Sep
54
Good
Sun
27 Sep
53
Good
Mon
28 Sep
25
Excellent
Air quality in the last 12 months (Hong Kong)
|
2026/08
|
11
|
13
|
11
|
15
|
19
|
24
|
28
|
38
|
35
|
41
|
49
|
35
|
22
|
19
|
17
|
27
|
29
|
26
|
19
|
18
|
14
|
16
|
20
|
22
|
21
|
21
|
19
|
22
|
25
|
30
|
18
|
|
2026/07
|
14
|
18
|
18
|
17
|
19
|
19
|
15
|
16
|
16
|
16
|
30
|
25
|
18
|
13
|
15
|
14
|
15
|
22
|
28
|
28
|
30
|
32
|
34
|
33
|
39
|
18
|
16
|
14
|
15
|
17
|
11
|
|
2026/06
|
39
|
29
|
24
|
21
|
24
|
21
|
20
|
19
|
18
|
25
|
26
|
33
|
20
|
27
|
18
|
15
|
14
|
14
|
18
|
18
|
16
|
17
|
21
|
24
|
26
|
16
|
21
|
17
|
18
|
16
|
|
|
2026/05
|
27
|
34
|
24
|
26
|
29
|
26
|
26
|
26
|
31
|
33
|
35
|
28
|
17
|
17
|
19
|
27
|
28
|
34
|
22
|
19
|
18
|
19
|
22
|
22
|
20
|
21
|
20
|
22
|
29
|
37
|
40
|
|
2026/04
|
36
|
34
|
41
|
30
|
24
|
29
|
32
|
41
|
33
|
24
|
28
|
21
|
19
|
15
|
17
|
18
|
23
|
69
|
58
|
43
|
21
|
24
|
26
|
14
|
24
|
33
|
34
|
27
|
22
|
28
|
|
|
2026/03
|
23
|
24
|
14
|
9
|
17
|
25
|
39
|
47
|
40
|
26
|
29
|
41
|
44
|
38
|
38
|
35
|
29
|
25
|
21
|
33
|
36
|
33
|
31
|
26
|
28
|
27
|
38
|
29
|
33
|
24
|
29
|
|
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
|
|
|
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