Air Quality
Excellent
No health implications.
13
PM2.5
22
PM10
35
O3
0.6
CO
6
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
24 Jul
77
Good
Sat
25 Jul
94
Good
Sun
26 Jul
51
Good
Mon
27 Jul
49
Excellent
Tue
28 Jul
45
Excellent
Wed
29 Jul
42
Excellent
Thu
30 Jul
26
Excellent
Air quality in the last 12 months (Hong Kong)
|
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
|
|
|
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
|
|
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