Air Quality
Excellent
No health implications.
17
PM2.5
23
PM10
63
O3
0.8
CO
5
SO2
26
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Aug
59
Good
Mon
17 Aug
66
Good
Tue
18 Aug
59
Good
Wed
19 Aug
55
Good
Thu
20 Aug
54
Good
Fri
21 Aug
56
Good
Sat
22 Aug
18
Excellent
Air quality in the last 12 months (New Territories)
|
2026/07
|
14
|
18
|
18
|
17
|
18
|
18
|
14
|
15
|
17
|
17
|
32
|
26
|
18
|
13
|
15
|
13
|
15
|
22
|
28
|
28
|
28
|
33
|
34
|
34
|
39
|
17
|
16
|
14
|
14
|
17
|
12
|
|
2026/06
|
39
|
30
|
25
|
22
|
25
|
20
|
20
|
18
|
17
|
25
|
26
|
33
|
20
|
26
|
18
|
14
|
13
|
14
|
18
|
18
|
17
|
18
|
21
|
25
|
26
|
16
|
21
|
17
|
17
|
16
|
|
|
2026/05
|
27
|
34
|
24
|
25
|
29
|
25
|
26
|
27
|
30
|
32
|
35
|
30
|
18
|
16
|
19
|
26
|
27
|
34
|
22
|
18
|
16
|
18
|
22
|
21
|
20
|
21
|
20
|
23
|
31
|
37
|
39
|
|
2026/04
|
36
|
34
|
41
|
29
|
24
|
30
|
32
|
40
|
34
|
25
|
28
|
21
|
20
|
16
|
18
|
19
|
25
|
68
|
57
|
44
|
21
|
24
|
26
|
14
|
24
|
33
|
34
|
27
|
21
|
28
|
|
|
2026/03
|
23
|
24
|
13
|
9
|
17
|
24
|
39
|
48
|
41
|
25
|
28
|
40
|
44
|
38
|
39
|
35
|
30
|
26
|
23
|
34
|
36
|
33
|
31
|
26
|
30
|
29
|
39
|
30
|
33
|
25
|
30
|
|
2026/02
|
22
|
33
|
39
|
45
|
29
|
19
|
33
|
26
|
37
|
31
|
27
|
41
|
38
|
24
|
23
|
22
|
31
|
33
|
40
|
44
|
37
|
32
|
43
|
60
|
39
|
21
|
28
|
14
|
|||
|
2026/01
|
40
|
22
|
28
|
41
|
46
|
37
|
42
|
30
|
36
|
45
|
36
|
60
|
57
|
30
|
45
|
37
|
33
|
35
|
40
|
32
|
43
|
42
|
42
|
57
|
23
|
18
|
51
|
42
|
30
|
32
|
30
|
|
2025/12
|
35
|
27
|
45
|
65
|
50
|
42
|
47
|
46
|
43
|
46
|
43
|
42
|
43
|
37
|
38
|
49
|
45
|
42
|
39
|
20
|
37
|
46
|
29
|
32
|
23
|
31
|
42
|
35
|
31
|
52
|
29
|
|
2025/11
|
30
|
37
|
40
|
26
|
16
|
23
|
25
|
27
|
29
|
20
|
21
|
25
|
16
|
24
|
40
|
39
|
36
|
43
|
24
|
31
|
33
|
40
|
57
|
51
|
45
|
57
|
49
|
55
|
56
|
52
|
|
|
2025/10
|
14
|
11
|
10
|
20
|
22
|
15
|
16
|
19
|
25
|
22
|
19
|
13
|
11
|
10
|
13
|
19
|
28
|
26
|
25
|
22
|
12
|
11
|
22
|
31
|
33
|
39
|
52
|
48
|
32
|
35
|
34
|
|
2025/09
|
9
|
10
|
11
|
11
|
9
|
15
|
14
|
17
|
18
|
14
|
11
|
11
|
9
|
9
|
10
|
16
|
18
|
16
|
14
|
14
|
10
|
21
|
20
|
19
|
20
|
21
|
18
|
22
|
14
|
17
|
|
|
2025/08
|
23
|
26
|
35
|
30
|
17
|
17
|
20
|
27
|
21
|
10
|
13
|
16
|
20
|
17
|
14
|
18
|
17
|
12
|
15
|
16
|
14
|
14
|
19
|
20
|
14
|
19
|
13
|
24
|
18
|
18
|
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