Air Quality
Excellent
No health implications.
17
PM2.5
39
PM10
74
O3
0.4
CO
6
SO2
26
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Feb
47
Excellent
Tue
10 Feb
43
Excellent
Wed
11 Feb
55
Good
Thu
12 Feb
59
Good
Fri
13 Feb
49
Excellent
Sat
14 Feb
53
Good
Sun
15 Feb
27
Excellent
Air quality in the last 12 months (New Territories)
|
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
|
|
2025/07
|
12
|
13
|
18
|
19
|
22
|
17
|
33
|
14
|
20
|
17
|
17
|
21
|
30
|
24
|
22
|
24
|
26
|
26
|
29
|
14
|
17
|
20
|
15
|
26
|
33
|
38
|
27
|
29
|
24
|
32
|
23
|
|
2025/06
|
27
|
24
|
20
|
14
|
20
|
18
|
15
|
11
|
12
|
11
|
14
|
13
|
13
|
25
|
30
|
24
|
18
|
13
|
12
|
11
|
13
|
14
|
11
|
11
|
10
|
12
|
13
|
11
|
12
|
11
|
|
|
2025/05
|
35
|
37
|
44
|
23
|
25
|
20
|
17
|
46
|
26
|
31
|
28
|
24
|
32
|
25
|
17
|
13
|
12
|
13
|
14
|
12
|
18
|
16
|
19
|
21
|
37
|
27
|
32
|
29
|
20
|
12
|
23
|
|
2025/04
|
22
|
19
|
28
|
41
|
31
|
42
|
44
|
50
|
38
|
25
|
22
|
25
|
152
|
154
|
105
|
75
|
58
|
46
|
25
|
24
|
22
|
23
|
22
|
19
|
21
|
15
|
28
|
33
|
25
|
40
|
|
|
2025/03
|
31
|
31
|
17
|
23
|
20
|
11
|
18
|
30
|
28
|
36
|
35
|
23
|
29
|
26
|
15
|
11
|
41
|
37
|
38
|
42
|
44
|
40
|
40
|
41
|
38
|
29
|
26
|
30
|
12
|
9
|
10
|
|
2025/02
|
20
|
17
|
13
|
14
|
36
|
33
|
25
|
40
|
43
|
43
|
29
|
20
|
39
|
40
|
26
|
48
|
39
|
61
|
37
|
35
|
39
|
32
|
18
|
21
|
49
|
48
|
28
|
26
|
|||
|
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