Air Quality
Excellent
No health implications.
12
PM2.5
23
PM10
20
O3
0.4
CO
6
SO2
21
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Feb
77
Good
Tue
17 Feb
66
Good
Wed
18 Feb
65
Good
Thu
19 Feb
54
Good
Fri
20 Feb
63
Good
Sat
21 Feb
62
Good
Sun
22 Feb
47
Excellent
New Territories Air quality rank
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