Air Quality
Excellent
No health implications.
7
PM2.5
15
PM10
46
O3
0.7
CO
5
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 Sep
59
Good
Tue
15 Sep
62
Good
Wed
16 Sep
73
Good
Thu
17 Sep
66
Good
Fri
18 Sep
56
Good
Sat
19 Sep
57
Good
Sun
20 Sep
16
Excellent
Air quality in the last 12 months (New Territories)
|
2026/08
|
11
|
13
|
11
|
15
|
20
|
25
|
31
|
37
|
35
|
39
|
48
|
35
|
23
|
19
|
17
|
28
|
29
|
26
|
18
|
17
|
14
|
16
|
21
|
22
|
21
|
21
|
18
|
22
|
26
|
30
|
18
|
|
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
|
|
|
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