Air Quality
Excellent
No health implications.
2
PM2.5
8
PM10
79
O3
0.5
CO
6
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Nov
48
Excellent
Sat
16 Nov
79
Good
Sun
17 Nov
63
Good
Mon
18 Nov
62
Good
Tue
19 Nov
58
Good
Wed
20 Nov
57
Good
Air quality in the last 12 months (New Territories)
|
2024/10
|
28
|
28
|
39
|
35
|
40
|
38
|
39
|
42
|
39
|
32
|
28
|
39
|
26
|
26
|
25
|
24
|
26
|
27
|
37
|
20
|
38
|
25
|
29
|
41
|
45
|
45
|
45
|
21
|
28
|
39
|
41
|
|
2024/09
|
13
|
18
|
34
|
28
|
22
|
13
|
21
|
14
|
11
|
21
|
27
|
23
|
21
|
21
|
32
|
15
|
21
|
21
|
31
|
22
|
15
|
15
|
12
|
10
|
22
|
29
|
28
|
34
|
24
|
35
|
|
|
2024/08
|
23
|
26
|
20
|
22
|
31
|
26
|
32
|
19
|
16
|
17
|
20
|
17
|
19
|
15
|
15
|
14
|
16
|
17
|
17
|
14
|
13
|
26
|
29
|
22
|
15
|
18
|
20
|
33
|
35
|
25
|
16
|
|
2024/07
|
22
|
22
|
12
|
12
|
12
|
11
|
11
|
17
|
11
|
10
|
11
|
10
|
12
|
13
|
13
|
12
|
13
|
13
|
14
|
16
|
16
|
12
|
13
|
19
|
28
|
25
|
17
|
10
|
11
|
9
|
13
|
|
2024/06
|
15
|
24
|
21
|
24
|
21
|
21
|
12
|
11
|
12
|
13
|
19
|
23
|
23
|
24
|
17
|
21
|
18
|
19
|
17
|
13
|
18
|
23
|
10
|
12
|
14
|
14
|
12
|
13
|
11
|
18
|
|
|
2024/05
|
20
|
25
|
29
|
20
|
14
|
20
|
36
|
32
|
33
|
29
|
30
|
35
|
32
|
23
|
29
|
38
|
35
|
28
|
30
|
15
|
14
|
21
|
12
|
11
|
15
|
18
|
20
|
18
|
28
|
17
|
17
|
|
2024/04
|
51
|
49
|
23
|
20
|
42
|
26
|
26
|
34
|
18
|
30
|
38
|
36
|
34
|
22
|
30
|
29
|
24
|
21
|
24
|
23
|
15
|
24
|
20
|
34
|
17
|
21
|
30
|
16
|
20
|
25
|
|
|
2024/03
|
19
|
23
|
32
|
36
|
36
|
45
|
35
|
33
|
50
|
28
|
25
|
16
|
59
|
59
|
60
|
60
|
49
|
35
|
21
|
51
|
50
|
53
|
43
|
26
|
27
|
50
|
27
|
37
|
48
|
36
|
27
|
|
2024/02
|
26
|
24
|
22
|
23
|
24
|
22
|
17
|
16
|
18
|
61
|
52
|
33
|
46
|
38
|
34
|
36
|
28
|
33
|
26
|
19
|
20
|
22
|
36
|
34
|
27
|
44
|
36
|
41
|
48
|
||
|
2024/01
|
59
|
54
|
47
|
38
|
40
|
56
|
49
|
52
|
49
|
35
|
42
|
53
|
44
|
29
|
35
|
42
|
36
|
26
|
24
|
36
|
35
|
34
|
29
|
38
|
42
|
49
|
52
|
34
|
42
|
49
|
33
|
|
2023/12
|
49
|
50
|
49
|
56
|
47
|
42
|
28
|
36
|
43
|
34
|
19
|
39
|
32
|
29
|
23
|
20
|
34
|
47
|
37
|
28
|
30
|
53
|
48
|
43
|
43
|
49
|
48
|
55
|
37
|
51
|
61
|
|
2023/11
|
36
|
30
|
31
|
27
|
24
|
30
|
40
|
38
|
39
|
29
|
27
|
22
|
23
|
36
|
33
|
34
|
53
|
60
|
56
|
52
|
40
|
33
|
51
|
49
|
52
|
45
|
52
|
50
|
52
|
54
|
|
|
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