Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
47
O3
0.5
CO
7
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 Jun
35
Excellent
Mon
23 Jun
42
Excellent
Tue
24 Jun
43
Excellent
Wed
25 Jun
39
Excellent
Thu
26 Jun
34
Excellent
Fri
27 Jun
36
Excellent
Sat
28 Jun
25
Excellent
Air quality in the last 12 months (Hong Kong)
|
2025/05
|
34
|
37
|
44
|
23
|
24
|
19
|
17
|
46
|
26
|
31
|
28
|
24
|
32
|
24
|
17
|
12
|
11
|
12
|
13
|
12
|
17
|
16
|
18
|
20
|
37
|
26
|
31
|
28
|
19
|
12
|
23
|
|
2025/04
|
23
|
19
|
28
|
40
|
30
|
43
|
43
|
50
|
38
|
25
|
21
|
24
|
150
|
154
|
106
|
73
|
58
|
46
|
26
|
23
|
22
|
23
|
21
|
18
|
23
|
15
|
27
|
33
|
25
|
40
|
|
|
2025/03
|
32
|
32
|
16
|
22
|
21
|
10
|
18
|
30
|
29
|
36
|
35
|
23
|
28
|
27
|
15
|
11
|
41
|
37
|
38
|
41
|
43
|
39
|
38
|
37
|
36
|
27
|
25
|
29
|
12
|
9
|
10
|
|
2025/02
|
21
|
17
|
13
|
14
|
36
|
33
|
25
|
40
|
45
|
42
|
29
|
21
|
39
|
39
|
26
|
49
|
40
|
62
|
37
|
35
|
38
|
31
|
20
|
21
|
48
|
50
|
28
|
27
|
|||
|
2025/01
|
52
|
61
|
50
|
45
|
52
|
57
|
45
|
58
|
57
|
46
|
44
|
28
|
34
|
37
|
51
|
62
|
52
|
53
|
47
|
47
|
35
|
49
|
42
|
20
|
24
|
21
|
18
|
33
|
52
|
37
|
30
|
|
2024/12
|
36
|
40
|
36
|
28
|
49
|
59
|
56
|
35
|
28
|
28
|
43
|
36
|
38
|
54
|
47
|
43
|
47
|
48
|
52
|
58
|
48
|
52
|
61
|
58
|
56
|
43
|
63
|
59
|
63
|
57
|
61
|
|
2024/11
|
33
|
29
|
39
|
47
|
44
|
53
|
41
|
39
|
41
|
37
|
39
|
39
|
28
|
13
|
11
|
22
|
17
|
30
|
15
|
8
|
14
|
26
|
29
|
36
|
37
|
18
|
31
|
33
|
32
|
35
|
|
|
2024/10
|
29
|
29
|
40
|
36
|
41
|
39
|
39
|
42
|
39
|
32
|
27
|
38
|
25
|
25
|
24
|
23
|
25
|
27
|
37
|
19
|
38
|
26
|
29
|
40
|
45
|
45
|
45
|
22
|
28
|
39
|
41
|
|
2024/09
|
13
|
17
|
34
|
27
|
22
|
13
|
22
|
15
|
13
|
21
|
27
|
20
|
20
|
20
|
31
|
15
|
20
|
21
|
30
|
22
|
16
|
15
|
12
|
11
|
23
|
27
|
27
|
33
|
23
|
35
|
|
|
2024/08
|
24
|
27
|
20
|
21
|
31
|
25
|
30
|
18
|
15
|
17
|
20
|
16
|
18
|
13
|
15
|
13
|
15
|
17
|
16
|
14
|
13
|
24
|
27
|
22
|
14
|
16
|
19
|
32
|
35
|
24
|
15
|
|
2024/07
|
22
|
23
|
12
|
12
|
12
|
11
|
11
|
16
|
10
|
10
|
10
|
9
|
11
|
12
|
12
|
12
|
12
|
13
|
14
|
15
|
15
|
12
|
12
|
18
|
27
|
24
|
18
|
10
|
11
|
8
|
13
|
|
2024/06
|
16
|
23
|
22
|
25
|
21
|
23
|
12
|
11
|
12
|
14
|
19
|
23
|
22
|
24
|
18
|
22
|
18
|
19
|
17
|
13
|
18
|
24
|
10
|
12
|
15
|
14
|
13
|
13
|
11
|
18
|
|
|
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