China   2025-09-25   Thursday   22.31N, 114.18E

Hong Kong

China
2025-09-25

Air Quality

Excellent

No health implications.

10

PM2.5

26

PM10

59

O3

0.5

CO

7

SO2

2

NO2

No health implications.

Advise

Everyone can continue their outdoor activities normally.

Air Quality

Today

25 Sep

47 Excellent

Fri

26 Sep

49 Excellent

Sat

27 Sep

63 Good

Sun

28 Sep

57 Good

Mon

29 Sep

44 Excellent

Tue

30 Sep

44 Excellent

Wed

1 Oct

18 Excellent

Monthly Average AQI (Hong Kong)

2020/09 - 2025/08

Air quality in the last 12 months (Hong Kong)

2025/08
23
26
36
32
18
17
20
26
20
11
13
15
19
16
14
18
16
12
16
17
14
12
19
20
13
18
13
23
17
17
9
2025/07
11
13
18
19
22
15
31
13
19
17
17
20
30
23
21
23
24
25
29
14
17
21
15
27
32
38
25
28
23
31
23
2025/06
27
23
21
14
19
17
14
10
11
10
13
13
12
26
30
24
18
13
11
11
12
14
11
10
9
12
13
11
13
11
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
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