China   2023-01-31   Tuesday   22.31N, 114.18E

Hong Kong

China
2023-01-31

Air Quality

Excellent

No health implications.

19

PM2.5

33

PM10

87

O3

0.6

CO

5

SO2

12

NO2

No health implications.

Advise

Everyone can continue their outdoor activities normally.

Air Quality

Today

31 Jan

50 Excellent

Wed

1 Feb

51 Good

Thu

2 Feb

47 Excellent

Fri

3 Feb

37 Excellent

Sat

4 Feb

35 Excellent

Sun

5 Feb

37 Excellent

Mon

6 Feb

43 Excellent

Monthly Average AQI (Hong Kong)

2018/01 - 2022/12

Air quality in the last 12 months (Hong Kong)

2022/12
14
20
31
29
20
25
28
36
41
31
44
43
46
15
14
14
30
20
24
27
37
34
37
27
29
35
35
46
76
56
39
2022/11
30
17
24
33
17
23
14
17
29
27
20
18
33
33
31
30
25
25
32
37
26
25
17
21
21
16
32
21
13
17
2022/10
17
21
18
22
29
28
32
30
39
33
45
41
39
47
49
46
46
50
34
34
33
36
34
38
37
33
28
43
41
34
41
2022/09
38
30
45
37
54
53
32
35
57
53
60
68
68
72
73
92
66
53
49
44
45
37
45
40
53
44
26
24
25
14
2022/08
16
19
22
16
16
14
14
17
13
19
14
15
17
15
16
14
14
15
13
15
16
19
52
32
20
19
24
33
25
23
50
2022/07
17
22
30
32
23
21
16
14
10
13
13
12
12
12
14
16
21
19
15
14
12
21
20
25
31
21
16
26
39
34
60
2022/06
20
17
22
25
23
20
17
14
15
15
16
21
22
21
16
14
15
15
19
21
17
13
14
14
12
12
11
13
14
11
2022/05
21
21
32
39
33
34
32
36
36
21
14
13
13
19
25
20
28
42
34
32
30
33
28
22
21
19
17
18
16
15
17
2022/04
25
20
27
43
46
35
32
46
30
32
28
19
19
41
34
38
50
43
16
26
40
25
22
15
16
20
19
20
20
24
2022/03
31
48
46
38
37
40
37
27
29
30
29
28
30
22
17
26
20
46
45
30
40
32
16
18
26
27
27
16
18
29
26
2022/02
21
12
14
16
19
30
28
13
26
28
21
38
29
18
29
38
32
25
12
17
15
12
16
24
28
39
42
31
2022/01
57
62
29
37
29
46
52
40
44
41
27
39
52
59
43
39
44
40
28
30
33
20
18
25
20
33
38
31
20
17
21
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