Air Quality
Excellent
No health implications.
12
PM2.5
25
PM10
49
O3
0.4
CO
5
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Jul
46
Excellent
Sun
28 Jul
44
Excellent
Mon
29 Jul
44
Excellent
Tue
30 Jul
84
Good
Wed
31 Jul
30
Excellent
Thu
1 Aug
31
Excellent
Fri
2 Aug
31
Excellent
Air quality in the last 12 months (Coloane Island)
|
2024/06
|
16
|
24
|
20
|
28
|
30
|
32
|
16
|
14
|
17
|
12
|
21
|
23
|
25
|
30
|
30
|
27
|
20
|
24
|
21
|
14
|
15
|
25
|
10
|
14
|
16
|
17
|
15
|
12
|
11
|
20
|
|
|
2024/05
|
25
|
35
|
34
|
25
|
17
|
22
|
35
|
32
|
42
|
39
|
36
|
34
|
33
|
25
|
33
|
41
|
43
|
33
|
35
|
14
|
27
|
32
|
13
|
11
|
17
|
16
|
21
|
21
|
30
|
23
|
17
|
|
2024/04
|
55
|
49
|
27
|
27
|
39
|
39
|
23
|
40
|
22
|
32
|
44
|
39
|
31
|
21
|
35
|
24
|
23
|
17
|
28
|
27
|
18
|
25
|
27
|
35
|
15
|
19
|
30
|
25
|
21
|
25
|
|
|
2024/03
|
16
|
27
|
47
|
31
|
33
|
45
|
45
|
41
|
54
|
35
|
25
|
19
|
56
|
60
|
62
|
57
|
49
|
38
|
27
|
53
|
55
|
55
|
39
|
30
|
27
|
66
|
29
|
44
|
48
|
33
|
35
|
|
2024/02
|
35
|
22
|
24
|
29
|
31
|
26
|
22
|
9
|
18
|
68
|
58
|
43
|
52
|
48
|
35
|
37
|
30
|
40
|
27
|
21
|
22
|
29
|
41
|
39
|
31
|
43
|
39
|
55
|
57
|
||
|
2024/01
|
59
|
58
|
47
|
39
|
46
|
68
|
54
|
55
|
51
|
42
|
47
|
57
|
49
|
35
|
37
|
41
|
39
|
39
|
32
|
39
|
38
|
40
|
27
|
39
|
46
|
56
|
61
|
41
|
61
|
62
|
29
|
|
2023/12
|
58
|
65
|
56
|
62
|
48
|
46
|
34
|
47
|
52
|
40
|
21
|
56
|
31
|
43
|
28
|
27
|
39
|
52
|
35
|
36
|
38
|
57
|
54
|
51
|
48
|
58
|
63
|
57
|
45
|
60
|
68
|
|
2023/11
|
40
|
35
|
37
|
34
|
32
|
45
|
44
|
40
|
40
|
39
|
30
|
27
|
29
|
42
|
42
|
37
|
55
|
63
|
59
|
59
|
49
|
37
|
64
|
55
|
54
|
56
|
69
|
56
|
52
|
69
|
|
|
2023/10
|
30
|
40
|
39
|
54
|
36
|
43
|
22
|
16
|
13
|
21
|
30
|
38
|
33
|
51
|
53
|
51
|
44
|
42
|
35
|
33
|
29
|
36
|
53
|
40
|
35
|
30
|
27
|
34
|
37
|
45
|
45
|
|
2023/09
|
23
|
29
|
29
|
46
|
37
|
45
|
28
|
23
|
21
|
15
|
11
|
13
|
14
|
14
|
15
|
17
|
18
|
16
|
17
|
19
|
23
|
24
|
27
|
22
|
25
|
27
|
30
|
29
|
27
|
31
|
|
|
2023/08
|
16
|
26
|
18
|
21
|
25
|
33
|
27
|
26
|
24
|
26
|
20
|
22
|
24
|
26
|
28
|
29
|
30
|
32
|
27
|
22
|
15
|
19
|
18
|
18
|
17
|
19
|
18
|
21
|
26
|
32
|
29
|
|
2023/07
|
19
|
19
|
21
|
19
|
22
|
16
|
22
|
18
|
14
|
16
|
14
|
16
|
19
|
22
|
50
|
26
|
28
|
33
|
22
|
20
|
18
|
16
|
16
|
16
|
17
|
62
|
55
|
43
|
27
|
28
|
19
|
|
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