Air Quality
Excellent
No health implications.
22
PM2.5
47
PM10
75
O3
0.6
CO
10
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
26 Apr
61
Good
Mon
27 Apr
42
Excellent
Tue
28 Apr
40
Excellent
Wed
29 Apr
47
Excellent
Thu
30 Apr
52
Good
Fri
1 May
51
Good
Sat
2 May
25
Excellent
Air quality in the last 12 months (Bishan)
|
2026/03
|
41
|
42
|
36
|
33
|
51
|
46
|
38
|
41
|
33
|
29
|
45
|
46
|
54
|
41
|
28
|
36
|
32
|
26
|
36
|
45
|
47
|
46
|
48
|
35
|
37
|
48
|
40
|
33
|
41
|
36
|
27
|
|
2026/02
|
64
|
84
|
78
|
80
|
94
|
115
|
70
|
53
|
50
|
70
|
65
|
78
|
83
|
87
|
106
|
62
|
97
|
93
|
99
|
80
|
79
|
98
|
104
|
45
|
42
|
51
|
46
|
24
|
|||
|
2026/01
|
24
|
19
|
36
|
45
|
54
|
56
|
64
|
72
|
109
|
160
|
175
|
180
|
157
|
176
|
177
|
186
|
194
|
215
|
121
|
22
|
26
|
58
|
59
|
64
|
76
|
79
|
71
|
85
|
87
|
45
|
45
|
|
2025/12
|
131
|
171
|
76
|
61
|
59
|
67
|
74
|
89
|
128
|
120
|
91
|
106
|
42
|
55
|
63
|
83
|
102
|
105
|
121
|
64
|
37
|
36
|
33
|
47
|
42
|
42
|
55
|
63
|
74
|
89
|
45
|
|
2025/11
|
35
|
42
|
45
|
37
|
38
|
28
|
20
|
23
|
30
|
30
|
38
|
43
|
49
|
55
|
33
|
46
|
26
|
24
|
37
|
50
|
59
|
68
|
51
|
57
|
59
|
56
|
69
|
72
|
97
|
111
|
|
|
2025/10
|
45
|
26
|
32
|
25
|
29
|
32
|
47
|
48
|
30
|
55
|
62
|
40
|
21
|
30
|
28
|
36
|
33
|
21
|
16
|
15
|
17
|
21
|
19
|
33
|
26
|
30
|
32
|
34
|
37
|
35
|
40
|
|
2025/09
|
36
|
50
|
47
|
57
|
64
|
21
|
32
|
16
|
32
|
40
|
29
|
18
|
13
|
24
|
26
|
28
|
41
|
25
|
15
|
18
|
32
|
26
|
22
|
27
|
46
|
32
|
35
|
35
|
18
|
31
|
|
|
2025/08
|
36
|
32
|
34
|
36
|
44
|
33
|
27
|
35
|
35
|
34
|
21
|
25
|
29
|
32
|
34
|
24
|
27
|
28
|
25
|
22
|
31
|
34
|
24
|
24
|
29
|
27
|
26
|
27
|
29
|
32
|
26
|
|
2025/07
|
23
|
17
|
17
|
19
|
24
|
30
|
27
|
22
|
16
|
29
|
25
|
27
|
38
|
33
|
34
|
40
|
38
|
34
|
21
|
30
|
28
|
26
|
22
|
20
|
17
|
21
|
27
|
33
|
40
|
39
|
31
|
|
2025/06
|
30
|
27
|
41
|
48
|
56
|
57
|
42
|
25
|
20
|
34
|
37
|
38
|
35
|
39
|
34
|
38
|
29
|
25
|
17
|
26
|
26
|
20
|
20
|
21
|
16
|
27
|
26
|
25
|
24
|
20
|
|
|
2025/05
|
49
|
60
|
86
|
68
|
48
|
76
|
56
|
39
|
61
|
61
|
54
|
54
|
61
|
73
|
86
|
78
|
66
|
78
|
66
|
64
|
60
|
42
|
58
|
65
|
47
|
46
|
30
|
27
|
31
|
31
|
27
|
|
2025/04
|
37
|
48
|
55
|
57
|
76
|
79
|
67
|
64
|
75
|
71
|
54
|
266
|
250
|
151
|
109
|
78
|
77
|
65
|
49
|
37
|
46
|
45
|
48
|
41
|
50
|
53
|
43
|
43
|
48
|
38
|
|
|
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