Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Apr
Mon
20 Apr
Tue
21 Apr
Wed
22 Apr
Thu
23 Apr
Fri
24 Apr
Sat
25 Apr
Real-time AQI (Monitoring Station in Changshu)
菱塘子站
5938
PM2.5
68 *
PM10
77
O3
0.9
CO
10
SO2
26
NO2
兴福子站
5740 *
PM2.5
61
PM10
74
O3
0.7
CO
10
SO2
28
NO2
海虞子站
5942 *
PM2.5
60
PM10
72
O3
0.7
CO
10
SO2
27
NO2
Air quality in the last 12 months (Changshu)
|
2026/03
|
26
|
22
|
41
|
24
|
46
|
54
|
40
|
31
|
40
|
31
|
41
|
43
|
69
|
48
|
41
|
59
|
65
|
45
|
60
|
60
|
41
|
57
|
52
|
52
|
93
|
56
|
48
|
49
|
62
|
36
|
56
|
|
2026/02
|
77
|
98
|
60
|
66
|
112
|
65
|
34
|
41
|
38
|
52
|
105
|
118
|
94
|
92
|
118
|
37
|
59
|
98
|
86
|
51
|
48
|
100
|
62
|
22
|
41
|
24
|
19
|
44
|
|||
|
2026/01
|
21
|
32
|
60
|
83
|
114
|
129
|
62
|
90
|
84
|
93
|
59
|
59
|
83
|
88
|
120
|
170
|
100
|
46
|
23
|
25
|
40
|
48
|
78
|
93
|
65
|
20
|
61
|
49
|
38
|
30
|
25
|
|
2025/12
|
100
|
51
|
38
|
45
|
63
|
70
|
104
|
84
|
53
|
42
|
94
|
26
|
35
|
63
|
65
|
72
|
111
|
59
|
58
|
105
|
27
|
26
|
41
|
62
|
44
|
28
|
42
|
78
|
105
|
83
|
27
|
|
2025/11
|
138
|
94
|
25
|
36
|
32
|
40
|
37
|
28
|
26
|
44
|
27
|
40
|
44
|
90
|
56
|
48
|
38
|
41
|
57
|
68
|
89
|
130
|
142
|
101
|
88
|
66
|
192
|
146
|
105
|
97
|
|
|
2025/10
|
38
|
24
|
32
|
30
|
29
|
36
|
38
|
17
|
19
|
28
|
42
|
54
|
52
|
21
|
31
|
18
|
23
|
16
|
25
|
28
|
24
|
25
|
29
|
33
|
37
|
36
|
50
|
28
|
25
|
29
|
30
|
|
2025/09
|
25
|
19
|
31
|
30
|
32
|
29
|
44
|
24
|
17
|
21
|
25
|
28
|
38
|
37
|
27
|
36
|
33
|
18
|
22
|
19
|
22
|
21
|
23
|
13
|
18
|
26
|
33
|
38
|
23
|
32
|
|
|
2025/08
|
28
|
21
|
24
|
27
|
30
|
27
|
17
|
22
|
24
|
28
|
23
|
32
|
21
|
16
|
13
|
18
|
28
|
16
|
23
|
26
|
43
|
41
|
37
|
34
|
31
|
30
|
20
|
17
|
18
|
16
|
24
|
|
2025/07
|
20
|
26
|
32
|
34
|
35
|
29
|
15
|
12
|
15
|
44
|
24
|
17
|
32
|
35
|
41
|
42
|
33
|
26
|
16
|
18
|
14
|
15
|
15
|
22
|
21
|
13
|
14
|
17
|
17
|
7
|
12
|
|
2025/06
|
12
|
8
|
39
|
61
|
48
|
43
|
32
|
14
|
15
|
21
|
19
|
16
|
13
|
31
|
14
|
26
|
47
|
44
|
31
|
22
|
19
|
11
|
14
|
20
|
37
|
42
|
25
|
27
|
25
|
24
|
|
|
2025/05
|
50
|
57
|
49
|
26
|
33
|
69
|
65
|
42
|
18
|
43
|
39
|
47
|
46
|
42
|
55
|
26
|
45
|
64
|
46
|
33
|
23
|
40
|
18
|
47
|
46
|
39
|
30
|
32
|
46
|
48
|
49
|
|
2025/04
|
47
|
64
|
47
|
50
|
68
|
71
|
73
|
65
|
85
|
84
|
71
|
119
|
95
|
73
|
56
|
55
|
61
|
63
|
60
|
42
|
45
|
44
|
60
|
75
|
54
|
37
|
42
|
53
|
49
|
54
|
|
|
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
*: primary pollution