Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
PM2.5
PM10
O3
CO
SO2
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
17 Jul
Fri
18 Jul
Sat
19 Jul
Sun
20 Jul
Mon
21 Jul
Tue
22 Jul
Wed
23 Jul
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)
|
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
|
|
|
2025/03
|
49
|
62
|
19
|
21
|
24
|
38
|
57
|
70
|
44
|
42
|
66
|
31
|
39
|
40
|
25
|
43
|
48
|
40
|
45
|
58
|
58
|
59
|
65
|
64
|
83
|
82
|
78
|
51
|
68
|
35
|
37
|
|
2025/02
|
23
|
64
|
73
|
66
|
52
|
36
|
54
|
33
|
43
|
53
|
34
|
84
|
47
|
38
|
85
|
116
|
58
|
45
|
48
|
30
|
34
|
57
|
63
|
75
|
95
|
116
|
126
|
83
|
|||
|
2025/01
|
72
|
50
|
55
|
49
|
92
|
90
|
69
|
70
|
32
|
45
|
64
|
75
|
90
|
117
|
43
|
61
|
77
|
76
|
109
|
176
|
132
|
54
|
37
|
41
|
28
|
47
|
55
|
51
|
94
|
61
|
48
|
|
2024/12
|
64
|
83
|
62
|
32
|
65
|
131
|
140
|
33
|
48
|
38
|
62
|
44
|
70
|
63
|
65
|
68
|
85
|
68
|
37
|
58
|
83
|
46
|
43
|
56
|
84
|
122
|
54
|
60
|
67
|
81
|
81
|
|
2024/11
|
10
|
53
|
71
|
65
|
33
|
27
|
24
|
28
|
30
|
36
|
40
|
42
|
46
|
37
|
63
|
31
|
25
|
25
|
24
|
29
|
61
|
77
|
22
|
27
|
31
|
41
|
66
|
69
|
53
|
61
|
|
|
2024/10
|
15
|
24
|
17
|
19
|
16
|
9
|
11
|
34
|
38
|
61
|
73
|
58
|
22
|
30
|
51
|
33
|
31
|
34
|
25
|
34
|
25
|
36
|
39
|
28
|
27
|
15
|
17
|
50
|
25
|
27
|
22
|
|
2024/09
|
30
|
33
|
16
|
21
|
23
|
30
|
49
|
31
|
15
|
27
|
8
|
21
|
14
|
16
|
16
|
10
|
13
|
16
|
15
|
11
|
19
|
25
|
22
|
28
|
34
|
14
|
24
|
27
|
30
|
30
|
|
|
2024/08
|
23
|
25
|
35
|
28
|
34
|
28
|
34
|
29
|
30
|
37
|
39
|
28
|
32
|
19
|
15
|
28
|
20
|
14
|
14
|
20
|
25
|
35
|
32
|
19
|
20
|
22
|
29
|
22
|
13
|
20
|
26
|
|
2024/07
|
18
|
21
|
17
|
27
|
28
|
32
|
26
|
29
|
33
|
18
|
18
|
19
|
16
|
21
|
47
|
34
|
30
|
23
|
31
|
27
|
31
|
30
|
22
|
15
|
17
|
17
|
18
|
14
|
15
|
15
|
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
*: primary pollution