Air Quality
Excellent
No health implications.
17
PM2.5
30
PM10
80
O3
0.2
CO
7
SO2
24
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Jul
94
Good
Wed
16 Jul
106
Light
Thu
17 Jul
100
Good
Fri
18 Jul
88
Good
Sat
19 Jul
82
Good
Sun
20 Jul
63
Good
Mon
21 Jul
16
Excellent
Air quality in the last 12 months (Changshou)
|
2025/06
|
21
|
23
|
38
|
49
|
47
|
52
|
61
|
39
|
21
|
32
|
39
|
36
|
42
|
42
|
37
|
39
|
33
|
26
|
19
|
28
|
20
|
14
|
22
|
25
|
25
|
26
|
23
|
19
|
18
|
28
|
|
|
2025/05
|
48
|
54
|
62
|
41
|
37
|
59
|
65
|
31
|
40
|
49
|
46
|
49
|
68
|
68
|
68
|
71
|
63
|
79
|
61
|
59
|
62
|
34
|
39
|
57
|
45
|
36
|
27
|
28
|
26
|
27
|
23
|
|
2025/04
|
45
|
58
|
61
|
60
|
75
|
87
|
87
|
65
|
73
|
59
|
41
|
144
|
178
|
125
|
78
|
77
|
71
|
65
|
45
|
36
|
36
|
41
|
47
|
46
|
53
|
50
|
47
|
44
|
32
|
39
|
|
|
2025/03
|
76
|
97
|
50
|
25
|
21
|
23
|
33
|
55
|
61
|
54
|
52
|
88
|
51
|
50
|
36
|
31
|
29
|
37
|
57
|
56
|
74
|
110
|
105
|
65
|
51
|
51
|
76
|
59
|
25
|
27
|
39
|
|
2025/02
|
102
|
54
|
44
|
47
|
52
|
45
|
44
|
44
|
56
|
69
|
89
|
79
|
47
|
52
|
45
|
54
|
53
|
51
|
51
|
45
|
49
|
50
|
45
|
52
|
65
|
76
|
69
|
81
|
|||
|
2025/01
|
152
|
199
|
197
|
161
|
94
|
101
|
79
|
46
|
51
|
51
|
66
|
76
|
96
|
100
|
69
|
83
|
92
|
109
|
106
|
124
|
139
|
193
|
235
|
86
|
40
|
34
|
59
|
107
|
324
|
142
|
102
|
|
2024/12
|
101
|
122
|
99
|
77
|
33
|
45
|
37
|
39
|
41
|
47
|
65
|
47
|
49
|
47
|
65
|
75
|
96
|
112
|
72
|
93
|
136
|
101
|
70
|
103
|
130
|
132
|
124
|
124
|
112
|
114
|
134
|
|
2024/11
|
66
|
51
|
69
|
63
|
31
|
49
|
71
|
93
|
41
|
37
|
72
|
58
|
47
|
38
|
42
|
38
|
24
|
26
|
21
|
27
|
37
|
38
|
36
|
34
|
24
|
40
|
49
|
53
|
77
|
98
|
|
|
2024/10
|
20
|
19
|
26
|
54
|
67
|
52
|
50
|
51
|
77
|
96
|
64
|
43
|
44
|
51
|
63
|
60
|
28
|
24
|
35
|
16
|
15
|
22
|
36
|
55
|
62
|
93
|
52
|
58
|
70
|
86
|
94
|
|
2024/09
|
43
|
37
|
29
|
26
|
38
|
44
|
44
|
33
|
24
|
36
|
40
|
42
|
37
|
39
|
20
|
28
|
30
|
34
|
32
|
50
|
39
|
39
|
35
|
51
|
72
|
87
|
65
|
47
|
33
|
24
|
|
|
2024/08
|
26
|
22
|
19
|
20
|
23
|
23
|
26
|
29
|
32
|
49
|
42
|
55
|
49
|
44
|
42
|
47
|
37
|
48
|
45
|
45
|
41
|
40
|
30
|
25
|
23
|
23
|
37
|
32
|
32
|
25
|
29
|
|
2024/07
|
33
|
29
|
29
|
20
|
21
|
21
|
19
|
18
|
19
|
25
|
19
|
26
|
24
|
15
|
17
|
21
|
25
|
29
|
20
|
23
|
23
|
23
|
23
|
18
|
44
|
48
|
31
|
38
|
44
|
30
|
29
|
|
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