Air Quality
Excellent
No health implications.
9
PM2.5
18
PM10
26
O3
0.3
CO
5
SO2
39
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Jun
75
Good
Tue
10 Jun
49
Excellent
Wed
11 Jun
65
Good
Thu
12 Jun
98
Good
Fri
13 Jun
96
Good
Sat
14 Jun
73
Good
Sun
15 Jun
41
Excellent
Air quality in the last 12 months (Changtu)
|
2025/05
|
21
|
31
|
29
|
28
|
35
|
26
|
50
|
47
|
41
|
35
|
42
|
59
|
54
|
52
|
50
|
34
|
27
|
32
|
36
|
39
|
43
|
49
|
33
|
39
|
28
|
42
|
48
|
52
|
50
|
58
|
57
|
|
2025/04
|
93
|
83
|
80
|
68
|
39
|
45
|
60
|
63
|
86
|
83
|
63
|
33
|
12
|
24
|
47
|
48
|
54
|
35
|
39
|
57
|
70
|
20
|
44
|
77
|
70
|
90
|
47
|
52
|
70
|
54
|
|
|
2025/03
|
91
|
32
|
41
|
55
|
79
|
71
|
58
|
86
|
106
|
97
|
71
|
127
|
36
|
45
|
55
|
60
|
79
|
71
|
79
|
94
|
91
|
201
|
168
|
95
|
131
|
154
|
56
|
29
|
33
|
42
|
69
|
|
2025/02
|
124
|
175
|
76
|
73
|
61
|
65
|
57
|
51
|
71
|
65
|
70
|
49
|
67
|
84
|
94
|
53
|
35
|
35
|
45
|
57
|
56
|
56
|
59
|
60
|
105
|
62
|
85
|
120
|
|||
|
2025/01
|
46
|
38
|
52
|
70
|
92
|
111
|
54
|
39
|
65
|
69
|
76
|
91
|
93
|
72
|
42
|
53
|
65
|
73
|
76
|
60
|
71
|
87
|
94
|
78
|
77
|
95
|
127
|
62
|
90
|
78
|
99
|
|
2024/12
|
32
|
22
|
39
|
31
|
39
|
34
|
49
|
55
|
63
|
68
|
45
|
60
|
75
|
52
|
42
|
39
|
45
|
60
|
51
|
61
|
73
|
58
|
63
|
51
|
71
|
41
|
45
|
50
|
56
|
67
|
45
|
|
2024/11
|
66
|
89
|
110
|
33
|
34
|
33
|
46
|
67
|
60
|
47
|
42
|
46
|
47
|
37
|
34
|
36
|
28
|
28
|
38
|
71
|
74
|
71
|
110
|
65
|
52
|
27
|
38
|
42
|
46
|
50
|
|
|
2024/10
|
20
|
24
|
29
|
41
|
49
|
51
|
33
|
44
|
43
|
23
|
41
|
41
|
69
|
49
|
18
|
34
|
63
|
49
|
28
|
42
|
30
|
30
|
39
|
60
|
92
|
76
|
33
|
50
|
74
|
90
|
93
|
|
2024/09
|
20
|
20
|
22
|
32
|
21
|
25
|
24
|
31
|
34
|
18
|
27
|
24
|
32
|
18
|
23
|
27
|
41
|
32
|
28
|
11
|
18
|
30
|
28
|
37
|
25
|
23
|
34
|
40
|
43
|
18
|
|
|
2024/08
|
17
|
17
|
24
|
29
|
18
|
26
|
37
|
36
|
30
|
24
|
22
|
19
|
18
|
27
|
28
|
27
|
31
|
34
|
27
|
24
|
12
|
13
|
22
|
29
|
21
|
24
|
19
|
23
|
26
|
37
|
26
|
|
2024/07
|
68
|
48
|
14
|
42
|
50
|
43
|
31
|
58
|
48
|
53
|
61
|
64
|
66
|
57
|
61
|
36
|
15
|
39
|
43
|
17
|
32
|
23
|
31
|
20
|
21
|
9
|
14
|
11
|
21
|
35
|
21
|
|
2024/06
|
22
|
18
|
28
|
40
|
47
|
41
|
36
|
32
|
31
|
34
|
45
|
40
|
38
|
28
|
17
|
27
|
39
|
39
|
46
|
38
|
40
|
54
|
33
|
11
|
24
|
31
|
47
|
38
|
31
|
28
|
|
|
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