Air Quality
Excellent
No health implications.
14
PM2.5
25
PM10
45
O3
0.3
CO
5
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Jul
42
Excellent
Thu
17 Jul
46
Excellent
Fri
18 Jul
53
Good
Sat
19 Jul
76
Good
Sun
20 Jul
59
Good
Mon
21 Jul
46
Excellent
Tue
22 Jul
23
Excellent
Changtu Air quality rank
Air quality in the last 12 months (Changtu)
|
2025/06
|
28
|
44
|
24
|
16
|
33
|
29
|
19
|
36
|
32
|
17
|
23
|
28
|
30
|
34
|
36
|
21
|
34
|
36
|
33
|
20
|
19
|
26
|
34
|
44
|
43
|
49
|
45
|
25
|
39
|
17
|
|
|
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
|
|
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