Air Quality
Light
Healthy people may experience slight irritations and sensitive individuals will be slightly affected to a larger extent.
77
*
PM2.5
98
PM10
56
O3
1.0
CO
17
SO2
42
NO2
Healthy people may experience slight irritations and sensitive individuals will be slightly affected to a larger extent.
Advise
Children, seniors and individuals with respiratory or heart diseases should reduce sustained and high-intensity outdoor exercises.
Air Quality
Today
4 Feb
102
Light
Thu
5 Feb
54
Good
Fri
6 Feb
52
Good
Sat
7 Feb
57
Good
Sun
8 Feb
61
Good
Mon
9 Feb
43
Excellent
Tue
10 Feb
19
Excellent
Changtu Air quality rank
Air quality in the last 12 months (Changtu)
|
2025/12
|
66
|
29
|
31
|
47
|
55
|
75
|
89
|
43
|
84
|
113
|
56
|
73
|
91
|
123
|
78
|
79
|
89
|
63
|
66
|
38
|
48
|
45
|
45
|
81
|
52
|
60
|
91
|
105
|
42
|
45
|
41
|
|
2025/11
|
54
|
24
|
35
|
53
|
100
|
72
|
89
|
186
|
51
|
37
|
69
|
88
|
53
|
85
|
108
|
62
|
38
|
52
|
65
|
44
|
67
|
90
|
139
|
224
|
102
|
83
|
47
|
46
|
58
|
43
|
|
|
2025/10
|
51
|
58
|
51
|
44
|
28
|
32
|
43
|
32
|
39
|
52
|
73
|
49
|
56
|
108
|
61
|
57
|
77
|
33
|
39
|
42
|
53
|
51
|
54
|
64
|
93
|
43
|
46
|
89
|
102
|
39
|
35
|
|
2025/09
|
34
|
40
|
38
|
34
|
34
|
25
|
29
|
25
|
28
|
26
|
37
|
43
|
38
|
38
|
21
|
26
|
22
|
24
|
25
|
33
|
33
|
24
|
33
|
22
|
42
|
33
|
34
|
33
|
48
|
46
|
|
|
2025/08
|
32
|
34
|
19
|
17
|
21
|
18
|
20
|
22
|
20
|
27
|
20
|
32
|
26
|
34
|
36
|
25
|
16
|
28
|
42
|
26
|
20
|
16
|
43
|
14
|
12
|
22
|
21
|
12
|
20
|
46
|
28
|
|
2025/07
|
23
|
26
|
17
|
17
|
23
|
18
|
21
|
32
|
44
|
43
|
42
|
42
|
20
|
20
|
18
|
22
|
20
|
25
|
29
|
19
|
24
|
32
|
19
|
22
|
28
|
35
|
31
|
19
|
24
|
16
|
19
|
|
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
|
|
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