Air Quality
Excellent
No health implications.
16
PM2.5
43
PM10
54
O3
0.8
CO
13
SO2
23
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Feb
85
Good
Tue
10 Feb
96
Good
Wed
11 Feb
90
Good
Thu
12 Feb
86
Good
Fri
13 Feb
94
Good
Sat
14 Feb
26
Excellent
Sun
15 Feb
37
Excellent
Changtu Air quality rank
Air quality in the last 12 months (Changtu)
|
2026/01
|
69
|
86
|
97
|
140
|
82
|
70
|
49
|
55
|
82
|
51
|
40
|
45
|
35
|
48
|
58
|
80
|
59
|
54
|
44
|
57
|
62
|
51
|
58
|
53
|
86
|
92
|
71
|
67
|
105
|
78
|
71
|
|
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
|
|||
|
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