Air Quality
Excellent
No health implications.
5
PM2.5
11
PM10
45
O3
0.4
CO
3
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Apr
51
Good
Mon
14 Apr
51
Good
Tue
15 Apr
72
Good
Wed
16 Apr
65
Good
Thu
17 Apr
85
Good
Fri
18 Apr
36
Excellent
Sat
19 Apr
15
Excellent
Air quality in the last 12 months (Changtu)
|
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
|
|
|
2024/05
|
40
|
59
|
61
|
60
|
36
|
53
|
45
|
44
|
70
|
69
|
82
|
32
|
45
|
60
|
28
|
21
|
43
|
53
|
28
|
18
|
37
|
49
|
28
|
25
|
22
|
16
|
15
|
25
|
42
|
39
|
15
|
|
2024/04
|
63
|
67
|
54
|
83
|
108
|
81
|
111
|
136
|
135
|
142
|
71
|
89
|
59
|
69
|
184
|
164
|
73
|
53
|
60
|
186
|
121
|
67
|
60
|
53
|
58
|
61
|
61
|
23
|
38
|
51
|
|
|
2024/03
|
37
|
44
|
38
|
51
|
36
|
38
|
44
|
40
|
45
|
90
|
87
|
49
|
62
|
91
|
86
|
123
|
56
|
87
|
70
|
56
|
84
|
41
|
76
|
36
|
63
|
70
|
83
|
179
|
91
|
70
|
62
|
|
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