Air Quality
Excellent
No health implications.
22
PM2.5
40
PM10
159
O3
0.4
CO
5
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Sep
90
Good
Thu
24 Sep
93
Good
Fri
25 Sep
90
Good
Sat
26 Sep
84
Good
Sun
27 Sep
84
Good
Mon
28 Sep
77
Good
Tue
29 Sep
15
Excellent
Air quality in the last 12 months (Changtai)
|
2026/08
|
26
|
28
|
44
|
46
|
42
|
29
|
39
|
33
|
21
|
20
|
35
|
47
|
42
|
28
|
27
|
30
|
33
|
25
|
26
|
20
|
25
|
28
|
28
|
18
|
15
|
16
|
26
|
25
|
33
|
24
|
19
|
|
2026/07
|
21
|
23
|
21
|
15
|
20
|
18
|
15
|
23
|
28
|
39
|
40
|
33
|
19
|
15
|
18
|
21
|
20
|
22
|
29
|
29
|
38
|
47
|
47
|
60
|
38
|
16
|
13
|
17
|
29
|
43
|
41
|
|
2026/06
|
59
|
62
|
43
|
37
|
35
|
45
|
38
|
26
|
25
|
31
|
30
|
42
|
30
|
21
|
19
|
19
|
14
|
18
|
19
|
25
|
33
|
36
|
42
|
48
|
29
|
21
|
23
|
29
|
23
|
16
|
|
|
2026/05
|
37
|
42
|
38
|
22
|
34
|
41
|
39
|
50
|
29
|
40
|
38
|
60
|
48
|
17
|
18
|
25
|
36
|
35
|
36
|
34
|
39
|
30
|
33
|
36
|
31
|
30
|
37
|
44
|
50
|
56
|
59
|
|
2026/04
|
33
|
35
|
34
|
25
|
36
|
41
|
40
|
43
|
43
|
38
|
37
|
33
|
34
|
37
|
56
|
36
|
48
|
45
|
45
|
51
|
42
|
35
|
35
|
21
|
30
|
57
|
62
|
57
|
29
|
24
|
|
|
2026/03
|
15
|
38
|
23
|
31
|
31
|
35
|
46
|
45
|
45
|
39
|
53
|
56
|
45
|
50
|
46
|
41
|
46
|
45
|
42
|
48
|
47
|
48
|
49
|
40
|
53
|
41
|
50
|
39
|
48
|
67
|
39
|
|
2026/02
|
25
|
43
|
47
|
54
|
57
|
53
|
32
|
39
|
38
|
45
|
47
|
48
|
49
|
39
|
29
|
48
|
67
|
41
|
40
|
45
|
49
|
57
|
51
|
67
|
46
|
32
|
41
|
12
|
|||
|
2026/01
|
27
|
25
|
40
|
49
|
47
|
30
|
43
|
56
|
55
|
61
|
62
|
62
|
61
|
62
|
69
|
69
|
64
|
69
|
62
|
42
|
38
|
41
|
33
|
40
|
40
|
52
|
48
|
38
|
41
|
48
|
34
|
|
2025/12
|
47
|
51
|
44
|
47
|
46
|
44
|
50
|
53
|
50
|
46
|
48
|
53
|
38
|
34
|
51
|
51
|
56
|
58
|
65
|
54
|
63
|
33
|
41
|
52
|
24
|
29
|
33
|
42
|
46
|
49
|
51
|
|
2025/11
|
28
|
46
|
40
|
15
|
16
|
25
|
38
|
39
|
47
|
22
|
27
|
10
|
12
|
30
|
45
|
50
|
45
|
39
|
23
|
37
|
44
|
52
|
53
|
53
|
41
|
66
|
58
|
69
|
75
|
58
|
|
|
2025/10
|
43
|
28
|
36
|
37
|
30
|
28
|
36
|
34
|
33
|
33
|
34
|
37
|
32
|
36
|
28
|
34
|
39
|
33
|
25
|
18
|
12
|
13
|
22
|
24
|
25
|
37
|
46
|
35
|
20
|
35
|
40
|
|
2025/09
|
35
|
27
|
30
|
34
|
35
|
26
|
14
|
12
|
14
|
20
|
22
|
31
|
30
|
33
|
30
|
28
|
25
|
19
|
18
|
10
|
19
|
19
|
15
|
12
|
20
|
23
|
27
|
29
|
37
|
46
|
|
|
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