Air Quality
Excellent
No health implications.
3
PM2.5
7
PM10
22
O3
0.8
CO
3
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Dec
46
Excellent
Fri
26 Dec
41
Excellent
Sat
27 Dec
47
Excellent
Sun
28 Dec
51
Good
Mon
29 Dec
51
Good
Tue
30 Dec
45
Excellent
Wed
31 Dec
23
Excellent
Changtai Air quality rank
Air quality in the last 12 months (Changtai)
|
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
|
|
|
2025/08
|
24
|
26
|
19
|
14
|
14
|
24
|
31
|
36
|
25
|
14
|
14
|
24
|
21
|
12
|
18
|
20
|
24
|
20
|
17
|
18
|
24
|
21
|
28
|
25
|
27
|
18
|
17
|
24
|
22
|
25
|
31
|
|
2025/07
|
31
|
25
|
29
|
31
|
13
|
22
|
29
|
34
|
35
|
14
|
10
|
22
|
35
|
23
|
29
|
34
|
37
|
25
|
20
|
17
|
10
|
13
|
17
|
20
|
21
|
19
|
22
|
18
|
21
|
20
|
16
|
|
2025/06
|
39
|
25
|
13
|
24
|
32
|
35
|
34
|
41
|
23
|
26
|
32
|
26
|
19
|
17
|
15
|
21
|
21
|
26
|
17
|
14
|
15
|
19
|
21
|
26
|
20
|
14
|
17
|
17
|
18
|
23
|
|
|
2025/05
|
62
|
49
|
48
|
51
|
36
|
36
|
36
|
62
|
40
|
26
|
27
|
38
|
45
|
42
|
33
|
18
|
18
|
26
|
27
|
29
|
26
|
33
|
30
|
19
|
43
|
46
|
38
|
36
|
11
|
22
|
45
|
|
2025/04
|
19
|
39
|
48
|
59
|
49
|
50
|
56
|
62
|
77
|
42
|
45
|
42
|
120
|
83
|
86
|
70
|
59
|
57
|
50
|
45
|
48
|
38
|
32
|
33
|
22
|
14
|
33
|
39
|
37
|
47
|
|
|
2025/03
|
64
|
32
|
31
|
32
|
13
|
13
|
22
|
34
|
39
|
43
|
54
|
54
|
32
|
37
|
39
|
8
|
45
|
48
|
45
|
48
|
52
|
53
|
62
|
71
|
81
|
60
|
48
|
54
|
20
|
11
|
11
|
|
2025/02
|
48
|
22
|
14
|
31
|
58
|
58
|
15
|
40
|
41
|
39
|
42
|
56
|
43
|
35
|
42
|
65
|
49
|
59
|
31
|
36
|
23
|
21
|
20
|
33
|
47
|
65
|
73
|
66
|
|||
|
2025/01
|
64
|
63
|
59
|
45
|
52
|
58
|
62
|
60
|
59
|
60
|
45
|
46
|
56
|
54
|
73
|
86
|
65
|
53
|
54
|
52
|
60
|
64
|
57
|
37
|
29
|
25
|
19
|
36
|
120
|
40
|
36
|
|
2024/12
|
56
|
63
|
43
|
38
|
44
|
44
|
39
|
28
|
31
|
35
|
42
|
25
|
21
|
38
|
57
|
58
|
55
|
54
|
51
|
40
|
46
|
62
|
61
|
38
|
44
|
53
|
62
|
68
|
64
|
57
|
66
|
|
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