Air Quality
Excellent
No health implications.
3
PM2.5
6
PM10
50
O3
0.6
CO
3
SO2
24
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 May
48
Excellent
Fri
15 May
65
Good
Sat
16 May
65
Good
Sun
17 May
66
Good
Mon
18 May
74
Good
Tue
19 May
70
Good
Wed
20 May
46
Excellent
Air quality in the last 12 months (Changtai)
|
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
|
|
|
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
|
|
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