Air Quality
Excellent
No health implications.
17
PM2.5
35
PM10
3
O3
0.7
CO
6
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
10 May
72
Good
Sun
11 May
71
Good
Mon
12 May
77
Good
Tue
13 May
73
Good
Wed
14 May
67
Good
Thu
15 May
40
Excellent
Fri
16 May
19
Excellent
Air quality in the last 12 months (Changtai)
|
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
|
|
2024/11
|
14
|
16
|
33
|
44
|
43
|
37
|
26
|
26
|
44
|
44
|
34
|
26
|
20
|
33
|
35
|
24
|
27
|
17
|
14
|
9
|
12
|
20
|
26
|
28
|
24
|
15
|
27
|
25
|
36
|
48
|
|
|
2024/10
|
12
|
10
|
16
|
17
|
18
|
23
|
22
|
15
|
26
|
36
|
46
|
41
|
34
|
38
|
33
|
28
|
32
|
44
|
40
|
18
|
27
|
31
|
33
|
32
|
30
|
28
|
38
|
20
|
30
|
40
|
16
|
|
2024/09
|
33
|
40
|
41
|
30
|
25
|
14
|
14
|
20
|
17
|
35
|
47
|
52
|
26
|
30
|
22
|
23
|
24
|
21
|
30
|
19
|
22
|
9
|
10
|
14
|
19
|
27
|
23
|
16
|
21
|
15
|
|
|
2024/08
|
25
|
28
|
36
|
43
|
39
|
39
|
31
|
26
|
30
|
44
|
41
|
34
|
25
|
25
|
21
|
19
|
21
|
20
|
18
|
13
|
16
|
24
|
27
|
31
|
40
|
46
|
36
|
30
|
39
|
31
|
32
|
|
2024/07
|
17
|
17
|
16
|
18
|
16
|
15
|
13
|
16
|
13
|
20
|
24
|
26
|
23
|
23
|
20
|
19
|
18
|
15
|
17
|
21
|
22
|
29
|
35
|
26
|
12
|
7
|
11
|
18
|
21
|
19
|
11
|
|
2024/06
|
10
|
8
|
27
|
25
|
27
|
28
|
25
|
29
|
22
|
21
|
17
|
26
|
29
|
22
|
20
|
20
|
16
|
21
|
16
|
19
|
21
|
28
|
20
|
12
|
16
|
20
|
18
|
16
|
14
|
18
|
|
|
2024/05
|
29
|
21
|
30
|
40
|
25
|
38
|
51
|
49
|
49
|
41
|
46
|
34
|
26
|
31
|
43
|
57
|
52
|
54
|
44
|
20
|
13
|
11
|
22
|
23
|
31
|
18
|
15
|
23
|
29
|
46
|
31
|
|
2024/04
|
32
|
54
|
42
|
45
|
28
|
34
|
20
|
35
|
19
|
40
|
48
|
56
|
69
|
49
|
55
|
51
|
44
|
39
|
42
|
49
|
24
|
34
|
34
|
23
|
38
|
23
|
26
|
16
|
26
|
28
|
|
|
2024/03
|
9
|
26
|
44
|
48
|
63
|
42
|
34
|
62
|
63
|
63
|
39
|
32
|
70
|
66
|
56
|
73
|
62
|
44
|
56
|
57
|
58
|
67
|
70
|
38
|
38
|
46
|
47
|
52
|
52
|
57
|
37
|
|
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