Air Quality
Excellent
No health implications.
21
PM2.5
33
PM10
49
O3
0.6
CO
2
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 Mar
46
Excellent
Sat
15 Mar
55
Good
Sun
16 Mar
54
Good
Mon
17 Mar
53
Good
Tue
18 Mar
57
Good
Wed
19 Mar
41
Excellent
Thu
20 Mar
17
Excellent
Air quality in the last 12 months (Changtai)
|
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
|
|
2024/02
|
51
|
36
|
33
|
22
|
27
|
22
|
18
|
18
|
44
|
88
|
47
|
44
|
49
|
47
|
46
|
35
|
40
|
70
|
42
|
32
|
22
|
33
|
25
|
35
|
50
|
41
|
32
|
48
|
50
|
||
|
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