Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
47
*
PM2.5
63
PM10
46
O3
1.2
CO
8
SO2
33
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
20 Apr
65
Good
Mon
21 Apr
68
Good
Tue
22 Apr
62
Good
Wed
23 Apr
64
Good
Thu
24 Apr
58
Good
Fri
25 Apr
56
Good
Sat
26 Apr
44
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