Air Quality
Excellent
No health implications.
13
PM2.5
20
PM10
54
O3
0.4
CO
2
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 Jul
43
Excellent
Sun
13 Jul
58
Good
Mon
14 Jul
59
Good
Tue
15 Jul
61
Good
Wed
16 Jul
62
Good
Thu
17 Jul
62
Good
Fri
18 Jul
25
Excellent
Air quality in the last 12 months (Changtai)
|
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
|
|
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
|
|
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