Air Quality
Excellent
No health implications.
9
PM2.5
13
PM10
40
O3
0.4
CO
5
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Oct
37
Excellent
Sun
26 Oct
38
Excellent
Mon
27 Oct
37
Excellent
Tue
28 Oct
41
Excellent
Wed
29 Oct
37
Excellent
Thu
30 Oct
42
Excellent
Fri
31 Oct
27
Excellent
Yanshan Air quality rank
Air quality in the last 12 months (Yanshan)
|
2025/08
|
21
|
31
|
23
|
22
|
28
|
34
|
16
|
16
|
17
|
21
|
19
|
23
|
27
|
42
|
27
|
13
|
13
|
26
|
19
|
16
|
15
|
15
|
15
|
18
|
21
|
13
|
15
|
13
|
16
|
18
|
19
|
|
2025/07
|
13
|
12
|
12
|
12
|
16
|
22
|
22
|
22
|
24
|
19
|
21
|
25
|
23
|
25
|
18
|
19
|
17
|
28
|
21
|
25
|
21
|
15
|
11
|
10
|
11
|
13
|
18
|
28
|
33
|
28
|
20
|
|
2025/06
|
19
|
23
|
20
|
21
|
19
|
29
|
29
|
24
|
24
|
29
|
39
|
25
|
29
|
30
|
21
|
17
|
17
|
15
|
16
|
15
|
17
|
13
|
13
|
13
|
13
|
14
|
13
|
20
|
12
|
13
|
|
|
2025/05
|
37
|
43
|
29
|
18
|
28
|
33
|
39
|
41
|
40
|
21
|
18
|
21
|
28
|
41
|
24
|
19
|
20
|
19
|
18
|
18
|
26
|
27
|
34
|
38
|
24
|
16
|
16
|
15
|
14
|
13
|
12
|
|
2025/04
|
38
|
61
|
67
|
86
|
94
|
31
|
38
|
49
|
52
|
57
|
56
|
58
|
98
|
85
|
60
|
45
|
44
|
35
|
35
|
39
|
32
|
27
|
43
|
50
|
35
|
43
|
55
|
35
|
32
|
34
|
|
|
2025/03
|
35
|
39
|
55
|
63
|
81
|
43
|
46
|
43
|
44
|
35
|
44
|
46
|
44
|
52
|
57
|
27
|
31
|
19
|
32
|
42
|
56
|
80
|
82
|
73
|
61
|
56
|
62
|
83
|
85
|
38
|
26
|
|
2025/02
|
44
|
47
|
20
|
32
|
62
|
46
|
22
|
24
|
22
|
31
|
36
|
53
|
37
|
37
|
47
|
47
|
26
|
22
|
25
|
27
|
22
|
22
|
22
|
13
|
19
|
16
|
24
|
35
|
|||
|
2025/01
|
53
|
57
|
84
|
87
|
65
|
93
|
113
|
98
|
64
|
25
|
38
|
51
|
54
|
70
|
75
|
90
|
92
|
108
|
77
|
64
|
92
|
105
|
55
|
35
|
42
|
23
|
41
|
50
|
65
|
44
|
46
|
|
2024/12
|
44
|
59
|
48
|
46
|
44
|
20
|
23
|
20
|
16
|
26
|
36
|
29
|
34
|
36
|
74
|
72
|
51
|
51
|
70
|
77
|
79
|
78
|
79
|
72
|
80
|
92
|
74
|
44
|
46
|
59
|
41
|
|
2024/11
|
33
|
45
|
47
|
39
|
45
|
53
|
50
|
59
|
52
|
54
|
49
|
42
|
45
|
49
|
41
|
39
|
50
|
53
|
61
|
38
|
42
|
42
|
38
|
45
|
46
|
35
|
19
|
23
|
44
|
49
|
|
|
2024/10
|
12
|
16
|
28
|
26
|
31
|
36
|
43
|
59
|
43
|
38
|
42
|
48
|
60
|
38
|
30
|
13
|
15
|
27
|
33
|
24
|
30
|
29
|
25
|
42
|
42
|
34
|
43
|
49
|
43
|
30
|
32
|
|
2024/09
|
29
|
17
|
29
|
22
|
25
|
34
|
29
|
11
|
9
|
11
|
17
|
19
|
22
|
24
|
29
|
25
|
18
|
22
|
25
|
35
|
30
|
15
|
27
|
34
|
38
|
44
|
44
|
36
|
24
|
18
|
|
|
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