Air Quality
Excellent
No health implications.
15
PM2.5
39
PM10
78
O3
0.3
CO
4
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 Dec
73
Good
Mon
15 Dec
83
Good
Tue
16 Dec
76
Good
Wed
17 Dec
63
Good
Thu
18 Dec
67
Good
Fri
19 Dec
69
Good
Sat
20 Dec
50
Excellent
Yanshan Air quality rank
Air quality in the last 12 months (Yanshan)
|
2025/11
|
35
|
26
|
12
|
11
|
16
|
30
|
33
|
10
|
8
|
10
|
12
|
46
|
28
|
37
|
46
|
52
|
59
|
25
|
26
|
29
|
31
|
42
|
56
|
57
|
50
|
50
|
60
|
71
|
64
|
61
|
|
|
2025/10
|
31
|
28
|
26
|
25
|
23
|
12
|
16
|
29
|
31
|
32
|
38
|
47
|
37
|
44
|
35
|
29
|
44
|
20
|
9
|
8
|
11
|
14
|
26
|
33
|
41
|
55
|
44
|
48
|
56
|
61
|
49
|
|
2025/09
|
25
|
22
|
20
|
23
|
23
|
26
|
30
|
26
|
8
|
14
|
17
|
14
|
26
|
27
|
24
|
24
|
17
|
23
|
35
|
21
|
11
|
10
|
15
|
9
|
7
|
9
|
15
|
27
|
30
|
28
|
|
|
2025/08
|
23
|
18
|
16
|
19
|
20
|
9
|
11
|
18
|
29
|
24
|
28
|
32
|
34
|
29
|
8
|
19
|
10
|
12
|
9
|
18
|
19
|
16
|
20
|
24
|
18
|
18
|
22
|
19
|
24
|
13
|
22
|
|
2025/07
|
12
|
10
|
13
|
18
|
24
|
23
|
26
|
24
|
27
|
20
|
17
|
26
|
18
|
17
|
18
|
18
|
21
|
25
|
24
|
20
|
11
|
8
|
10
|
18
|
21
|
25
|
24
|
19
|
27
|
26
|
18
|
|
2025/06
|
19
|
14
|
22
|
40
|
40
|
30
|
23
|
19
|
10
|
15
|
26
|
18
|
17
|
10
|
15
|
17
|
10
|
7
|
10
|
14
|
11
|
12
|
15
|
15
|
18
|
17
|
14
|
12
|
9
|
12
|
|
|
2025/05
|
41
|
55
|
42
|
23
|
25
|
27
|
30
|
23
|
18
|
38
|
28
|
32
|
38
|
56
|
38
|
13
|
15
|
8
|
8
|
13
|
15
|
16
|
15
|
38
|
43
|
29
|
27
|
21
|
12
|
20
|
21
|
|
2025/04
|
41
|
54
|
70
|
120
|
132
|
75
|
101
|
124
|
123
|
72
|
48
|
144
|
334
|
141
|
84
|
81
|
83
|
79
|
56
|
21
|
33
|
24
|
43
|
21
|
15
|
25
|
21
|
25
|
43
|
46
|
|
|
2025/03
|
42
|
39
|
55
|
13
|
14
|
21
|
43
|
43
|
32
|
16
|
34
|
45
|
24
|
15
|
10
|
38
|
33
|
29
|
43
|
49
|
52
|
70
|
79
|
85
|
86
|
66
|
62
|
69
|
11
|
15
|
22
|
|
2025/02
|
13
|
14
|
29
|
59
|
58
|
42
|
29
|
68
|
35
|
52
|
112
|
91
|
74
|
96
|
70
|
26
|
30
|
33
|
19
|
11
|
22
|
14
|
19
|
69
|
69
|
49
|
28
|
46
|
|||
|
2025/01
|
93
|
96
|
86
|
109
|
131
|
96
|
77
|
82
|
49
|
49
|
53
|
69
|
86
|
73
|
63
|
61
|
68
|
81
|
86
|
84
|
95
|
104
|
98
|
130
|
109
|
20
|
49
|
55
|
94
|
90
|
46
|
|
2024/12
|
70
|
71
|
68
|
76
|
82
|
22
|
18
|
47
|
93
|
42
|
18
|
54
|
45
|
57
|
35
|
47
|
75
|
51
|
81
|
97
|
89
|
98
|
102
|
97
|
107
|
94
|
83
|
90
|
99
|
128
|
114
|
|
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