Air Quality
Heavy
Healthy people will commonly show symptoms. People with respiratory or heart diseases will be significantly affected and will experience reduced endurance in activities.
206
*
PM2.5
234
PM10
42
O3
1.4
CO
9
SO2
58
NO2
Healthy people will commonly show symptoms. People with respiratory or heart diseases will be significantly affected and will experience reduced endurance in activities.
Advise
Children, seniors and individuals with heart or lung diseases should stay indoors and avoid outdoor activities. General population should reduce outdoor activities.
Air Quality
Today
19 Dec
183
Moderate
Sat
20 Dec
76
Good
Sun
21 Dec
65
Good
Mon
22 Dec
103
Light
Tue
23 Dec
82
Good
Wed
24 Dec
70
Good
Thu
25 Dec
20
Excellent
Yanshan Air quality rank
Air quality in the last 12 months (Yanshan)
|
2025/11
|
93
|
29
|
50
|
90
|
99
|
97
|
73
|
86
|
70
|
74
|
90
|
130
|
46
|
79
|
175
|
100
|
35
|
48
|
60
|
51
|
69
|
108
|
117
|
135
|
30
|
102
|
52
|
103
|
151
|
152
|
|
|
2025/10
|
75
|
29
|
20
|
36
|
22
|
23
|
38
|
30
|
12
|
19
|
25
|
29
|
35
|
48
|
68
|
48
|
39
|
25
|
35
|
33
|
45
|
53
|
64
|
69
|
85
|
65
|
59
|
147
|
114
|
102
|
65
|
|
2025/09
|
26
|
32
|
52
|
50
|
45
|
43
|
54
|
57
|
40
|
47
|
58
|
53
|
57
|
63
|
66
|
55
|
29
|
33
|
24
|
33
|
45
|
28
|
38
|
49
|
55
|
48
|
38
|
52
|
62
|
66
|
|
|
2025/08
|
31
|
27
|
37
|
30
|
35
|
34
|
36
|
30
|
23
|
31
|
38
|
38
|
40
|
60
|
40
|
11
|
16
|
22
|
37
|
34
|
26
|
23
|
29
|
22
|
29
|
32
|
39
|
14
|
25
|
20
|
21
|
|
2025/07
|
24
|
28
|
20
|
36
|
36
|
23
|
25
|
29
|
31
|
51
|
47
|
47
|
41
|
24
|
32
|
31
|
34
|
33
|
28
|
45
|
39
|
27
|
15
|
29
|
38
|
33
|
28
|
36
|
26
|
28
|
26
|
|
2025/06
|
60
|
54
|
37
|
32
|
57
|
69
|
67
|
53
|
67
|
34
|
54
|
69
|
67
|
57
|
31
|
25
|
43
|
44
|
29
|
36
|
44
|
49
|
43
|
49
|
57
|
53
|
53
|
64
|
50
|
26
|
|
|
2025/05
|
55
|
60
|
41
|
45
|
62
|
44
|
58
|
68
|
37
|
30
|
52
|
55
|
57
|
54
|
35
|
71
|
64
|
63
|
83
|
70
|
60
|
73
|
61
|
50
|
48
|
56
|
53
|
60
|
61
|
56
|
58
|
|
2025/04
|
67
|
31
|
52
|
78
|
40
|
68
|
87
|
76
|
51
|
72
|
81
|
167
|
55
|
59
|
51
|
78
|
87
|
56
|
37
|
67
|
66
|
77
|
70
|
50
|
64
|
70
|
51
|
54
|
62
|
73
|
|
|
2025/03
|
149
|
73
|
49
|
52
|
78
|
77
|
80
|
110
|
118
|
104
|
108
|
140
|
96
|
64
|
46
|
36
|
48
|
31
|
56
|
58
|
57
|
66
|
101
|
106
|
69
|
98
|
87
|
51
|
39
|
57
|
76
|
|
2025/02
|
54
|
73
|
30
|
27
|
40
|
80
|
37
|
30
|
56
|
79
|
110
|
77
|
92
|
92
|
106
|
66
|
40
|
50
|
53
|
61
|
53
|
60
|
47
|
56
|
67
|
88
|
130
|
176
|
|||
|
2025/01
|
106
|
40
|
60
|
135
|
154
|
36
|
52
|
45
|
38
|
59
|
81
|
68
|
87
|
88
|
43
|
64
|
63
|
119
|
117
|
82
|
103
|
38
|
60
|
79
|
73
|
86
|
32
|
57
|
253
|
66
|
49
|
|
2024/12
|
109
|
43
|
52
|
83
|
103
|
71
|
38
|
58
|
93
|
113
|
48
|
55
|
65
|
55
|
59
|
69
|
62
|
40
|
61
|
87
|
40
|
51
|
72
|
105
|
140
|
43
|
58
|
62
|
79
|
101
|
63
|
|
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