Air Quality
Excellent
No health implications.
13
PM2.5
17
PM10
108
O3
0.4
CO
5
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Jun
78
Good
Fri
20 Jun
75
Good
Sat
21 Jun
117
Light
Sun
22 Jun
147
Light
Mon
23 Jun
157
Moderate
Tue
24 Jun
160
Moderate
Wed
25 Jun
19
Excellent
Air quality in the last 12 months (Yanshan)
|
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
|
|
2024/11
|
68
|
83
|
99
|
37
|
46
|
59
|
63
|
64
|
67
|
86
|
93
|
122
|
120
|
57
|
71
|
73
|
50
|
47
|
52
|
75
|
80
|
50
|
45
|
64
|
49
|
29
|
36
|
47
|
57
|
69
|
|
|
2024/10
|
22
|
23
|
42
|
58
|
75
|
90
|
40
|
55
|
92
|
73
|
66
|
88
|
107
|
137
|
113
|
48
|
99
|
19
|
31
|
35
|
53
|
61
|
62
|
86
|
114
|
147
|
97
|
47
|
105
|
165
|
166
|
|
2024/09
|
44
|
23
|
25
|
49
|
35
|
29
|
33
|
46
|
60
|
26
|
27
|
35
|
36
|
35
|
28
|
39
|
55
|
33
|
50
|
30
|
17
|
22
|
35
|
54
|
80
|
43
|
37
|
53
|
57
|
22
|
|
|
2024/08
|
32
|
35
|
38
|
21
|
20
|
34
|
45
|
56
|
42
|
58
|
38
|
26
|
34
|
35
|
36
|
37
|
42
|
33
|
17
|
25
|
30
|
44
|
54
|
36
|
41
|
28
|
21
|
38
|
37
|
51
|
52
|
|
2024/07
|
50
|
54
|
43
|
49
|
38
|
18
|
42
|
37
|
51
|
55
|
62
|
65
|
90
|
68
|
40
|
45
|
42
|
44
|
34
|
19
|
33
|
29
|
42
|
50
|
20
|
20
|
18
|
21
|
17
|
21
|
24
|
|
2024/06
|
38
|
66
|
59
|
52
|
61
|
67
|
61
|
63
|
70
|
82
|
86
|
71
|
69
|
48
|
50
|
40
|
48
|
51
|
52
|
47
|
48
|
61
|
98
|
67
|
49
|
72
|
49
|
59
|
58
|
54
|
|
|
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