Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
28
PM2.5
55
*
PM10
84
O3
0.7
CO
12
SO2
26
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
3 Apr
74
Good
Fri
4 Apr
64
Good
Sat
5 Apr
60
Good
Sun
6 Apr
73
Good
Mon
7 Apr
87
Good
Tue
8 Apr
90
Good
Wed
9 Apr
47
Excellent
Air quality in the last 12 months (Yanshan)
|
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
|
|
|
2024/05
|
52
|
58
|
60
|
54
|
48
|
62
|
79
|
66
|
64
|
61
|
230
|
55
|
70
|
84
|
37
|
58
|
66
|
76
|
63
|
27
|
42
|
57
|
57
|
39
|
51
|
46
|
46
|
33
|
56
|
57
|
43
|
|
2024/04
|
73
|
59
|
44
|
51
|
64
|
73
|
73
|
92
|
53
|
128
|
116
|
61
|
72
|
42
|
116
|
76
|
82
|
93
|
78
|
77
|
79
|
88
|
46
|
53
|
81
|
74
|
71
|
53
|
42
|
48
|
|
|
2024/03
|
39
|
92
|
81
|
82
|
61
|
80
|
89
|
31
|
59
|
93
|
140
|
111
|
89
|
106
|
77
|
87
|
84
|
97
|
121
|
51
|
84
|
81
|
78
|
62
|
49
|
70
|
61
|
305
|
153
|
89
|
85
|
|
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