Air Quality
Excellent
No health implications.
4
PM2.5
49
PM10
54
O3
0.2
CO
5
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 Jun
31
Excellent
Mon
2 Jun
30
Excellent
Tue
3 Jun
36
Excellent
Wed
4 Jun
33
Excellent
Thu
5 Jun
39
Excellent
Fri
6 Jun
33
Excellent
Sat
7 Jun
36
Excellent
Air quality in the last 12 months (Yanshan)
|
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
|
|
|
2024/08
|
12
|
14
|
12
|
12
|
12
|
15
|
16
|
16
|
14
|
19
|
23
|
34
|
29
|
37
|
45
|
33
|
35
|
46
|
29
|
32
|
20
|
12
|
11
|
17
|
14
|
13
|
15
|
23
|
29
|
25
|
22
|
|
2024/07
|
13
|
16
|
10
|
14
|
16
|
16
|
14
|
16
|
16
|
14
|
11
|
15
|
16
|
13
|
15
|
15
|
13
|
12
|
10
|
11
|
12
|
16
|
23
|
16
|
16
|
23
|
27
|
21
|
12
|
10
|
16
|
|
2024/06
|
22
|
23
|
20
|
22
|
11
|
11
|
12
|
12
|
12
|
14
|
15
|
17
|
15
|
15
|
16
|
15
|
23
|
26
|
28
|
26
|
20
|
22
|
21
|
17
|
23
|
11
|
10
|
14
|
13
|
14
|
|
|
2024/05
|
71
|
50
|
32
|
48
|
42
|
33
|
36
|
34
|
12
|
17
|
26
|
32
|
23
|
22
|
24
|
14
|
28
|
28
|
22
|
23
|
32
|
30
|
31
|
27
|
28
|
12
|
15
|
15
|
18
|
23
|
17
|
|
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