Air Quality
Excellent
No health implications.
5
PM2.5
9
PM10
25
O3
0.6
CO
4
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
24 Feb
37
Excellent
Tue
25 Feb
34
Excellent
Wed
26 Feb
33
Excellent
Thu
27 Feb
41
Excellent
Fri
28 Feb
40
Excellent
Sat
1 Mar
43
Excellent
Sun
2 Mar
38
Excellent
Air quality in the last 12 months (Yanshan)
|
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
|
|
2024/04
|
60
|
56
|
69
|
80
|
84
|
91
|
79
|
53
|
36
|
47
|
52
|
61
|
71
|
60
|
88
|
101
|
89
|
53
|
59
|
44
|
45
|
54
|
50
|
49
|
45
|
51
|
58
|
65
|
71
|
59
|
|
|
2024/03
|
22
|
24
|
36
|
60
|
39
|
48
|
95
|
67
|
46
|
30
|
32
|
45
|
55
|
53
|
59
|
70
|
98
|
84
|
41
|
46
|
42
|
43
|
39
|
49
|
55
|
62
|
63
|
63
|
42
|
67
|
70
|
|
2024/02
|
31
|
36
|
49
|
47
|
47
|
51
|
54
|
50
|
38
|
70
|
63
|
39
|
50
|
45
|
54
|
42
|
47
|
44
|
44
|
47
|
49
|
63
|
63
|
38
|
26
|
35
|
30
|
35
|
27
|
||
|
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