Air Quality
Excellent
No health implications.
11
PM2.5
12
PM10
28
O3
0.9
CO
6
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
2 Feb
47
Excellent
Mon
3 Feb
43
Excellent
Tue
4 Feb
89
Good
Wed
5 Feb
50
Excellent
Thu
6 Feb
46
Excellent
Fri
7 Feb
17
Excellent
Sat
8 Feb
22
Excellent
Air quality in the last 12 months (Yanshan)
|
2024/12
|
70
|
71
|
68
|
76
|
82
|
22
|
18
|
47
|
93
|
42
|
18
|
54
|
45
|
57
|
35
|
47
|
75
|
51
|
81
|
97
|
89
|
98
|
102
|
97
|
107
|
94
|
83
|
90
|
99
|
128
|
114
|
|
2024/11
|
39
|
70
|
86
|
69
|
60
|
67
|
46
|
43
|
45
|
58
|
61
|
53
|
66
|
60
|
45
|
38
|
31
|
14
|
12
|
14
|
26
|
37
|
33
|
50
|
46
|
20
|
27
|
36
|
40
|
59
|
|
|
2024/10
|
30
|
39
|
53
|
43
|
44
|
45
|
56
|
35
|
42
|
42
|
51
|
52
|
54
|
85
|
28
|
27
|
39
|
36
|
13
|
12
|
22
|
19
|
21
|
25
|
31
|
40
|
20
|
35
|
42
|
44
|
45
|
|
2024/09
|
21
|
16
|
16
|
22
|
40
|
30
|
10
|
11
|
16
|
15
|
22
|
33
|
30
|
32
|
35
|
24
|
29
|
31
|
40
|
31
|
24
|
25
|
30
|
38
|
50
|
37
|
29
|
34
|
35
|
33
|
|
|
2024/08
|
9
|
12
|
15
|
18
|
19
|
18
|
18
|
17
|
20
|
19
|
11
|
11
|
9
|
13
|
27
|
22
|
14
|
23
|
32
|
12
|
12
|
11
|
11
|
16
|
17
|
19
|
28
|
28
|
31
|
28
|
24
|
|
2024/07
|
13
|
16
|
15
|
16
|
14
|
11
|
14
|
16
|
16
|
19
|
17
|
18
|
23
|
13
|
11
|
13
|
10
|
10
|
9
|
14
|
16
|
12
|
11
|
16
|
21
|
28
|
34
|
9
|
11
|
8
|
8
|
|
2024/06
|
13
|
11
|
31
|
13
|
8
|
14
|
19
|
26
|
24
|
24
|
10
|
17
|
10
|
15
|
10
|
9
|
10
|
9
|
10
|
15
|
15
|
13
|
16
|
9
|
10
|
12
|
9
|
12
|
13
|
7
|
|
|
2024/05
|
10
|
21
|
18
|
24
|
11
|
22
|
26
|
48
|
43
|
41
|
23
|
30
|
56
|
44
|
41
|
47
|
51
|
49
|
10
|
18
|
17
|
35
|
31
|
27
|
28
|
14
|
14
|
21
|
32
|
31
|
8
|
|
2024/04
|
45
|
61
|
49
|
12
|
11
|
11
|
10
|
17
|
31
|
41
|
56
|
55
|
43
|
48
|
53
|
53
|
28
|
17
|
21
|
14
|
15
|
22
|
30
|
38
|
42
|
20
|
18
|
31
|
44
|
15
|
|
|
2024/03
|
53
|
43
|
46
|
39
|
28
|
55
|
40
|
47
|
53
|
43
|
23
|
38
|
34
|
36
|
22
|
30
|
51
|
14
|
34
|
73
|
73
|
51
|
32
|
40
|
30
|
20
|
60
|
30
|
31
|
53
|
35
|
|
2024/02
|
42
|
15
|
13
|
12
|
20
|
17
|
20
|
32
|
54
|
88
|
68
|
58
|
45
|
40
|
37
|
28
|
58
|
33
|
38
|
42
|
29
|
15
|
18
|
18
|
19
|
17
|
29
|
20
|
24
|
||
|
2024/01
|
116
|
28
|
37
|
51
|
77
|
82
|
67
|
23
|
28
|
63
|
67
|
77
|
78
|
70
|
88
|
125
|
103
|
92
|
27
|
14
|
25
|
26
|
40
|
36
|
37
|
47
|
46
|
64
|
43
|
27
|
34
|
|
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