Air Quality
Excellent
No health implications.
5
PM2.5
12
PM10
55
O3
0.5
CO
6
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Aug
40
Excellent
Wed
20 Aug
35
Excellent
Thu
21 Aug
33
Excellent
Fri
22 Aug
39
Excellent
Sat
23 Aug
46
Excellent
Sun
24 Aug
39
Excellent
Mon
25 Aug
47
Excellent
Air quality in the last 12 months (Yanshan)
|
2025/06
|
19
|
14
|
22
|
40
|
40
|
30
|
23
|
19
|
10
|
15
|
26
|
18
|
17
|
10
|
15
|
17
|
10
|
7
|
10
|
14
|
11
|
12
|
15
|
15
|
18
|
17
|
14
|
12
|
9
|
12
|
|
|
2025/05
|
41
|
55
|
42
|
23
|
25
|
27
|
30
|
23
|
18
|
38
|
28
|
32
|
38
|
56
|
38
|
13
|
15
|
8
|
8
|
13
|
15
|
16
|
15
|
38
|
43
|
29
|
27
|
21
|
12
|
20
|
21
|
|
2025/04
|
41
|
54
|
70
|
120
|
132
|
75
|
101
|
124
|
123
|
72
|
48
|
144
|
334
|
141
|
84
|
81
|
83
|
79
|
56
|
21
|
33
|
24
|
43
|
21
|
15
|
25
|
21
|
25
|
43
|
46
|
|
|
2025/03
|
42
|
39
|
55
|
13
|
14
|
21
|
43
|
43
|
32
|
16
|
34
|
45
|
24
|
15
|
10
|
38
|
33
|
29
|
43
|
49
|
52
|
70
|
79
|
85
|
86
|
66
|
62
|
69
|
11
|
15
|
22
|
|
2025/02
|
13
|
14
|
29
|
59
|
58
|
42
|
29
|
68
|
35
|
52
|
112
|
91
|
74
|
96
|
70
|
26
|
30
|
33
|
19
|
11
|
22
|
14
|
19
|
69
|
69
|
49
|
28
|
46
|
|||
|
2025/01
|
93
|
96
|
86
|
109
|
131
|
96
|
77
|
82
|
49
|
49
|
53
|
69
|
86
|
73
|
63
|
61
|
68
|
81
|
86
|
84
|
95
|
104
|
98
|
130
|
109
|
20
|
49
|
55
|
94
|
90
|
46
|
|
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
|
|
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