Air Quality
Excellent
No health implications.
12
PM2.5
30
PM10
51
O3
0.9
CO
5
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Mar
43
Excellent
Sat
28 Mar
41
Excellent
Sun
29 Mar
34
Excellent
Mon
30 Mar
33
Excellent
Tue
31 Mar
31
Excellent
Wed
1 Apr
36
Excellent
Thu
2 Apr
29
Excellent
Air quality in the last 12 months (Yanshan)
|
2026/02
|
52
|
53
|
74
|
122
|
132
|
79
|
52
|
38
|
59
|
46
|
27
|
38
|
45
|
60
|
54
|
37
|
37
|
54
|
71
|
40
|
71
|
91
|
82
|
51
|
40
|
61
|
18
|
20
|
|||
|
2026/01
|
30
|
21
|
39
|
60
|
20
|
41
|
45
|
48
|
52
|
55
|
60
|
80
|
93
|
92
|
93
|
108
|
93
|
81
|
59
|
11
|
22
|
26
|
40
|
57
|
93
|
49
|
36
|
60
|
65
|
42
|
23
|
|
2025/12
|
65
|
69
|
90
|
72
|
65
|
78
|
92
|
72
|
76
|
100
|
86
|
67
|
26
|
41
|
49
|
56
|
55
|
66
|
65
|
65
|
73
|
92
|
81
|
15
|
44
|
55
|
55
|
59
|
65
|
62
|
84
|
|
2025/11
|
35
|
26
|
12
|
11
|
16
|
30
|
33
|
10
|
8
|
10
|
12
|
46
|
28
|
37
|
46
|
52
|
59
|
25
|
26
|
29
|
31
|
42
|
56
|
57
|
50
|
50
|
60
|
71
|
64
|
61
|
|
|
2025/10
|
31
|
28
|
26
|
25
|
23
|
12
|
16
|
29
|
31
|
32
|
38
|
47
|
37
|
44
|
35
|
29
|
44
|
20
|
9
|
8
|
11
|
14
|
26
|
33
|
41
|
55
|
44
|
48
|
56
|
61
|
49
|
|
2025/09
|
25
|
22
|
20
|
23
|
23
|
26
|
30
|
26
|
8
|
14
|
17
|
14
|
26
|
27
|
24
|
24
|
17
|
23
|
35
|
21
|
11
|
10
|
15
|
9
|
7
|
9
|
15
|
27
|
30
|
28
|
|
|
2025/08
|
23
|
18
|
16
|
19
|
20
|
9
|
11
|
18
|
29
|
24
|
28
|
32
|
34
|
29
|
8
|
19
|
10
|
12
|
9
|
18
|
19
|
16
|
20
|
24
|
18
|
18
|
22
|
19
|
24
|
13
|
22
|
|
2025/07
|
12
|
10
|
13
|
18
|
24
|
23
|
26
|
24
|
27
|
20
|
17
|
26
|
18
|
17
|
18
|
18
|
21
|
25
|
24
|
20
|
11
|
8
|
10
|
18
|
21
|
25
|
24
|
19
|
27
|
26
|
18
|
|
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
|
|
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