Air Quality
Excellent
No health implications.
24
PM2.5
29
PM10
104
O3
0.4
CO
7
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Feb
37
Excellent
Sun
1 Mar
42
Excellent
Mon
2 Mar
36
Excellent
Tue
3 Mar
85
Good
Wed
4 Mar
39
Excellent
Thu
5 Mar
34
Excellent
Fri
6 Mar
37
Excellent
Air quality in the last 12 months (Yanshan)
|
2026/01
|
54
|
20
|
15
|
18
|
18
|
18
|
38
|
60
|
41
|
43
|
66
|
70
|
86
|
72
|
80
|
50
|
48
|
46
|
51
|
46
|
43
|
26
|
23
|
21
|
29
|
31
|
30
|
35
|
40
|
40
|
42
|
|
2025/12
|
51
|
60
|
67
|
56
|
46
|
38
|
40
|
47
|
43
|
44
|
46
|
46
|
44
|
34
|
31
|
38
|
41
|
25
|
26
|
44
|
49
|
39
|
39
|
37
|
33
|
36
|
35
|
37
|
34
|
40
|
38
|
|
2025/11
|
17
|
12
|
11
|
15
|
14
|
16
|
17
|
13
|
11
|
10
|
18
|
28
|
31
|
29
|
30
|
36
|
32
|
15
|
18
|
35
|
43
|
44
|
36
|
41
|
47
|
52
|
48
|
48
|
48
|
48
|
|
|
2025/10
|
11
|
14
|
18
|
18
|
22
|
18
|
10
|
13
|
15
|
21
|
28
|
32
|
33
|
25
|
14
|
12
|
18
|
23
|
28
|
27
|
17
|
17
|
23
|
26
|
14
|
16
|
19
|
20
|
25
|
24
|
29
|
|
2025/09
|
17
|
17
|
18
|
22
|
25
|
24
|
28
|
28
|
19
|
15
|
14
|
13
|
13
|
19
|
21
|
18
|
19
|
14
|
16
|
20
|
25
|
29
|
18
|
15
|
17
|
10
|
12
|
21
|
12
|
10
|
|
|
2025/08
|
21
|
31
|
23
|
22
|
28
|
34
|
16
|
16
|
17
|
21
|
19
|
23
|
27
|
42
|
27
|
13
|
13
|
26
|
19
|
16
|
15
|
15
|
15
|
18
|
21
|
13
|
15
|
13
|
16
|
18
|
19
|
|
2025/07
|
13
|
12
|
12
|
12
|
16
|
22
|
22
|
22
|
24
|
19
|
21
|
25
|
23
|
25
|
18
|
19
|
17
|
28
|
21
|
25
|
21
|
15
|
11
|
10
|
11
|
13
|
18
|
28
|
33
|
28
|
20
|
|
2025/06
|
19
|
23
|
20
|
21
|
19
|
29
|
29
|
24
|
24
|
29
|
39
|
25
|
29
|
30
|
21
|
17
|
17
|
15
|
16
|
15
|
17
|
13
|
13
|
13
|
13
|
14
|
13
|
20
|
12
|
13
|
|
|
2025/05
|
37
|
43
|
29
|
18
|
28
|
33
|
39
|
41
|
40
|
21
|
18
|
21
|
28
|
41
|
24
|
19
|
20
|
19
|
18
|
18
|
26
|
27
|
34
|
38
|
24
|
16
|
16
|
15
|
14
|
13
|
12
|
|
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
|
|||
|
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