Air Quality
Excellent
No health implications.
18
PM2.5
23
PM10
45
O3
0.6
CO
8
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Mar
42
Excellent
Thu
20 Mar
46
Excellent
Fri
21 Mar
48
Excellent
Sat
22 Mar
47
Excellent
Sun
23 Mar
48
Excellent
Mon
24 Mar
21
Excellent
Tue
25 Mar
45
Excellent
Air quality in the last 12 months (Yanyuan)
|
2025/02
|
40
|
35
|
23
|
38
|
49
|
36
|
29
|
30
|
32
|
34
|
28
|
30
|
37
|
38
|
26
|
38
|
30
|
36
|
35
|
29
|
33
|
34
|
32
|
37
|
33
|
30
|
31
|
33
|
|||
|
2025/01
|
54
|
49
|
53
|
54
|
50
|
56
|
45
|
31
|
35
|
38
|
28
|
43
|
46
|
42
|
44
|
60
|
51
|
55
|
53
|
58
|
56
|
51
|
53
|
48
|
32
|
26
|
38
|
45
|
34
|
42
|
34
|
|
2024/12
|
43
|
42
|
41
|
46
|
42
|
41
|
39
|
40
|
37
|
39
|
44
|
51
|
41
|
36
|
40
|
53
|
53
|
49
|
43
|
45
|
47
|
39
|
43
|
50
|
49
|
53
|
53
|
57
|
56
|
51
|
51
|
|
2024/11
|
37
|
27
|
36
|
31
|
25
|
39
|
25
|
17
|
24
|
32
|
32
|
33
|
31
|
35
|
42
|
45
|
40
|
35
|
38
|
36
|
40
|
29
|
25
|
31
|
33
|
32
|
33
|
33
|
33
|
37
|
|
|
2024/10
|
13
|
22
|
26
|
33
|
24
|
18
|
15
|
20
|
25
|
23
|
27
|
30
|
28
|
24
|
24
|
23
|
27
|
35
|
39
|
34
|
26
|
27
|
31
|
28
|
37
|
28
|
17
|
39
|
45
|
36
|
35
|
|
2024/09
|
24
|
21
|
24
|
24
|
17
|
20
|
26
|
27
|
27
|
17
|
20
|
21
|
29
|
32
|
35
|
19
|
19
|
27
|
36
|
36
|
38
|
31
|
30
|
32
|
28
|
29
|
39
|
26
|
29
|
24
|
|
|
2024/08
|
30
|
42
|
38
|
28
|
28
|
29
|
25
|
26
|
26
|
17
|
32
|
33
|
33
|
41
|
42
|
33
|
31
|
25
|
31
|
28
|
34
|
42
|
41
|
37
|
37
|
34
|
31
|
41
|
40
|
44
|
27
|
|
2024/07
|
27
|
27
|
26
|
20
|
21
|
24
|
22
|
22
|
22
|
28
|
19
|
22
|
27
|
25
|
24
|
26
|
25
|
26
|
24
|
21
|
27
|
31
|
34
|
29
|
22
|
32
|
36
|
33
|
20
|
12
|
27
|
|
2024/06
|
33
|
36
|
27
|
25
|
23
|
31
|
25
|
22
|
19
|
23
|
25
|
20
|
26
|
23
|
23
|
34
|
20
|
22
|
23
|
22
|
33
|
29
|
25
|
17
|
24
|
37
|
31
|
24
|
28
|
31
|
|
|
2024/05
|
37
|
40
|
38
|
34
|
46
|
46
|
44
|
38
|
37
|
36
|
29
|
19
|
26
|
32
|
22
|
32
|
35
|
34
|
29
|
25
|
30
|
33
|
28
|
36
|
33
|
23
|
22
|
31
|
26
|
23
|
24
|
|
2024/04
|
19
|
34
|
41
|
38
|
36
|
42
|
36
|
36
|
39
|
38
|
33
|
42
|
38
|
47
|
48
|
54
|
51
|
38
|
40
|
33
|
22
|
34
|
41
|
33
|
31
|
39
|
34
|
46
|
32
|
40
|
|
|
2024/03
|
30
|
37
|
35
|
35
|
25
|
27
|
31
|
28
|
29
|
37
|
41
|
54
|
50
|
41
|
40
|
38
|
42
|
39
|
50
|
59
|
51
|
31
|
20
|
26
|
33
|
43
|
28
|
29
|
36
|
35
|
33
|
|
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