Air Quality
Excellent
No health implications.
10
PM2.5
25
PM10
33
O3
0.5
CO
6
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
6 Sep
53
Good
Sun
7 Sep
49
Excellent
Mon
8 Sep
50
Excellent
Tue
9 Sep
49
Excellent
Wed
10 Sep
52
Good
Thu
11 Sep
41
Excellent
Fri
12 Sep
25
Excellent
Air quality in the last 12 months (Yanyuan)
|
2025/08
|
33
|
37
|
24
|
33
|
28
|
29
|
33
|
25
|
25
|
27
|
23
|
17
|
23
|
32
|
33
|
27
|
22
|
26
|
22
|
23
|
25
|
16
|
21
|
17
|
21
|
28
|
29
|
29
|
21
|
30
|
24
|
|
2025/07
|
30
|
24
|
24
|
19
|
19
|
19
|
26
|
25
|
19
|
27
|
26
|
21
|
28
|
31
|
31
|
35
|
36
|
40
|
21
|
26
|
22
|
27
|
25
|
24
|
21
|
21
|
27
|
21
|
29
|
32
|
20
|
|
2025/06
|
23
|
21
|
15
|
30
|
33
|
38
|
32
|
26
|
27
|
35
|
38
|
38
|
42
|
42
|
24
|
28
|
20
|
21
|
21
|
18
|
15
|
21
|
30
|
21
|
18
|
29
|
21
|
32
|
25
|
20
|
|
|
2025/05
|
34
|
29
|
28
|
22
|
25
|
23
|
22
|
27
|
30
|
32
|
31
|
36
|
31
|
26
|
27
|
28
|
21
|
31
|
31
|
25
|
27
|
33
|
31
|
27
|
34
|
32
|
21
|
16
|
21
|
23
|
18
|
|
2025/04
|
43
|
52
|
55
|
53
|
30
|
41
|
42
|
50
|
50
|
48
|
36
|
27
|
24
|
33
|
36
|
33
|
30
|
27
|
32
|
23
|
25
|
28
|
23
|
27
|
26
|
48
|
44
|
35
|
40
|
26
|
|
|
2025/03
|
40
|
39
|
28
|
40
|
35
|
27
|
37
|
54
|
52
|
49
|
45
|
49
|
61
|
50
|
34
|
26
|
23
|
17
|
30
|
45
|
58
|
62
|
41
|
30
|
31
|
30
|
33
|
56
|
62
|
60
|
54
|
|
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
|
|
|
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