Air Quality
Excellent
No health implications.
9
PM2.5
16
PM10
40
O3
0.5
CO
6
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Apr
69
Good
Thu
1 May
86
Good
Fri
2 May
87
Good
Sat
3 May
81
Good
Sun
4 May
55
Good
Mon
5 May
56
Good
Tue
6 May
38
Excellent
Air quality in the last 12 months (Yanhe)
|
2025/02
|
40
|
29
|
40
|
44
|
54
|
54
|
43
|
65
|
50
|
49
|
49
|
70
|
56
|
36
|
42
|
45
|
37
|
35
|
34
|
37
|
70
|
41
|
46
|
78
|
53
|
41
|
45
|
49
|
|||
|
2025/01
|
90
|
105
|
101
|
106
|
93
|
76
|
60
|
52
|
45
|
58
|
62
|
60
|
67
|
67
|
66
|
67
|
72
|
82
|
74
|
88
|
100
|
137
|
147
|
78
|
28
|
31
|
45
|
71
|
147
|
77
|
57
|
|
2024/12
|
53
|
63
|
76
|
62
|
28
|
40
|
39
|
40
|
43
|
26
|
31
|
50
|
64
|
58
|
51
|
51
|
64
|
72
|
75
|
89
|
102
|
72
|
71
|
71
|
73
|
84
|
80
|
88
|
94
|
99
|
81
|
|
2024/11
|
60
|
46
|
51
|
51
|
48
|
47
|
46
|
42
|
39
|
33
|
37
|
47
|
53
|
47
|
63
|
57
|
19
|
15
|
15
|
16
|
18
|
19
|
35
|
21
|
19
|
19
|
25
|
30
|
33
|
42
|
|
|
2024/10
|
18
|
20
|
29
|
34
|
37
|
46
|
41
|
27
|
36
|
51
|
62
|
60
|
40
|
27
|
28
|
25
|
23
|
25
|
21
|
15
|
18
|
21
|
22
|
25
|
27
|
32
|
44
|
36
|
30
|
32
|
46
|
|
2024/09
|
23
|
29
|
29
|
29
|
38
|
34
|
35
|
30
|
21
|
23
|
26
|
28
|
26
|
20
|
29
|
33
|
25
|
21
|
23
|
29
|
31
|
24
|
28
|
29
|
34
|
39
|
39
|
40
|
52
|
33
|
|
|
2024/08
|
13
|
14
|
17
|
14
|
16
|
16
|
19
|
22
|
24
|
23
|
39
|
44
|
30
|
26
|
29
|
29
|
22
|
17
|
21
|
19
|
19
|
22
|
19
|
17
|
16
|
17
|
19
|
20
|
20
|
20
|
20
|
|
2024/07
|
19
|
22
|
19
|
18
|
25
|
19
|
16
|
22
|
20
|
20
|
20
|
20
|
21
|
22
|
19
|
20
|
20
|
19
|
16
|
15
|
16
|
17
|
18
|
15
|
17
|
26
|
23
|
21
|
15
|
13
|
13
|
|
2024/06
|
25
|
25
|
20
|
20
|
19
|
16
|
19
|
19
|
14
|
14
|
17
|
18
|
21
|
22
|
28
|
26
|
17
|
13
|
15
|
14
|
19
|
22
|
20
|
22
|
21
|
17
|
14
|
13
|
16
|
18
|
|
|
2024/05
|
21
|
21
|
15
|
15
|
22
|
26
|
29
|
37
|
33
|
32
|
25
|
23
|
26
|
30
|
32
|
45
|
44
|
27
|
15
|
22
|
20
|
27
|
24
|
26
|
25
|
26
|
16
|
29
|
23
|
15
|
23
|
|
2024/04
|
30
|
30
|
24
|
29
|
27
|
21
|
21
|
22
|
25
|
33
|
34
|
30
|
25
|
31
|
40
|
31
|
19
|
22
|
18
|
26
|
42
|
38
|
26
|
28
|
22
|
23
|
21
|
19
|
21
|
17
|
|
|
2024/03
|
71
|
62
|
55
|
44
|
37
|
41
|
62
|
51
|
58
|
61
|
56
|
50
|
51
|
45
|
44
|
33
|
29
|
24
|
32
|
50
|
50
|
54
|
43
|
39
|
28
|
21
|
24
|
32
|
31
|
32
|
32
|
|
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