Air Quality
Excellent
No health implications.
20
PM2.5
30
PM10
50
O3
0.7
CO
9
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
31 Aug
55
Good
Mon
1 Sep
54
Good
Tue
2 Sep
47
Excellent
Wed
3 Sep
49
Excellent
Thu
4 Sep
50
Excellent
Fri
5 Sep
17
Excellent
Sat
6 Sep
31
Excellent
Air quality in the last 12 months (Yongfeng)
|
2025/06
|
22
|
18
|
27
|
33
|
33
|
30
|
32
|
25
|
26
|
30
|
24
|
26
|
36
|
19
|
17
|
22
|
15
|
16
|
19
|
15
|
17
|
17
|
22
|
23
|
31
|
30
|
16
|
19
|
21
|
22
|
|
|
2025/05
|
49
|
51
|
53
|
48
|
25
|
34
|
56
|
37
|
23
|
42
|
36
|
38
|
37
|
37
|
39
|
21
|
26
|
20
|
22
|
20
|
22
|
26
|
22
|
51
|
57
|
54
|
51
|
29
|
27
|
26
|
25
|
|
2025/04
|
48
|
71
|
54
|
62
|
58
|
59
|
57
|
60
|
59
|
50
|
42
|
127
|
149
|
109
|
69
|
54
|
66
|
60
|
24
|
23
|
33
|
22
|
35
|
37
|
28
|
25
|
20
|
38
|
53
|
52
|
|
|
2025/03
|
36
|
29
|
36
|
21
|
32
|
41
|
47
|
43
|
52
|
38
|
48
|
53
|
29
|
21
|
19
|
36
|
48
|
41
|
46
|
38
|
44
|
49
|
53
|
59
|
66
|
65
|
56
|
72
|
48
|
32
|
41
|
|
2025/02
|
35
|
23
|
45
|
56
|
53
|
61
|
59
|
51
|
37
|
50
|
68
|
75
|
83
|
76
|
59
|
43
|
53
|
50
|
43
|
25
|
33
|
23
|
38
|
51
|
70
|
74
|
60
|
44
|
|||
|
2025/01
|
117
|
88
|
99
|
115
|
127
|
112
|
71
|
63
|
61
|
43
|
51
|
58
|
70
|
62
|
69
|
58
|
55
|
66
|
68
|
74
|
76
|
72
|
61
|
102
|
53
|
22
|
51
|
70
|
138
|
71
|
58
|
|
2024/12
|
50
|
60
|
63
|
86
|
67
|
47
|
50
|
74
|
57
|
63
|
37
|
62
|
67
|
59
|
56
|
57
|
60
|
69
|
66
|
69
|
80
|
79
|
63
|
79
|
90
|
81
|
102
|
86
|
75
|
85
|
92
|
|
2024/11
|
33
|
40
|
51
|
60
|
61
|
51
|
48
|
48
|
54
|
49
|
49
|
49
|
54
|
59
|
30
|
35
|
39
|
25
|
36
|
46
|
39
|
33
|
54
|
63
|
50
|
32
|
43
|
44
|
47
|
49
|
|
|
2024/10
|
40
|
41
|
39
|
35
|
41
|
44
|
40
|
23
|
33
|
46
|
59
|
56
|
63
|
79
|
69
|
33
|
37
|
48
|
32
|
32
|
42
|
44
|
36
|
46
|
52
|
52
|
27
|
27
|
54
|
53
|
45
|
|
2024/09
|
45
|
50
|
49
|
44
|
45
|
34
|
25
|
28
|
30
|
36
|
41
|
31
|
41
|
42
|
41
|
37
|
36
|
42
|
37
|
25
|
31
|
35
|
35
|
36
|
39
|
37
|
48
|
44
|
37
|
37
|
|
|
2024/08
|
23
|
27
|
30
|
40
|
29
|
31
|
31
|
31
|
34
|
40
|
35
|
26
|
26
|
28
|
34
|
32
|
26
|
21
|
25
|
33
|
27
|
21
|
31
|
34
|
35
|
35
|
39
|
26
|
29
|
41
|
43
|
|
2024/07
|
26
|
25
|
23
|
26
|
29
|
28
|
24
|
25
|
33
|
34
|
36
|
31
|
31
|
25
|
28
|
28
|
22
|
23
|
22
|
21
|
23
|
29
|
33
|
44
|
41
|
23
|
17
|
16
|
16
|
19
|
21
|
|
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