Air Quality
Excellent
No health implications.
4
PM2.5
13
PM10
59
O3
0.4
CO
5
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
11 Aug
40
Excellent
Tue
12 Aug
34
Excellent
Wed
13 Aug
39
Excellent
Thu
14 Aug
41
Excellent
Fri
15 Aug
43
Excellent
Sat
16 Aug
41
Excellent
Sun
17 Aug
17
Excellent
Air quality in the last 12 months (Hefeng)
|
2025/06
|
8
|
16
|
24
|
28
|
29
|
34
|
25
|
18
|
19
|
24
|
29
|
28
|
30
|
26
|
28
|
31
|
25
|
17
|
11
|
12
|
10
|
14
|
15
|
23
|
16
|
14
|
19
|
18
|
16
|
17
|
|
|
2025/05
|
51
|
66
|
60
|
45
|
32
|
66
|
73
|
26
|
23
|
32
|
39
|
39
|
41
|
48
|
37
|
33
|
38
|
49
|
44
|
41
|
37
|
17
|
38
|
52
|
46
|
37
|
39
|
26
|
32
|
30
|
19
|
|
2025/04
|
49
|
56
|
55
|
50
|
59
|
60
|
51
|
52
|
49
|
41
|
40
|
82
|
140
|
106
|
70
|
64
|
61
|
57
|
40
|
39
|
29
|
43
|
54
|
51
|
52
|
51
|
37
|
38
|
36
|
23
|
|
|
2025/03
|
69
|
74
|
11
|
22
|
28
|
26
|
41
|
48
|
47
|
45
|
56
|
64
|
53
|
42
|
21
|
35
|
38
|
31
|
32
|
41
|
48
|
58
|
52
|
52
|
44
|
55
|
94
|
62
|
47
|
49
|
50
|
|
2025/02
|
32
|
30
|
38
|
40
|
48
|
56
|
60
|
78
|
60
|
51
|
59
|
73
|
61
|
49
|
41
|
40
|
42
|
40
|
53
|
72
|
82
|
55
|
50
|
77
|
70
|
51
|
50
|
56
|
|||
|
2025/01
|
101
|
117
|
142
|
200
|
73
|
72
|
80
|
66
|
70
|
80
|
94
|
74
|
104
|
104
|
66
|
73
|
87
|
114
|
92
|
91
|
104
|
143
|
169
|
109
|
17
|
35
|
49
|
72
|
134
|
66
|
79
|
|
2024/12
|
55
|
78
|
111
|
62
|
20
|
33
|
41
|
40
|
53
|
58
|
46
|
57
|
77
|
70
|
70
|
64
|
71
|
86
|
85
|
91
|
124
|
83
|
69
|
79
|
108
|
106
|
108
|
101
|
109
|
113
|
85
|
|
2024/11
|
52
|
61
|
63
|
59
|
48
|
48
|
49
|
55
|
49
|
40
|
50
|
75
|
51
|
47
|
50
|
42
|
10
|
9
|
11
|
17
|
19
|
26
|
36
|
32
|
14
|
25
|
25
|
28
|
36
|
43
|
|
|
2024/10
|
14
|
28
|
35
|
34
|
41
|
40
|
21
|
28
|
41
|
47
|
59
|
57
|
32
|
29
|
28
|
35
|
22
|
16
|
19
|
16
|
10
|
18
|
20
|
24
|
33
|
31
|
38
|
37
|
43
|
50
|
50
|
|
2024/09
|
26
|
27
|
35
|
39
|
38
|
32
|
32
|
29
|
27
|
31
|
29
|
27
|
22
|
27
|
30
|
25
|
20
|
20
|
26
|
22
|
22
|
19
|
28
|
30
|
44
|
54
|
58
|
69
|
70
|
41
|
|
|
2024/08
|
13
|
14
|
13
|
13
|
16
|
16
|
17
|
19
|
24
|
25
|
65
|
51
|
32
|
27
|
29
|
28
|
22
|
20
|
17
|
21
|
26
|
25
|
23
|
19
|
21
|
21
|
20
|
17
|
21
|
24
|
23
|
|
2024/07
|
22
|
20
|
19
|
14
|
19
|
16
|
17
|
21
|
23
|
24
|
25
|
18
|
19
|
18
|
19
|
19
|
17
|
17
|
14
|
15
|
14
|
15
|
17
|
19
|
23
|
21
|
15
|
18
|
11
|
13
|
11
|
|
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