Air Quality
Excellent
No health implications.
32
PM2.5
41
PM10
38
O3
0.6
CO
6
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Jan
65
Good
Tue
20 Jan
45
Excellent
Wed
21 Jan
61
Good
Thu
22 Jan
70
Good
Fri
23 Jan
92
Good
Sat
24 Jan
110
Light
Sun
25 Jan
47
Excellent
Air quality in the last 12 months (Hefeng)
|
2025/11
|
29
|
30
|
36
|
40
|
38
|
31
|
15
|
13
|
17
|
39
|
40
|
34
|
32
|
44
|
49
|
55
|
43
|
17
|
22
|
29
|
34
|
47
|
60
|
38
|
47
|
48
|
54
|
63
|
72
|
86
|
|
|
2025/10
|
19
|
20
|
23
|
20
|
24
|
29
|
31
|
35
|
40
|
35
|
49
|
39
|
16
|
10
|
14
|
10
|
11
|
9
|
9
|
9
|
13
|
19
|
24
|
33
|
43
|
32
|
31
|
31
|
40
|
38
|
32
|
|
2025/09
|
19
|
22
|
25
|
22
|
26
|
27
|
27
|
29
|
16
|
16
|
14
|
20
|
12
|
11
|
16
|
20
|
22
|
12
|
16
|
12
|
21
|
26
|
18
|
14
|
17
|
16
|
19
|
24
|
22
|
19
|
|
|
2025/08
|
24
|
23
|
21
|
25
|
25
|
23
|
19
|
14
|
16
|
18
|
8
|
9
|
8
|
16
|
14
|
15
|
15
|
23
|
19
|
13
|
12
|
13
|
16
|
19
|
14
|
16
|
16
|
19
|
25
|
25
|
18
|
|
2025/07
|
15
|
14
|
13
|
12
|
14
|
17
|
22
|
23
|
25
|
24
|
26
|
29
|
28
|
21
|
20
|
19
|
20
|
20
|
21
|
24
|
18
|
14
|
11
|
12
|
13
|
16
|
19
|
15
|
14
|
17
|
19
|
|
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
|
|
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