Air Quality
Excellent
No health implications.
27
PM2.5
48
PM10
106
O3
0.6
CO
12
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 May
83
Good
Fri
2 May
83
Good
Sat
3 May
78
Good
Sun
4 May
73
Good
Mon
5 May
53
Good
Tue
6 May
62
Good
Wed
7 May
15
Excellent
Air quality in the last 12 months (Hengfeng)
|
2025/02
|
22
|
15
|
30
|
46
|
43
|
50
|
58
|
50
|
32
|
44
|
56
|
57
|
71
|
85
|
53
|
56
|
57
|
33
|
38
|
20
|
15
|
22
|
19
|
47
|
74
|
65
|
50
|
36
|
|||
|
2025/01
|
89
|
77
|
72
|
65
|
88
|
72
|
73
|
80
|
62
|
45
|
48
|
54
|
59
|
57
|
73
|
58
|
52
|
54
|
57
|
59
|
65
|
63
|
56
|
55
|
38
|
23
|
47
|
69
|
150
|
58
|
38
|
|
2024/12
|
51
|
53
|
59
|
79
|
50
|
29
|
45
|
65
|
46
|
49
|
23
|
30
|
67
|
58
|
54
|
54
|
58
|
60
|
58
|
58
|
61
|
67
|
53
|
69
|
85
|
83
|
101
|
76
|
65
|
68
|
70
|
|
2024/11
|
22
|
33
|
43
|
54
|
63
|
49
|
35
|
38
|
39
|
41
|
41
|
48
|
48
|
43
|
23
|
24
|
24
|
26
|
32
|
37
|
39
|
34
|
59
|
46
|
36
|
29
|
42
|
45
|
54
|
50
|
|
|
2024/10
|
32
|
29
|
30
|
30
|
31
|
24
|
23
|
16
|
36
|
47
|
54
|
59
|
49
|
46
|
70
|
20
|
30
|
40
|
25
|
17
|
40
|
39
|
32
|
45
|
32
|
43
|
17
|
16
|
45
|
49
|
32
|
|
2024/09
|
41
|
52
|
50
|
42
|
35
|
33
|
34
|
37
|
33
|
34
|
36
|
23
|
38
|
40
|
34
|
36
|
25
|
22
|
33
|
40
|
28
|
19
|
22
|
20
|
36
|
40
|
29
|
29
|
37
|
37
|
|
|
2024/08
|
17
|
26
|
32
|
38
|
32
|
37
|
39
|
33
|
37
|
42
|
37
|
29
|
28
|
27
|
26
|
37
|
35
|
28
|
19
|
27
|
19
|
34
|
37
|
40
|
45
|
48
|
39
|
30
|
37
|
47
|
45
|
|
2024/07
|
24
|
27
|
23
|
24
|
26
|
21
|
25
|
23
|
25
|
30
|
32
|
28
|
28
|
27
|
33
|
34
|
26
|
24
|
23
|
27
|
34
|
28
|
32
|
28
|
20
|
17
|
17
|
15
|
20
|
24
|
22
|
|
2024/06
|
12
|
14
|
25
|
35
|
29
|
19
|
29
|
35
|
35
|
23
|
14
|
24
|
28
|
24
|
18
|
22
|
17
|
18
|
32
|
39
|
35
|
30
|
32
|
19
|
13
|
16
|
24
|
31
|
30
|
31
|
|
|
2024/05
|
13
|
33
|
43
|
25
|
16
|
27
|
44
|
47
|
56
|
57
|
45
|
38
|
57
|
51
|
50
|
58
|
51
|
52
|
51
|
35
|
24
|
26
|
31
|
23
|
26
|
23
|
21
|
18
|
32
|
43
|
34
|
|
2024/04
|
32
|
23
|
23
|
20
|
22
|
29
|
26
|
27
|
31
|
49
|
51
|
39
|
42
|
31
|
45
|
43
|
20
|
24
|
35
|
26
|
22
|
26
|
41
|
50
|
49
|
43
|
39
|
42
|
33
|
13
|
|
|
2024/03
|
37
|
40
|
39
|
40
|
28
|
22
|
33
|
53
|
61
|
61
|
60
|
56
|
70
|
57
|
53
|
48
|
37
|
37
|
49
|
60
|
55
|
54
|
47
|
38
|
39
|
20
|
40
|
33
|
47
|
49
|
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