Air Quality
Excellent
No health implications.
30
PM2.5
50
PM10
45
O3
1.0
CO
19
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Apr
63
Good
Sun
28 Apr
63
Good
Mon
29 Apr
42
Excellent
Tue
30 Apr
55
Good
Wed
1 May
60
Good
Thu
2 May
58
Good
Fri
3 May
57
Good
Air quality in the last 12 months (Hengdong)
|
2024/02
|
40
|
16
|
20
|
40
|
71
|
31
|
60
|
111
|
133
|
192
|
113
|
89
|
49
|
51
|
55
|
41
|
39
|
30
|
52
|
49
|
14
|
25
|
35
|
40
|
62
|
52
|
75
|
44
|
54
|
||
|
2024/01
|
93
|
110
|
66
|
65
|
76
|
93
|
107
|
124
|
123
|
115
|
89
|
92
|
97
|
93
|
206
|
167
|
101
|
33
|
16
|
30
|
72
|
41
|
52
|
51
|
57
|
67
|
86
|
91
|
78
|
45
|
70
|
|
2023/12
|
50
|
65
|
74
|
64
|
46
|
63
|
66
|
64
|
67
|
64
|
15
|
43
|
55
|
57
|
19
|
32
|
39
|
35
|
62
|
55
|
68
|
56
|
63
|
77
|
79
|
89
|
94
|
157
|
223
|
233
|
195
|
|
2023/11
|
67
|
61
|
68
|
82
|
69
|
22
|
41
|
34
|
30
|
20
|
13
|
13
|
59
|
76
|
60
|
47
|
65
|
69
|
68
|
64
|
62
|
62
|
77
|
71
|
69
|
75
|
82
|
82
|
68
|
72
|
|
|
2023/10
|
50
|
53
|
41
|
39
|
27
|
52
|
36
|
41
|
32
|
27
|
41
|
58
|
66
|
71
|
85
|
70
|
73
|
79
|
48
|
21
|
38
|
55
|
69
|
78
|
75
|
43
|
67
|
62
|
70
|
62
|
64
|
|
2023/09
|
44
|
40
|
36
|
41
|
45
|
33
|
24
|
28
|
37
|
32
|
34
|
34
|
24
|
22
|
21
|
30
|
34
|
37
|
35
|
38
|
21
|
26
|
33
|
43
|
36
|
44
|
56
|
59
|
56
|
63
|
|
|
2023/08
|
24
|
23
|
35
|
41
|
36
|
25
|
32
|
35
|
31
|
37
|
43
|
32
|
33
|
42
|
35
|
37
|
38
|
48
|
58
|
55
|
37
|
28
|
31
|
38
|
45
|
28
|
28
|
22
|
42
|
49
|
39
|
|
2023/07
|
44
|
32
|
24
|
19
|
23
|
21
|
21
|
23
|
24
|
23
|
26
|
26
|
28
|
32
|
40
|
56
|
47
|
31
|
20
|
21
|
24
|
24
|
30
|
34
|
28
|
28
|
31
|
25
|
32
|
31
|
26
|
|
2023/06
|
43
|
55
|
59
|
59
|
40
|
38
|
47
|
26
|
27
|
29
|
42
|
51
|
33
|
40
|
48
|
49
|
25
|
20
|
20
|
26
|
25
|
21
|
25
|
27
|
23
|
20
|
22
|
27
|
23
|
33
|
|
|
2023/05
|
70
|
57
|
33
|
29
|
38
|
22
|
25
|
51
|
65
|
46
|
31
|
54
|
79
|
103
|
78
|
74
|
44
|
54
|
49
|
57
|
41
|
29
|
48
|
36
|
35
|
33
|
22
|
32
|
42
|
54
|
42
|
|
2023/04
|
50
|
38
|
24
|
20
|
22
|
25
|
45
|
74
|
68
|
64
|
40
|
47
|
55
|
42
|
80
|
71
|
57
|
37
|
30
|
45
|
45
|
31
|
13
|
14
|
21
|
31
|
42
|
34
|
60
|
83
|
|
|
2023/03
|
90
|
135
|
115
|
90
|
67
|
64
|
76
|
79
|
61
|
51
|
66
|
106
|
99
|
76
|
71
|
85
|
26
|
39
|
16
|
32
|
45
|
41
|
31
|
22
|
47
|
57
|
50
|
72
|
58
|
57
|
49
|
|
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