Air Quality
Excellent
No health implications.
17
PM2.5
28
PM10
23
O3
0.9
CO
1
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Jan
68
Good
Sat
31 Jan
59
Good
Sun
1 Feb
59
Good
Mon
2 Feb
63
Good
Tue
3 Feb
68
Good
Wed
4 Feb
68
Good
Thu
5 Feb
16
Excellent
Air quality in the last 12 months (Hengdong)
|
2025/12
|
83
|
108
|
85
|
63
|
77
|
88
|
99
|
121
|
125
|
137
|
121
|
138
|
29
|
55
|
53
|
62
|
77
|
109
|
97
|
86
|
100
|
88
|
52
|
52
|
61
|
60
|
71
|
77
|
88
|
132
|
153
|
|
2025/11
|
58
|
49
|
33
|
40
|
39
|
31
|
59
|
12
|
11
|
18
|
44
|
57
|
47
|
51
|
56
|
65
|
65
|
28
|
33
|
42
|
50
|
56
|
64
|
57
|
59
|
67
|
81
|
84
|
74
|
67
|
|
|
2025/10
|
59
|
53
|
37
|
53
|
45
|
28
|
50
|
56
|
51
|
58
|
67
|
130
|
94
|
59
|
70
|
57
|
48
|
20
|
10
|
11
|
14
|
28
|
38
|
43
|
59
|
76
|
79
|
71
|
79
|
89
|
72
|
|
2025/09
|
27
|
29
|
34
|
37
|
35
|
37
|
43
|
34
|
22
|
26
|
24
|
25
|
26
|
39
|
44
|
42
|
37
|
36
|
31
|
22
|
24
|
24
|
32
|
12
|
15
|
25
|
38
|
50
|
56
|
47
|
|
|
2025/08
|
36
|
42
|
24
|
22
|
21
|
15
|
16
|
21
|
27
|
31
|
39
|
44
|
32
|
23
|
15
|
25
|
26
|
23
|
14
|
18
|
19
|
23
|
28
|
25
|
22
|
25
|
26
|
32
|
27
|
29
|
27
|
|
2025/07
|
18
|
16
|
24
|
30
|
42
|
42
|
48
|
41
|
36
|
24
|
25
|
26
|
31
|
32
|
26
|
25
|
31
|
33
|
30
|
25
|
15
|
14
|
16
|
23
|
25
|
33
|
20
|
22
|
25
|
20
|
26
|
|
2025/06
|
19
|
24
|
39
|
45
|
47
|
38
|
31
|
24
|
36
|
40
|
35
|
22
|
31
|
18
|
14
|
25
|
17
|
14
|
16
|
24
|
24
|
13
|
25
|
20
|
37
|
30
|
17
|
17
|
25
|
21
|
|
|
2025/05
|
59
|
63
|
67
|
62
|
49
|
55
|
74
|
45
|
33
|
53
|
54
|
70
|
61
|
48
|
71
|
23
|
25
|
25
|
29
|
19
|
22
|
27
|
28
|
53
|
55
|
53
|
58
|
15
|
23
|
32
|
17
|
|
2025/04
|
60
|
60
|
66
|
93
|
91
|
86
|
78
|
72
|
79
|
67
|
62
|
240
|
191
|
133
|
87
|
74
|
80
|
65
|
30
|
36
|
39
|
38
|
57
|
31
|
29
|
37
|
34
|
47
|
66
|
56
|
|
|
2025/03
|
35
|
35
|
15
|
30
|
43
|
52
|
55
|
49
|
50
|
46
|
47
|
58
|
64
|
22
|
24
|
48
|
47
|
41
|
44
|
55
|
60
|
59
|
81
|
81
|
77
|
83
|
85
|
61
|
51
|
21
|
51
|
|
2025/02
|
40
|
31
|
55
|
62
|
67
|
77
|
66
|
54
|
47
|
50
|
70
|
77
|
104
|
121
|
58
|
46
|
58
|
43
|
37
|
27
|
87
|
30
|
45
|
83
|
110
|
98
|
60
|
46
|
|||
|
2025/01
|
145
|
124
|
169
|
187
|
142
|
101
|
91
|
84
|
60
|
60
|
66
|
83
|
81
|
75
|
90
|
68
|
79
|
86
|
116
|
106
|
112
|
113
|
176
|
230
|
31
|
32
|
54
|
79
|
224
|
119
|
57
|
|
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