Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Nov
Wed
19 Nov
Thu
20 Nov
Fri
21 Nov
Sat
22 Nov
Sun
23 Nov
Mon
24 Nov
Real-time AQI (Monitoring Station in Hengyang)
市委党校
128
PM2.5
8
PM10
36
O3
0.5
CO
8
SO2
11
NO2
真空机电公司
167
PM2.5
16
PM10
35
O3
0.6
CO
6
SO2
11
NO2
Air quality in the last 12 months (Hengyang)
|
2025/10
|
65
|
56
|
35
|
51
|
46
|
28
|
52
|
57
|
46
|
54
|
57
|
106
|
78
|
51
|
63
|
49
|
45
|
19
|
10
|
10
|
10
|
24
|
39
|
42
|
55
|
68
|
71
|
64
|
74
|
88
|
61
|
|
2025/09
|
25
|
28
|
33
|
39
|
43
|
39
|
43
|
38
|
24
|
28
|
23
|
25
|
27
|
35
|
41
|
41
|
35
|
36
|
30
|
22
|
25
|
22
|
27
|
12
|
16
|
24
|
40
|
52
|
64
|
48
|
|
|
2025/08
|
36
|
41
|
24
|
23
|
26
|
16
|
17
|
21
|
27
|
30
|
36
|
47
|
35
|
24
|
14
|
27
|
28
|
23
|
14
|
21
|
19
|
23
|
29
|
24
|
24
|
23
|
35
|
32
|
30
|
25
|
26
|
|
2025/07
|
17
|
16
|
23
|
31
|
42
|
44
|
50
|
41
|
39
|
28
|
27
|
29
|
31
|
35
|
26
|
26
|
30
|
40
|
38
|
33
|
23
|
14
|
16
|
26
|
26
|
29
|
21
|
25
|
25
|
24
|
26
|
|
2025/06
|
18
|
23
|
37
|
47
|
51
|
43
|
32
|
27
|
37
|
41
|
40
|
24
|
35
|
20
|
16
|
25
|
16
|
13
|
17
|
22
|
24
|
15
|
27
|
21
|
39
|
34
|
17
|
17
|
19
|
21
|
|
|
2025/05
|
53
|
63
|
67
|
59
|
46
|
53
|
73
|
48
|
33
|
54
|
52
|
75
|
63
|
51
|
64
|
27
|
31
|
27
|
29
|
21
|
24
|
25
|
27
|
54
|
53
|
53
|
54
|
19
|
22
|
32
|
17
|
|
2025/04
|
61
|
66
|
72
|
118
|
105
|
89
|
83
|
76
|
78
|
63
|
59
|
222
|
225
|
142
|
94
|
76
|
82
|
69
|
32
|
32
|
36
|
37
|
55
|
32
|
29
|
41
|
28
|
43
|
64
|
53
|
|
|
2025/03
|
34
|
38
|
18
|
27
|
39
|
50
|
59
|
51
|
51
|
46
|
54
|
47
|
56
|
25
|
22
|
48
|
44
|
43
|
45
|
54
|
65
|
66
|
83
|
84
|
84
|
81
|
79
|
62
|
49
|
22
|
48
|
|
2025/02
|
42
|
29
|
56
|
75
|
86
|
81
|
67
|
53
|
48
|
56
|
74
|
79
|
100
|
119
|
58
|
46
|
56
|
46
|
39
|
26
|
93
|
37
|
44
|
89
|
107
|
105
|
63
|
39
|
|||
|
2025/01
|
153
|
132
|
160
|
181
|
147
|
101
|
94
|
86
|
60
|
62
|
68
|
90
|
88
|
84
|
89
|
68
|
83
|
91
|
125
|
111
|
113
|
120
|
176
|
250
|
36
|
34
|
58
|
70
|
221
|
148
|
69
|
|
2024/12
|
75
|
83
|
94
|
147
|
47
|
48
|
52
|
72
|
105
|
78
|
58
|
82
|
100
|
63
|
60
|
74
|
84
|
80
|
97
|
124
|
120
|
106
|
88
|
102
|
131
|
124
|
137
|
122
|
100
|
123
|
124
|
|
2024/11
|
66
|
115
|
92
|
87
|
103
|
73
|
67
|
51
|
63
|
83
|
62
|
71
|
65
|
81
|
71
|
79
|
21
|
14
|
16
|
34
|
51
|
54
|
69
|
80
|
40
|
28
|
40
|
45
|
54
|
64
|
|
|
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
*: primary pollution