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
15 Jul
Wed
16 Jul
Thu
17 Jul
Fri
18 Jul
Sat
19 Jul
Sun
20 Jul
Mon
21 Jul
Hengyang Air quality rank
Real-time AQI (Monitoring Station in Hengyang)
原169医院
2312
PM2.5
23
PM10
30
O3
0.5
CO
5
SO2
7
NO2
衡阳化工总厂
2617
PM2.5
26
PM10
30
O3
0.6
CO
6
SO2
11
NO2
市委党校
2716
PM2.5
27
PM10
56
O3
0.5
CO
9
SO2
14
NO2
市监测站
3916
PM2.5
39
PM10
54
O3
0.5
CO
7
SO2
11
NO2
真空机电公司
3015
PM2.5
30
PM10
29
O3
0.6
CO
7
SO2
5
NO2
师范学院
4123
PM2.5
41
PM10
20
O3
0.7
CO
6
SO2
11
NO2
Air quality in the last 12 months (Hengyang)
|
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
|
|
|
2024/10
|
30
|
52
|
56
|
53
|
56
|
77
|
74
|
55
|
52
|
67
|
75
|
73
|
171
|
79
|
38
|
38
|
54
|
46
|
29
|
26
|
41
|
24
|
36
|
46
|
59
|
68
|
56
|
69
|
69
|
55
|
60
|
|
2024/09
|
48
|
51
|
53
|
51
|
49
|
46
|
34
|
34
|
45
|
40
|
44
|
36
|
29
|
43
|
43
|
41
|
47
|
46
|
42
|
41
|
33
|
32
|
39
|
46
|
69
|
60
|
61
|
57
|
51
|
51
|
|
|
2024/08
|
17
|
21
|
25
|
31
|
33
|
32
|
31
|
31
|
33
|
34
|
30
|
32
|
27
|
35
|
39
|
36
|
45
|
60
|
36
|
45
|
46
|
24
|
24
|
24
|
41
|
38
|
45
|
25
|
35
|
39
|
50
|
|
2024/07
|
25
|
17
|
25
|
19
|
22
|
22
|
26
|
21
|
23
|
26
|
27
|
28
|
26
|
22
|
30
|
24
|
18
|
18
|
17
|
24
|
25
|
27
|
27
|
35
|
44
|
35
|
22
|
12
|
17
|
15
|
17
|
|
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