Air Quality
Excellent
No health implications.
3
PM2.5
10
PM10
38
O3
0.5
CO
4
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Aug
57
Good
Fri
14 Aug
62
Good
Sat
15 Aug
85
Good
Sun
16 Aug
90
Good
Mon
17 Aug
94
Good
Tue
18 Aug
96
Good
Wed
19 Aug
25
Excellent
Air quality in the last 12 months (Changsha County)
|
2026/07
|
26
|
26
|
30
|
19
|
17
|
19
|
17
|
17
|
20
|
26
|
34
|
35
|
52
|
40
|
20
|
22
|
31
|
26
|
18
|
33
|
23
|
24
|
28
|
33
|
46
|
33
|
14
|
19
|
21
|
18
|
17
|
|
2026/06
|
53
|
69
|
60
|
26
|
39
|
38
|
49
|
22
|
31
|
39
|
57
|
43
|
23
|
30
|
32
|
46
|
48
|
35
|
15
|
18
|
24
|
24
|
16
|
19
|
31
|
35
|
40
|
45
|
50
|
34
|
|
|
2026/05
|
39
|
35
|
38
|
40
|
46
|
43
|
44
|
54
|
52
|
51
|
47
|
52
|
25
|
23
|
38
|
23
|
20
|
21
|
15
|
28
|
34
|
25
|
24
|
27
|
29
|
29
|
29
|
33
|
48
|
46
|
66
|
|
2026/04
|
53
|
38
|
27
|
45
|
64
|
44
|
65
|
60
|
46
|
38
|
32
|
38
|
35
|
25
|
27
|
26
|
43
|
59
|
53
|
53
|
17
|
20
|
32
|
40
|
50
|
53
|
62
|
26
|
28
|
33
|
|
|
2026/03
|
13
|
25
|
46
|
52
|
50
|
73
|
71
|
46
|
60
|
67
|
46
|
67
|
46
|
53
|
93
|
13
|
21
|
24
|
33
|
38
|
34
|
32
|
24
|
45
|
63
|
31
|
59
|
55
|
53
|
33
|
36
|
|
2026/02
|
42
|
60
|
66
|
70
|
89
|
98
|
68
|
64
|
56
|
55
|
49
|
61
|
58
|
45
|
60
|
25
|
74
|
46
|
50
|
38
|
39
|
53
|
48
|
37
|
35
|
23
|
26
|
27
|
|||
|
2026/01
|
36
|
59
|
67
|
49
|
73
|
95
|
77
|
59
|
65
|
78
|
81
|
72
|
94
|
73
|
96
|
130
|
179
|
153
|
24
|
37
|
66
|
66
|
85
|
66
|
79
|
140
|
131
|
101
|
67
|
32
|
46
|
|
2025/12
|
127
|
127
|
74
|
65
|
102
|
108
|
124
|
154
|
147
|
130
|
156
|
184
|
31
|
55
|
58
|
63
|
107
|
148
|
86
|
132
|
105
|
67
|
53
|
86
|
73
|
60
|
73
|
82
|
96
|
185
|
158
|
|
2025/11
|
78
|
62
|
53
|
47
|
54
|
38
|
68
|
11
|
24
|
27
|
62
|
60
|
47
|
62
|
75
|
65
|
69
|
30
|
32
|
50
|
60
|
65
|
74
|
67
|
69
|
70
|
95
|
87
|
69
|
71
|
|
|
2025/10
|
51
|
51
|
46
|
44
|
51
|
39
|
59
|
76
|
55
|
58
|
133
|
151
|
94
|
77
|
59
|
41
|
31
|
11
|
9
|
10
|
21
|
32
|
40
|
47
|
83
|
85
|
79
|
74
|
79
|
123
|
75
|
|
2025/09
|
34
|
25
|
33
|
37
|
40
|
47
|
48
|
27
|
39
|
35
|
33
|
29
|
37
|
38
|
34
|
40
|
40
|
33
|
18
|
28
|
31
|
30
|
33
|
18
|
20
|
30
|
41
|
46
|
49
|
46
|
|
|
2025/08
|
40
|
53
|
37
|
25
|
32
|
19
|
17
|
20
|
31
|
33
|
41
|
37
|
29
|
25
|
16
|
25
|
27
|
33
|
15
|
19
|
22
|
21
|
31
|
26
|
22
|
27
|
36
|
27
|
30
|
46
|
31
|
|
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