Air Quality
Excellent
No health implications.
29
PM2.5
40
PM10
131
O3
0.5
CO
4
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Jul
53
Good
Tue
21 Jul
56
Good
Wed
22 Jul
57
Good
Thu
23 Jul
60
Good
Fri
24 Jul
57
Good
Sat
25 Jul
59
Good
Sun
26 Jul
30
Excellent
Air quality in the last 12 months (Changsha County)
|
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
|
|
2025/07
|
19
|
15
|
24
|
39
|
47
|
52
|
53
|
49
|
33
|
22
|
37
|
25
|
24
|
29
|
34
|
29
|
36
|
38
|
32
|
30
|
18
|
14
|
15
|
18
|
23
|
28
|
28
|
27
|
29
|
24
|
36
|
|
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