Air Quality
Excellent
No health implications.
3
PM2.5
12
PM10
29
O3
0.6
CO
2
SO2
22
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Mar
79
Good
Tue
17 Mar
48
Excellent
Wed
18 Mar
63
Good
Thu
19 Mar
83
Good
Fri
20 Mar
60
Good
Sat
21 Mar
60
Good
Sun
22 Mar
17
Excellent
Air quality in the last 12 months (Changsha County)
|
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
|
|
2025/06
|
17
|
26
|
43
|
56
|
48
|
43
|
32
|
31
|
40
|
38
|
20
|
19
|
28
|
21
|
19
|
29
|
17
|
15
|
16
|
19
|
23
|
16
|
20
|
19
|
29
|
43
|
25
|
18
|
16
|
20
|
|
|
2025/05
|
73
|
62
|
69
|
61
|
57
|
70
|
77
|
44
|
40
|
55
|
48
|
52
|
49
|
66
|
78
|
44
|
37
|
56
|
45
|
21
|
25
|
28
|
36
|
58
|
57
|
61
|
69
|
29
|
23
|
27
|
21
|
|
2025/04
|
66
|
66
|
61
|
70
|
75
|
84
|
80
|
76
|
82
|
54
|
57
|
208
|
150
|
148
|
79
|
59
|
75
|
73
|
27
|
75
|
37
|
51
|
71
|
42
|
42
|
41
|
50
|
62
|
71
|
47
|
|
|
2025/03
|
42
|
40
|
12
|
38
|
45
|
62
|
52
|
48
|
69
|
58
|
44
|
74
|
70
|
19
|
34
|
52
|
47
|
53
|
48
|
52
|
56
|
61
|
87
|
85
|
70
|
81
|
88
|
63
|
65
|
34
|
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
Air quality source: CNEMC
*: primary pollution