Air Quality
Excellent
No health implications.
18
PM2.5
27
PM10
52
O3
0.4
CO
4
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 Aug
49
Excellent
Wed
13 Aug
48
Excellent
Thu
14 Aug
55
Good
Fri
15 Aug
58
Good
Sat
16 Aug
53
Good
Sun
17 Aug
32
Excellent
Mon
18 Aug
23
Excellent
Air quality in the last 12 months (Changsha County)
|
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
|
|
2025/02
|
57
|
46
|
61
|
61
|
68
|
66
|
82
|
46
|
50
|
56
|
72
|
86
|
111
|
106
|
62
|
75
|
60
|
45
|
49
|
57
|
121
|
36
|
64
|
88
|
95
|
77
|
64
|
59
|
|||
|
2025/01
|
144
|
154
|
199
|
236
|
76
|
72
|
94
|
71
|
71
|
60
|
64
|
75
|
83
|
86
|
88
|
64
|
69
|
76
|
114
|
122
|
88
|
89
|
261
|
171
|
17
|
38
|
69
|
88
|
247
|
66
|
61
|
|
2024/12
|
60
|
68
|
133
|
136
|
47
|
62
|
68
|
99
|
77
|
65
|
71
|
92
|
101
|
58
|
59
|
76
|
67
|
87
|
84
|
114
|
103
|
78
|
73
|
105
|
127
|
131
|
175
|
85
|
80
|
113
|
132
|
|
2024/11
|
85
|
134
|
119
|
98
|
102
|
88
|
63
|
67
|
103
|
96
|
83
|
86
|
93
|
150
|
142
|
127
|
19
|
15
|
35
|
42
|
47
|
65
|
68
|
91
|
35
|
31
|
42
|
53
|
57
|
60
|
|
|
2024/10
|
35
|
58
|
59
|
45
|
53
|
92
|
61
|
45
|
63
|
80
|
76
|
107
|
202
|
62
|
94
|
95
|
51
|
41
|
28
|
42
|
37
|
19
|
42
|
45
|
66
|
68
|
81
|
158
|
98
|
63
|
69
|
|
2024/09
|
46
|
43
|
58
|
55
|
42
|
50
|
45
|
34
|
38
|
35
|
44
|
33
|
31
|
41
|
48
|
47
|
50
|
49
|
45
|
49
|
39
|
38
|
41
|
54
|
64
|
78
|
96
|
56
|
42
|
52
|
|
|
2024/08
|
23
|
26
|
26
|
31
|
34
|
31
|
34
|
37
|
38
|
42
|
43
|
37
|
30
|
35
|
38
|
25
|
35
|
20
|
31
|
35
|
44
|
37
|
28
|
32
|
39
|
40
|
44
|
28
|
32
|
43
|
43
|
|
2024/07
|
23
|
30
|
30
|
21
|
23
|
25
|
28
|
26
|
30
|
32
|
35
|
35
|
35
|
28
|
32
|
29
|
25
|
23
|
20
|
23
|
27
|
25
|
30
|
39
|
41
|
36
|
25
|
10
|
14
|
15
|
19
|
|
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