Air Quality
Excellent
No health implications.
19
PM2.5
23
PM10
83
O3
0.5
CO
4
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Jun
61
Good
Thu
26 Jun
58
Good
Fri
27 Jun
54
Good
Sat
28 Jun
48
Excellent
Sun
29 Jun
58
Good
Mon
30 Jun
61
Good
Tue
1 Jul
15
Excellent
Air quality in the last 12 months (Changsha County)
|
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
|
|
2024/06
|
24
|
36
|
45
|
21
|
27
|
31
|
39
|
39
|
30
|
18
|
23
|
24
|
29
|
27
|
27
|
27
|
19
|
23
|
19
|
26
|
28
|
29
|
36
|
15
|
13
|
16
|
23
|
25
|
26
|
15
|
|
|
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