Air Quality
Excellent
No health implications.
30
PM2.5
38
PM10
70
O3
0.4
CO
4
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
3 Jun
93
Good
Wed
4 Jun
105
Light
Thu
5 Jun
106
Light
Fri
6 Jun
109
Light
Sat
7 Jun
86
Good
Sun
8 Jun
46
Excellent
Mon
9 Jun
46
Excellent
Air quality in the last 12 months (Changsha County)
|
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
|
|
|
2024/05
|
48
|
49
|
28
|
18
|
46
|
39
|
55
|
78
|
55
|
64
|
55
|
103
|
91
|
62
|
65
|
73
|
66
|
53
|
51
|
35
|
57
|
25
|
37
|
45
|
37
|
35
|
27
|
30
|
34
|
17
|
40
|
|
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