Air Quality
Excellent
No health implications.
10
PM2.5
17
PM10
80
O3
0.5
CO
4
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 May
57
Good
Sat
10 May
84
Good
Sun
11 May
90
Good
Mon
12 May
93
Good
Tue
13 May
88
Good
Wed
14 May
57
Good
Thu
15 May
34
Excellent
Air quality in the last 12 months (Changning)
|
2025/02
|
29
|
24
|
45
|
60
|
67
|
68
|
56
|
62
|
48
|
56
|
65
|
68
|
89
|
106
|
64
|
38
|
45
|
39
|
31
|
19
|
66
|
31
|
34
|
74
|
90
|
87
|
46
|
37
|
|||
|
2025/01
|
127
|
113
|
136
|
156
|
169
|
108
|
91
|
94
|
59
|
58
|
61
|
73
|
69
|
65
|
89
|
67
|
75
|
75
|
94
|
87
|
92
|
96
|
125
|
230
|
51
|
30
|
57
|
72
|
230
|
121
|
69
|
|
2024/12
|
61
|
66
|
76
|
131
|
57
|
42
|
45
|
59
|
107
|
79
|
42
|
69
|
86
|
67
|
58
|
64
|
73
|
74
|
95
|
116
|
116
|
106
|
88
|
103
|
119
|
118
|
113
|
126
|
96
|
118
|
111
|
|
2024/11
|
58
|
86
|
74
|
71
|
78
|
64
|
58
|
53
|
60
|
72
|
59
|
60
|
64
|
72
|
60
|
63
|
26
|
11
|
15
|
29
|
46
|
50
|
57
|
63
|
39
|
27
|
37
|
47
|
48
|
59
|
|
|
2024/10
|
32
|
44
|
57
|
54
|
52
|
64
|
66
|
53
|
49
|
56
|
62
|
67
|
114
|
85
|
36
|
31
|
46
|
37
|
22
|
28
|
34
|
21
|
32
|
43
|
49
|
58
|
45
|
54
|
64
|
54
|
52
|
|
2024/09
|
45
|
47
|
51
|
47
|
49
|
44
|
30
|
31
|
37
|
35
|
41
|
45
|
38
|
42
|
41
|
42
|
50
|
51
|
49
|
45
|
36
|
31
|
41
|
46
|
59
|
57
|
50
|
53
|
53
|
52
|
|
|
2024/08
|
15
|
21
|
23
|
28
|
30
|
30
|
28
|
29
|
30
|
31
|
31
|
26
|
23
|
31
|
33
|
34
|
40
|
59
|
33
|
42
|
40
|
20
|
24
|
23
|
36
|
35
|
40
|
29
|
37
|
42
|
52
|
|
2024/07
|
24
|
17
|
25
|
20
|
21
|
22
|
23
|
23
|
24
|
26
|
24
|
25
|
24
|
21
|
26
|
20
|
15
|
17
|
18
|
21
|
21
|
22
|
21
|
27
|
42
|
35
|
25
|
13
|
14
|
14
|
16
|
|
2024/06
|
19
|
20
|
45
|
23
|
17
|
31
|
35
|
41
|
42
|
29
|
18
|
22
|
18
|
20
|
19
|
22
|
14
|
16
|
17
|
24
|
23
|
24
|
25
|
21
|
12
|
20
|
28
|
24
|
21
|
21
|
|
|
2024/05
|
21
|
34
|
29
|
15
|
27
|
49
|
83
|
69
|
65
|
63
|
32
|
59
|
75
|
64
|
62
|
64
|
56
|
43
|
22
|
20
|
38
|
44
|
36
|
33
|
33
|
24
|
16
|
34
|
28
|
23
|
20
|
|
2024/04
|
40
|
49
|
27
|
29
|
22
|
26
|
33
|
40
|
44
|
44
|
51
|
48
|
42
|
53
|
54
|
46
|
22
|
35
|
24
|
23
|
33
|
48
|
42
|
48
|
33
|
30
|
37
|
49
|
44
|
12
|
|
|
2024/03
|
88
|
62
|
52
|
47
|
33
|
93
|
74
|
60
|
53
|
55
|
42
|
48
|
49
|
39
|
42
|
38
|
44
|
17
|
42
|
59
|
72
|
42
|
26
|
33
|
28
|
27
|
42
|
27
|
36
|
41
|
34
|
|
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