Air Quality
Excellent
No health implications.
9
PM2.5
13
PM10
71
O3
0.3
CO
5
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Apr
60
Good
Tue
30 Apr
59
Good
Wed
1 May
50
Excellent
Thu
2 May
46
Excellent
Fri
3 May
53
Good
Sat
4 May
69
Good
Sun
5 May
71
Good
Air quality in the last 12 months (Changning)
|
2024/02
|
113
|
124
|
48
|
40
|
42
|
51
|
63
|
70
|
87
|
127
|
102
|
105
|
112
|
118
|
39
|
55
|
65
|
78
|
85
|
162
|
87
|
20
|
23
|
23
|
42
|
51
|
61
|
80
|
87
|
||
|
2024/01
|
173
|
118
|
79
|
94
|
115
|
110
|
145
|
135
|
105
|
130
|
115
|
144
|
174
|
145
|
131
|
140
|
63
|
72
|
78
|
69
|
26
|
22
|
36
|
42
|
50
|
67
|
73
|
72
|
103
|
111
|
113
|
|
2023/12
|
25
|
32
|
55
|
65
|
78
|
72
|
90
|
100
|
110
|
125
|
114
|
41
|
56
|
92
|
58
|
55
|
60
|
71
|
76
|
79
|
87
|
104
|
103
|
96
|
123
|
132
|
143
|
176
|
167
|
129
|
200
|
|
2023/11
|
81
|
92
|
96
|
35
|
45
|
58
|
75
|
92
|
85
|
95
|
78
|
21
|
20
|
33
|
37
|
45
|
60
|
82
|
81
|
97
|
98
|
53
|
89
|
124
|
135
|
52
|
74
|
85
|
73
|
59
|
|
|
2023/10
|
33
|
33
|
39
|
39
|
20
|
16
|
19
|
34
|
20
|
21
|
37
|
25
|
22
|
31
|
53
|
61
|
67
|
65
|
21
|
31
|
48
|
62
|
77
|
96
|
75
|
41
|
26
|
32
|
38
|
47
|
72
|
|
2023/09
|
55
|
57
|
60
|
64
|
55
|
49
|
58
|
59
|
55
|
51
|
49
|
25
|
31
|
34
|
50
|
63
|
86
|
60
|
60
|
28
|
22
|
22
|
23
|
20
|
20
|
22
|
29
|
35
|
32
|
32
|
|
|
2023/08
|
30
|
27
|
26
|
34
|
29
|
35
|
27
|
30
|
33
|
40
|
45
|
27
|
31
|
45
|
44
|
54
|
56
|
53
|
56
|
51
|
38
|
39
|
49
|
27
|
25
|
21
|
31
|
38
|
45
|
36
|
38
|
|
2023/07
|
48
|
50
|
40
|
30
|
42
|
56
|
58
|
49
|
46
|
51
|
43
|
32
|
25
|
28
|
50
|
53
|
53
|
56
|
35
|
35
|
35
|
35
|
49
|
39
|
38
|
30
|
20
|
19
|
26
|
35
|
36
|
|
2023/06
|
26
|
26
|
20
|
27
|
29
|
50
|
55
|
38
|
42
|
40
|
38
|
37
|
50
|
42
|
32
|
34
|
40
|
42
|
45
|
56
|
31
|
28
|
40
|
48
|
53
|
60
|
62
|
46
|
38
|
39
|
|
|
2023/05
|
66
|
73
|
81
|
71
|
58
|
46
|
45
|
25
|
18
|
24
|
28
|
36
|
43
|
53
|
78
|
94
|
72
|
51
|
70
|
65
|
59
|
30
|
46
|
61
|
69
|
70
|
59
|
54
|
65
|
72
|
63
|
|
2023/04
|
63
|
73
|
61
|
33
|
41
|
44
|
58
|
62
|
66
|
73
|
72
|
54
|
68
|
54
|
43
|
72
|
83
|
46
|
57
|
47
|
65
|
19
|
19
|
22
|
43
|
57
|
57
|
64
|
54
|
66
|
|
|
2023/03
|
87
|
89
|
71
|
67
|
76
|
93
|
134
|
82
|
68
|
69
|
81
|
39
|
28
|
51
|
72
|
87
|
56
|
43
|
54
|
56
|
77
|
82
|
38
|
22
|
32
|
54
|
29
|
36
|
40
|
50
|
72
|
|
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