Air Quality
Excellent
No health implications.
7
PM2.5
14
PM10
44
O3
0.5
CO
5
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 May
38
Excellent
Wed
13 May
40
Excellent
Thu
14 May
39
Excellent
Fri
15 May
37
Excellent
Sat
16 May
36
Excellent
Sun
17 May
27
Excellent
Mon
18 May
19
Excellent
Air quality in the last 12 months (Changning)
|
2026/04
|
45
|
45
|
50
|
46
|
49
|
41
|
46
|
56
|
31
|
31
|
38
|
40
|
61
|
68
|
79
|
63
|
51
|
59
|
60
|
53
|
58
|
59
|
56
|
54
|
78
|
54
|
46
|
30
|
32
|
29
|
|
|
2026/03
|
61
|
63
|
54
|
63
|
77
|
93
|
86
|
83
|
64
|
51
|
54
|
73
|
51
|
35
|
30
|
40
|
40
|
37
|
45
|
37
|
44
|
40
|
26
|
33
|
37
|
39
|
48
|
67
|
33
|
39
|
44
|
|
2026/02
|
32
|
31
|
32
|
36
|
34
|
32
|
33
|
40
|
40
|
36
|
30
|
29
|
29
|
31
|
50
|
58
|
77
|
51
|
38
|
30
|
30
|
36
|
45
|
44
|
57
|
63
|
48
|
56
|
|||
|
2026/01
|
39
|
34
|
27
|
27
|
30
|
30
|
30
|
33
|
37
|
32
|
37
|
35
|
35
|
40
|
37
|
33
|
32
|
34
|
40
|
40
|
29
|
31
|
33
|
33
|
33
|
32
|
32
|
35
|
36
|
34
|
34
|
|
2025/12
|
34
|
30
|
32
|
29
|
27
|
27
|
27
|
28
|
29
|
29
|
30
|
32
|
32
|
30
|
29
|
27
|
29
|
28
|
28
|
30
|
31
|
31
|
35
|
30
|
31
|
31
|
34
|
33
|
32
|
29
|
31
|
|
2025/11
|
23
|
20
|
13
|
14
|
15
|
15
|
19
|
21
|
21
|
20
|
19
|
18
|
20
|
21
|
26
|
25
|
26
|
24
|
19
|
17
|
18
|
17
|
21
|
24
|
28
|
32
|
31
|
31
|
34
|
35
|
|
|
2025/10
|
19
|
16
|
18
|
18
|
19
|
20
|
19
|
18
|
18
|
20
|
19
|
20
|
21
|
22
|
25
|
26
|
20
|
18
|
19
|
19
|
19
|
20
|
24
|
22
|
21
|
23
|
25
|
25
|
25
|
25
|
24
|
|
2025/09
|
21
|
21
|
20
|
24
|
24
|
23
|
23
|
22
|
21
|
22
|
21
|
21
|
18
|
16
|
17
|
14
|
17
|
18
|
21
|
24
|
22
|
22
|
22
|
17
|
25
|
22
|
18
|
19
|
20
|
15
|
|
|
2025/08
|
19
|
18
|
15
|
15
|
20
|
23
|
19
|
15
|
15
|
15
|
18
|
18
|
18
|
20
|
23
|
24
|
18
|
19
|
21
|
18
|
15
|
16
|
16
|
17
|
18
|
22
|
17
|
19
|
18
|
23
|
22
|
|
2025/07
|
19
|
18
|
16
|
15
|
13
|
16
|
16
|
14
|
17
|
17
|
19
|
22
|
26
|
24
|
19
|
21
|
22
|
22
|
24
|
21
|
20
|
22
|
23
|
18
|
16
|
16
|
18
|
20
|
24
|
20
|
17
|
|
2025/06
|
17
|
15
|
25
|
45
|
38
|
35
|
29
|
28
|
25
|
19
|
29
|
36
|
41
|
33
|
22
|
21
|
15
|
13
|
14
|
18
|
20
|
15
|
16
|
15
|
15
|
14
|
17
|
18
|
18
|
17
|
|
|
2025/05
|
31
|
27
|
29
|
20
|
26
|
33
|
30
|
36
|
37
|
46
|
39
|
42
|
40
|
39
|
37
|
37
|
34
|
27
|
35
|
31
|
36
|
34
|
40
|
33
|
16
|
18
|
18
|
17
|
15
|
18
|
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