Air Quality
Excellent
No health implications.
14
PM2.5
39
PM10
97
O3
0.4
CO
4
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Apr
61
Good
Wed
22 Apr
63
Good
Thu
23 Apr
62
Good
Fri
24 Apr
72
Good
Sat
25 Apr
73
Good
Sun
26 Apr
69
Good
Mon
27 Apr
45
Excellent
Air quality in the last 12 months (Weichang)
|
2026/03
|
42
|
59
|
45
|
45
|
38
|
25
|
35
|
52
|
21
|
38
|
25
|
45
|
78
|
26
|
45
|
43
|
55
|
32
|
32
|
35
|
57
|
67
|
71
|
78
|
61
|
30
|
27
|
36
|
44
|
28
|
27
|
|
2026/02
|
20
|
18
|
31
|
46
|
35
|
14
|
14
|
18
|
29
|
43
|
20
|
46
|
39
|
41
|
19
|
23
|
68
|
21
|
35
|
63
|
225
|
33
|
25
|
43
|
73
|
40
|
35
|
34
|
|||
|
2026/01
|
30
|
37
|
51
|
41
|
24
|
27
|
23
|
40
|
60
|
19
|
17
|
41
|
22
|
51
|
58
|
32
|
20
|
29
|
23
|
17
|
19
|
24
|
31
|
25
|
22
|
34
|
22
|
40
|
38
|
46
|
31
|
|
2025/12
|
19
|
19
|
18
|
18
|
25
|
50
|
39
|
20
|
44
|
59
|
34
|
37
|
29
|
27
|
45
|
60
|
37
|
45
|
78
|
20
|
24
|
52
|
48
|
27
|
21
|
45
|
61
|
48
|
37
|
24
|
21
|
|
2025/11
|
21
|
17
|
34
|
44
|
62
|
63
|
52
|
44
|
13
|
17
|
29
|
53
|
17
|
28
|
51
|
28
|
15
|
21
|
21
|
20
|
21
|
30
|
62
|
47
|
23
|
39
|
22
|
43
|
48
|
30
|
|
|
2025/10
|
21
|
32
|
30
|
22
|
17
|
16
|
29
|
20
|
13
|
15
|
25
|
24
|
33
|
41
|
31
|
23
|
17
|
13
|
12
|
14
|
24
|
24
|
38
|
52
|
37
|
14
|
17
|
44
|
90
|
57
|
35
|
|
2025/09
|
17
|
19
|
33
|
32
|
31
|
14
|
12
|
14
|
23
|
16
|
30
|
36
|
38
|
14
|
10
|
12
|
15
|
13
|
15
|
19
|
20
|
26
|
16
|
15
|
17
|
21
|
21
|
23
|
20
|
17
|
|
|
2025/08
|
27
|
36
|
24
|
21
|
18
|
19
|
14
|
19
|
15
|
17
|
21
|
15
|
15
|
17
|
23
|
17
|
18
|
21
|
21
|
17
|
16
|
13
|
16
|
16
|
16
|
12
|
12
|
13
|
18
|
21
|
20
|
|
2025/07
|
25
|
24
|
21
|
20
|
21
|
17
|
22
|
25
|
28
|
37
|
41
|
35
|
18
|
21
|
22
|
15
|
17
|
18
|
30
|
18
|
16
|
22
|
31
|
22
|
16
|
25
|
13
|
16
|
16
|
18
|
19
|
|
2025/06
|
31
|
28
|
25
|
21
|
23
|
21
|
18
|
25
|
29
|
18
|
28
|
45
|
31
|
39
|
16
|
17
|
26
|
39
|
26
|
19
|
17
|
25
|
31
|
43
|
50
|
48
|
47
|
28
|
35
|
26
|
|
|
2025/05
|
18
|
23
|
22
|
22
|
34
|
23
|
37
|
66
|
25
|
43
|
35
|
34
|
50
|
30
|
32
|
47
|
33
|
14
|
20
|
42
|
53
|
79
|
34
|
31
|
43
|
40
|
22
|
29
|
51
|
53
|
41
|
|
2025/04
|
23
|
17
|
31
|
48
|
16
|
30
|
49
|
28
|
36
|
34
|
60
|
71
|
40
|
28
|
39
|
56
|
47
|
18
|
16
|
37
|
44
|
34
|
53
|
25
|
25
|
48
|
23
|
23
|
48
|
30
|
|
|
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