Air Quality
Excellent
No health implications.
9
PM2.5
20
PM10
79
O3
0.4
CO
7
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
8 Jul
59
Good
Thu
9 Jul
77
Good
Fri
10 Jul
74
Good
Sat
11 Jul
67
Good
Sun
12 Jul
73
Good
Mon
13 Jul
65
Good
Tue
14 Jul
37
Excellent
Air quality in the last 12 months (Weichang)
|
2026/05
|
30
|
30
|
19
|
23
|
36
|
34
|
25
|
26
|
36
|
36
|
28
|
40
|
52
|
72
|
56
|
43
|
24
|
23
|
29
|
26
|
27
|
29
|
27
|
43
|
43
|
29
|
28
|
25
|
25
|
30
|
42
|
|
2026/04
|
24
|
43
|
67
|
38
|
39
|
24
|
23
|
40
|
31
|
31
|
43
|
41
|
33
|
50
|
57
|
50
|
36
|
50
|
104
|
90
|
29
|
34
|
42
|
43
|
42
|
36
|
26
|
21
|
23
|
30
|
|
|
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
|
|
|
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