Air Quality
Excellent
No health implications.
21
PM2.5
29
PM10
89
O3
0.4
CO
3
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 May
51
Good
Sun
17 May
50
Excellent
Mon
18 May
51
Good
Tue
19 May
50
Excellent
Wed
20 May
42
Excellent
Thu
21 May
41
Excellent
Fri
22 May
32
Excellent
Air quality in the last 12 months (Xishan)
|
2026/04
|
39
|
37
|
34
|
36
|
40
|
35
|
36
|
48
|
34
|
34
|
39
|
40
|
48
|
58
|
69
|
53
|
56
|
55
|
58
|
42
|
47
|
49
|
51
|
57
|
41
|
44
|
40
|
31
|
31
|
30
|
|
|
2026/03
|
51
|
51
|
55
|
46
|
66
|
69
|
70
|
73
|
28
|
35
|
59
|
54
|
38
|
28
|
29
|
32
|
39
|
34
|
41
|
37
|
52
|
53
|
30
|
43
|
61
|
38
|
40
|
52
|
38
|
32
|
34
|
|
2026/02
|
40
|
40
|
35
|
37
|
40
|
42
|
64
|
53
|
39
|
31
|
30
|
27
|
27
|
35
|
43
|
62
|
135
|
54
|
43
|
31
|
21
|
27
|
36
|
41
|
47
|
38
|
34
|
44
|
|||
|
2026/01
|
48
|
29
|
24
|
23
|
29
|
43
|
41
|
41
|
33
|
33
|
56
|
35
|
53
|
42
|
53
|
34
|
49
|
43
|
38
|
34
|
28
|
34
|
35
|
37
|
31
|
40
|
34
|
42
|
31
|
32
|
46
|
|
2025/12
|
46
|
44
|
55
|
32
|
36
|
40
|
47
|
48
|
34
|
45
|
45
|
37
|
58
|
59
|
33
|
36
|
45
|
36
|
33
|
42
|
40
|
26
|
32
|
28
|
47
|
41
|
42
|
38
|
28
|
30
|
27
|
|
2025/11
|
35
|
14
|
10
|
29
|
22
|
14
|
24
|
31
|
11
|
12
|
21
|
26
|
28
|
29
|
32
|
34
|
34
|
32
|
21
|
37
|
38
|
32
|
26
|
40
|
38
|
58
|
45
|
57
|
57
|
51
|
|
|
2025/10
|
7
|
12
|
15
|
16
|
19
|
26
|
8
|
8
|
12
|
16
|
20
|
21
|
30
|
28
|
20
|
16
|
14
|
19
|
21
|
26
|
17
|
23
|
25
|
37
|
32
|
28
|
31
|
32
|
22
|
31
|
38
|
|
2025/09
|
20
|
26
|
18
|
17
|
19
|
20
|
24
|
25
|
25
|
21
|
13
|
15
|
15
|
14
|
20
|
14
|
19
|
21
|
20
|
28
|
23
|
28
|
18
|
17
|
27
|
12
|
14
|
19
|
12
|
11
|
|
|
2025/08
|
23
|
27
|
23
|
20
|
23
|
23
|
14
|
15
|
17
|
18
|
15
|
15
|
24
|
41
|
28
|
15
|
19
|
21
|
26
|
26
|
14
|
8
|
9
|
13
|
14
|
16
|
15
|
16
|
19
|
19
|
22
|
|
2025/07
|
15
|
14
|
13
|
16
|
13
|
15
|
19
|
14
|
21
|
21
|
18
|
24
|
31
|
26
|
30
|
33
|
27
|
25
|
13
|
21
|
20
|
14
|
14
|
16
|
17
|
15
|
13
|
22
|
38
|
28
|
20
|
|
2025/06
|
10
|
14
|
13
|
22
|
22
|
34
|
34
|
39
|
37
|
33
|
34
|
44
|
50
|
47
|
20
|
25
|
17
|
8
|
11
|
14
|
24
|
14
|
18
|
12
|
13
|
19
|
16
|
16
|
15
|
18
|
|
|
2025/05
|
33
|
29
|
21
|
16
|
24
|
30
|
25
|
31
|
39
|
40
|
23
|
32
|
30
|
31
|
27
|
23
|
36
|
31
|
30
|
28
|
33
|
34
|
55
|
29
|
19
|
18
|
13
|
12
|
17
|
13
|
9
|
|
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