Air Quality
Excellent
No health implications.
7
PM2.5
17
PM10
78
O3
0.8
CO
5
SO2
23
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 May
103
Light
Thu
22 May
81
Good
Fri
23 May
63
Good
Sat
24 May
78
Good
Sun
25 May
93
Good
Mon
26 May
115
Light
Tue
27 May
18
Excellent
Air quality in the last 12 months (Xishan)
|
2025/04
|
42
|
58
|
42
|
50
|
65
|
71
|
69
|
55
|
73
|
89
|
74
|
153
|
99
|
81
|
50
|
50
|
58
|
61
|
67
|
49
|
51
|
50
|
58
|
77
|
59
|
42
|
42
|
59
|
51
|
52
|
|
|
2025/03
|
53
|
65
|
17
|
18
|
31
|
42
|
59
|
71
|
49
|
48
|
65
|
48
|
41
|
44
|
31
|
43
|
43
|
41
|
51
|
55
|
51
|
52
|
58
|
64
|
78
|
78
|
93
|
50
|
73
|
39
|
36
|
|
2025/02
|
26
|
73
|
74
|
69
|
52
|
37
|
58
|
31
|
42
|
59
|
40
|
84
|
68
|
43
|
86
|
98
|
64
|
45
|
47
|
34
|
30
|
56
|
72
|
80
|
102
|
92
|
107
|
98
|
|||
|
2025/01
|
81
|
58
|
64
|
59
|
94
|
88
|
64
|
61
|
37
|
51
|
60
|
66
|
80
|
110
|
56
|
60
|
66
|
75
|
93
|
164
|
135
|
68
|
43
|
40
|
29
|
44
|
58
|
49
|
71
|
64
|
51
|
|
2024/12
|
62
|
69
|
69
|
40
|
58
|
115
|
141
|
39
|
55
|
41
|
59
|
55
|
73
|
66
|
66
|
63
|
72
|
69
|
39
|
54
|
80
|
49
|
50
|
63
|
77
|
122
|
63
|
66
|
62
|
77
|
83
|
|
2024/11
|
13
|
55
|
84
|
83
|
48
|
36
|
30
|
35
|
35
|
42
|
51
|
47
|
55
|
44
|
82
|
52
|
30
|
29
|
28
|
36
|
56
|
70
|
36
|
28
|
29
|
40
|
70
|
66
|
51
|
59
|
|
|
2024/10
|
17
|
30
|
19
|
23
|
20
|
14
|
15
|
40
|
46
|
61
|
70
|
62
|
34
|
36
|
63
|
47
|
37
|
38
|
28
|
38
|
28
|
33
|
45
|
34
|
41
|
25
|
21
|
57
|
40
|
38
|
27
|
|
2024/09
|
36
|
42
|
32
|
29
|
26
|
34
|
47
|
35
|
17
|
32
|
13
|
29
|
19
|
24
|
25
|
15
|
16
|
23
|
20
|
11
|
22
|
29
|
31
|
41
|
53
|
33
|
31
|
36
|
36
|
39
|
|
|
2024/08
|
23
|
20
|
40
|
32
|
39
|
36
|
43
|
36
|
40
|
45
|
44
|
33
|
40
|
32
|
24
|
35
|
27
|
24
|
22
|
25
|
26
|
34
|
46
|
33
|
34
|
32
|
34
|
36
|
27
|
32
|
41
|
|
2024/07
|
22
|
28
|
17
|
30
|
29
|
32
|
22
|
26
|
27
|
26
|
25
|
26
|
16
|
19
|
57
|
51
|
32
|
19
|
28
|
29
|
35
|
35
|
32
|
20
|
22
|
21
|
20
|
18
|
21
|
22
|
23
|
|
2024/06
|
38
|
29
|
36
|
48
|
41
|
20
|
29
|
37
|
39
|
23
|
27
|
37
|
57
|
53
|
42
|
37
|
28
|
26
|
17
|
29
|
40
|
17
|
21
|
30
|
28
|
25
|
19
|
14
|
26
|
12
|
|
|
2024/05
|
40
|
37
|
36
|
40
|
35
|
49
|
68
|
42
|
32
|
45
|
50
|
75
|
76
|
59
|
52
|
31
|
47
|
47
|
34
|
33
|
30
|
35
|
43
|
35
|
31
|
40
|
26
|
29
|
34
|
42
|
66
|
|
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