Air Quality
Excellent
No health implications.
7
PM2.5
17
PM10
37
O3
0.3
CO
5
SO2
22
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 May
57
Good
Mon
18 May
48
Excellent
Tue
19 May
47
Excellent
Wed
20 May
49
Excellent
Thu
21 May
49
Excellent
Fri
22 May
49
Excellent
Sat
23 May
38
Excellent
Air quality in the last 12 months (Sifangtai)
|
2026/04
|
102
|
105
|
88
|
51
|
41
|
25
|
26
|
39
|
57
|
37
|
39
|
34
|
26
|
34
|
56
|
51
|
59
|
33
|
36
|
51
|
43
|
21
|
22
|
26
|
29
|
32
|
29
|
31
|
39
|
56
|
|
|
2026/03
|
32
|
43
|
45
|
50
|
53
|
49
|
35
|
47
|
34
|
42
|
44
|
48
|
37
|
58
|
33
|
47
|
50
|
84
|
61
|
50
|
142
|
115
|
66
|
111
|
93
|
104
|
103
|
174
|
129
|
33
|
83
|
|
2026/02
|
49
|
51
|
50
|
52
|
34
|
23
|
26
|
34
|
52
|
75
|
70
|
42
|
63
|
47
|
27
|
30
|
51
|
22
|
31
|
62
|
82
|
93
|
75
|
44
|
44
|
38
|
27
|
23
|
|||
|
2026/01
|
29
|
48
|
58
|
30
|
24
|
39
|
37
|
23
|
54
|
54
|
35
|
73
|
67
|
30
|
58
|
46
|
52
|
48
|
54
|
44
|
34
|
33
|
45
|
49
|
35
|
29
|
40
|
56
|
42
|
42
|
37
|
|
2025/12
|
34
|
40
|
30
|
27
|
29
|
48
|
69
|
55
|
46
|
33
|
24
|
34
|
54
|
95
|
75
|
31
|
33
|
66
|
76
|
37
|
30
|
46
|
58
|
49
|
52
|
27
|
46
|
51
|
44
|
27
|
33
|
|
2025/11
|
66
|
51
|
57
|
62
|
96
|
77
|
25
|
64
|
36
|
19
|
28
|
54
|
38
|
34
|
51
|
82
|
55
|
39
|
73
|
70
|
42
|
92
|
108
|
77
|
36
|
54
|
76
|
56
|
54
|
52
|
|
|
2025/10
|
25
|
23
|
42
|
38
|
24
|
37
|
29
|
21
|
27
|
41
|
33
|
29
|
50
|
61
|
38
|
43
|
41
|
15
|
18
|
21
|
25
|
40
|
43
|
129
|
119
|
134
|
138
|
35
|
79
|
90
|
51
|
|
2025/09
|
24
|
24
|
23
|
32
|
34
|
21
|
25
|
29
|
21
|
17
|
27
|
31
|
32
|
35
|
24
|
16
|
15
|
18
|
28
|
28
|
32
|
24
|
25
|
21
|
14
|
13
|
20
|
23
|
33
|
33
|
|
|
2025/08
|
27
|
31
|
25
|
26
|
25
|
25
|
26
|
21
|
22
|
11
|
25
|
32
|
29
|
16
|
16
|
13
|
15
|
23
|
18
|
17
|
24
|
18
|
13
|
20
|
18
|
14
|
19
|
22
|
15
|
15
|
22
|
|
2025/07
|
29
|
23
|
30
|
24
|
30
|
19
|
24
|
31
|
30
|
22
|
28
|
30
|
26
|
24
|
24
|
31
|
25
|
26
|
32
|
30
|
19
|
26
|
34
|
31
|
30
|
22
|
25
|
23
|
32
|
17
|
25
|
|
2025/06
|
46
|
30
|
19
|
15
|
17
|
18
|
17
|
20
|
24
|
18
|
16
|
23
|
27
|
32
|
27
|
28
|
19
|
22
|
39
|
24
|
15
|
17
|
29
|
39
|
46
|
45
|
44
|
48
|
33
|
25
|
|
|
2025/05
|
44
|
45
|
25
|
15
|
22
|
31
|
39
|
35
|
28
|
33
|
44
|
68
|
43
|
38
|
31
|
31
|
34
|
22
|
27
|
32
|
21
|
33
|
23
|
19
|
20
|
28
|
30
|
42
|
51
|
46
|
50
|
|
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