Air Quality
Excellent
No health implications.
5
PM2.5
12
PM10
36
O3
0.5
CO
6
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 May
49
Excellent
Mon
26 May
60
Good
Tue
27 May
53
Good
Wed
28 May
71
Good
Thu
29 May
78
Good
Fri
30 May
80
Good
Sat
31 May
36
Excellent
Air quality in the last 12 months (Sifangtai)
|
2025/04
|
58
|
60
|
72
|
58
|
60
|
47
|
55
|
62
|
65
|
108
|
127
|
81
|
64
|
37
|
45
|
33
|
87
|
75
|
39
|
41
|
74
|
40
|
57
|
42
|
36
|
16
|
27
|
32
|
34
|
35
|
|
|
2025/03
|
16
|
19
|
23
|
39
|
43
|
40
|
29
|
52
|
60
|
67
|
70
|
52
|
20
|
17
|
20
|
27
|
45
|
26
|
42
|
105
|
53
|
13
|
19
|
37
|
39
|
34
|
22
|
21
|
26
|
15
|
44
|
|
2025/02
|
68
|
100
|
84
|
54
|
22
|
29
|
56
|
51
|
31
|
46
|
62
|
79
|
35
|
28
|
49
|
32
|
14
|
37
|
72
|
44
|
33
|
26
|
34
|
40
|
54
|
23
|
53
|
60
|
|||
|
2025/01
|
89
|
59
|
63
|
84
|
76
|
57
|
87
|
86
|
62
|
61
|
79
|
105
|
90
|
103
|
47
|
54
|
68
|
130
|
127
|
108
|
137
|
189
|
143
|
136
|
116
|
139
|
120
|
61
|
68
|
55
|
56
|
|
2024/12
|
35
|
21
|
21
|
19
|
18
|
18
|
23
|
37
|
49
|
65
|
31
|
35
|
29
|
42
|
30
|
21
|
20
|
33
|
36
|
53
|
73
|
57
|
50
|
36
|
44
|
21
|
20
|
33
|
32
|
66
|
85
|
|
2024/11
|
62
|
45
|
62
|
31
|
65
|
18
|
39
|
43
|
65
|
43
|
73
|
45
|
107
|
112
|
72
|
53
|
16
|
20
|
48
|
53
|
93
|
35
|
41
|
62
|
54
|
24
|
19
|
28
|
43
|
19
|
|
|
2024/10
|
33
|
36
|
43
|
42
|
45
|
36
|
50
|
53
|
62
|
46
|
38
|
36
|
40
|
46
|
23
|
22
|
42
|
41
|
23
|
34
|
35
|
30
|
37
|
34
|
57
|
39
|
33
|
51
|
57
|
59
|
58
|
|
2024/09
|
11
|
16
|
21
|
29
|
15
|
19
|
21
|
24
|
25
|
19
|
18
|
22
|
16
|
25
|
19
|
18
|
19
|
19
|
21
|
12
|
33
|
36
|
37
|
38
|
26
|
19
|
36
|
45
|
37
|
37
|
|
|
2024/08
|
18
|
20
|
16
|
23
|
20
|
18
|
25
|
31
|
35
|
30
|
16
|
22
|
18
|
18
|
23
|
23
|
36
|
24
|
12
|
19
|
24
|
14
|
25
|
19
|
22
|
23
|
20
|
27
|
28
|
24
|
15
|
|
2024/07
|
71
|
65
|
59
|
43
|
43
|
57
|
64
|
76
|
68
|
44
|
56
|
24
|
28
|
44
|
42
|
36
|
20
|
14
|
24
|
34
|
27
|
24
|
34
|
19
|
33
|
23
|
14
|
20
|
26
|
18
|
24
|
|
2024/06
|
12
|
18
|
17
|
19
|
24
|
22
|
28
|
23
|
20
|
19
|
19
|
15
|
20
|
14
|
14
|
13
|
16
|
17
|
17
|
22
|
23
|
16
|
13
|
13
|
15
|
19
|
24
|
36
|
44
|
54
|
|
|
2024/05
|
46
|
57
|
41
|
63
|
85
|
55
|
42
|
38
|
24
|
41
|
15
|
13
|
21
|
19
|
16
|
28
|
35
|
36
|
21
|
20
|
25
|
29
|
24
|
15
|
25
|
17
|
14
|
21
|
13
|
28
|
13
|
|
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