Air Quality
Excellent
No health implications.
9
PM2.5
15
PM10
58
O3
0.3
CO
8
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 May
53
Good
Tue
21 May
59
Good
Wed
22 May
54
Good
Thu
23 May
55
Good
Fri
24 May
58
Good
Sat
25 May
55
Good
Air quality in the last 12 months (Sifangtai)
|
2024/02
|
30
|
39
|
73
|
60
|
68
|
72
|
75
|
68
|
79
|
163
|
133
|
52
|
62
|
38
|
35
|
34
|
40
|
42
|
26
|
28
|
27
|
29
|
31
|
55
|
84
|
53
|
48
|
50
|
44
|
||
|
2024/01
|
54
|
81
|
125
|
112
|
74
|
54
|
72
|
31
|
44
|
43
|
48
|
73
|
61
|
51
|
24
|
40
|
81
|
41
|
47
|
53
|
36
|
27
|
32
|
33
|
50
|
78
|
122
|
164
|
157
|
91
|
73
|
|
2023/12
|
47
|
48
|
65
|
40
|
47
|
47
|
29
|
39
|
30
|
26
|
37
|
65
|
43
|
59
|
32
|
26
|
27
|
34
|
87
|
45
|
53
|
58
|
68
|
56
|
57
|
54
|
56
|
79
|
76
|
76
|
34
|
|
2023/11
|
43
|
44
|
35
|
50
|
43
|
30
|
26
|
40
|
63
|
53
|
37
|
41
|
43
|
54
|
69
|
107
|
37
|
25
|
39
|
34
|
45
|
49
|
21
|
26
|
28
|
33
|
75
|
58
|
53
|
33
|
|
|
2023/10
|
20
|
24
|
40
|
23
|
18
|
21
|
31
|
59
|
59
|
38
|
35
|
35
|
41
|
50
|
47
|
26
|
29
|
38
|
23
|
22
|
23
|
22
|
30
|
54
|
76
|
41
|
37
|
54
|
54
|
91
|
79
|
|
2023/09
|
18
|
22
|
31
|
42
|
27
|
28
|
30
|
37
|
33
|
35
|
19
|
21
|
27
|
33
|
35
|
29
|
37
|
28
|
22
|
20
|
25
|
21
|
25
|
33
|
32
|
31
|
25
|
21
|
21
|
17
|
|
|
2023/08
|
28
|
24
|
15
|
16
|
12
|
16
|
14
|
13
|
15
|
20
|
15
|
14
|
17
|
15
|
26
|
25
|
28
|
27
|
23
|
37
|
29
|
21
|
30
|
34
|
42
|
21
|
21
|
24
|
27
|
17
|
21
|
|
2023/07
|
27
|
25
|
31
|
34
|
26
|
22
|
23
|
41
|
46
|
31
|
23
|
30
|
47
|
39
|
15
|
10
|
15
|
20
|
36
|
29
|
32
|
27
|
15
|
19
|
33
|
47
|
31
|
26
|
27
|
23
|
22
|
|
2023/06
|
25
|
30
|
16
|
24
|
24
|
27
|
27
|
30
|
30
|
25
|
36
|
31
|
39
|
35
|
23
|
55
|
24
|
26
|
40
|
33
|
22
|
22
|
36
|
31
|
30
|
56
|
33
|
22
|
27
|
27
|
|
|
2023/05
|
36
|
45
|
72
|
36
|
33
|
42
|
60
|
46
|
28
|
24
|
42
|
54
|
45
|
34
|
34
|
48
|
28
|
34
|
43
|
47
|
133
|
25
|
33
|
43
|
52
|
38
|
31
|
27
|
23
|
23
|
57
|
|
2023/04
|
56
|
84
|
99
|
53
|
65
|
108
|
117
|
62
|
117
|
244
|
163
|
95
|
35
|
43
|
79
|
42
|
58
|
49
|
26
|
125
|
43
|
28
|
30
|
40
|
59
|
32
|
51
|
47
|
33
|
25
|
|
|
2023/03
|
46
|
39
|
36
|
40
|
39
|
96
|
39
|
30
|
30
|
44
|
46
|
44
|
26
|
33
|
40
|
37
|
29
|
33
|
39
|
72
|
84
|
206
|
185
|
48
|
54
|
64
|
50
|
60
|
71
|
64
|
63
|
|
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