Air Quality
Excellent
No health implications.
16
PM2.5
27
PM10
57
O3
0.4
CO
3
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Jan
63
Good
Sat
31 Jan
69
Good
Sun
1 Feb
70
Good
Mon
2 Feb
68
Good
Tue
3 Feb
69
Good
Wed
4 Feb
17
Excellent
Thu
5 Feb
46
Excellent
Air quality in the last 12 months (Bei'an)
|
2025/12
|
33
|
28
|
39
|
37
|
45
|
55
|
73
|
44
|
41
|
30
|
25
|
32
|
57
|
67
|
48
|
30
|
50
|
72
|
61
|
36
|
44
|
54
|
54
|
52
|
36
|
35
|
62
|
77
|
41
|
37
|
30
|
|
2025/11
|
120
|
22
|
51
|
56
|
105
|
68
|
18
|
74
|
66
|
20
|
27
|
55
|
27
|
32
|
61
|
47
|
21
|
37
|
109
|
62
|
53
|
162
|
179
|
30
|
30
|
124
|
66
|
60
|
55
|
27
|
|
|
2025/10
|
30
|
32
|
45
|
25
|
18
|
22
|
32
|
21
|
31
|
33
|
39
|
19
|
30
|
24
|
36
|
34
|
66
|
18
|
18
|
19
|
27
|
27
|
30
|
40
|
99
|
53
|
36
|
33
|
101
|
66
|
56
|
|
2025/09
|
17
|
17
|
25
|
37
|
32
|
15
|
16
|
15
|
13
|
18
|
16
|
25
|
24
|
21
|
17
|
16
|
16
|
19
|
25
|
22
|
18
|
24
|
34
|
21
|
13
|
18
|
22
|
24
|
25
|
42
|
|
|
2025/08
|
18
|
19
|
12
|
15
|
18
|
14
|
13
|
16
|
13
|
10
|
13
|
15
|
15
|
13
|
16
|
10
|
14
|
17
|
18
|
14
|
20
|
12
|
18
|
15
|
22
|
16
|
19
|
21
|
20
|
16
|
26
|
|
2025/07
|
23
|
17
|
17
|
19
|
14
|
16
|
15
|
18
|
18
|
27
|
34
|
20
|
17
|
20
|
24
|
21
|
20
|
19
|
20
|
16
|
14
|
19
|
27
|
26
|
17
|
22
|
17
|
18
|
14
|
12
|
15
|
|
2025/06
|
14
|
20
|
19
|
15
|
16
|
11
|
14
|
20
|
15
|
17
|
14
|
26
|
27
|
17
|
20
|
20
|
17
|
22
|
18
|
16
|
13
|
16
|
26
|
32
|
35
|
36
|
40
|
30
|
21
|
32
|
|
|
2025/05
|
40
|
27
|
22
|
17
|
15
|
20
|
24
|
36
|
24
|
30
|
53
|
85
|
63
|
37
|
59
|
28
|
17
|
19
|
18
|
20
|
18
|
15
|
23
|
24
|
26
|
34
|
36
|
48
|
51
|
47
|
38
|
|
2025/04
|
56
|
46
|
44
|
56
|
49
|
44
|
55
|
38
|
52
|
85
|
58
|
61
|
24
|
20
|
15
|
18
|
47
|
42
|
21
|
61
|
90
|
19
|
31
|
20
|
13
|
16
|
49
|
46
|
60
|
39
|
|
|
2025/03
|
22
|
28
|
38
|
46
|
55
|
50
|
40
|
33
|
58
|
94
|
38
|
42
|
19
|
19
|
19
|
21
|
18
|
17
|
34
|
46
|
14
|
14
|
34
|
25
|
17
|
23
|
15
|
15
|
12
|
17
|
33
|
|
2025/02
|
76
|
129
|
92
|
34
|
40
|
46
|
26
|
19
|
31
|
50
|
70
|
74
|
58
|
36
|
39
|
31
|
24
|
23
|
25
|
28
|
29
|
28
|
35
|
32
|
43
|
28
|
47
|
37
|
|||
|
2025/01
|
124
|
112
|
93
|
134
|
86
|
61
|
71
|
32
|
42
|
82
|
105
|
163
|
144
|
128
|
51
|
44
|
66
|
98
|
128
|
104
|
89
|
74
|
146
|
202
|
193
|
120
|
50
|
54
|
52
|
37
|
54
|
|
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