Air Quality
Excellent
No health implications.
11
PM2.5
17
PM10
37
O3
0.4
CO
4
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Dec
61
Good
Wed
17 Dec
102
Light
Thu
18 Dec
101
Light
Fri
19 Dec
66
Good
Sat
20 Dec
58
Good
Sun
21 Dec
27
Excellent
Mon
22 Dec
20
Excellent
Air quality in the last 12 months (Bei'an)
|
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
|
|
2024/12
|
50
|
28
|
29
|
26
|
33
|
23
|
33
|
40
|
91
|
97
|
33
|
54
|
80
|
59
|
42
|
35
|
40
|
47
|
69
|
123
|
53
|
42
|
39
|
50
|
50
|
31
|
40
|
51
|
58
|
76
|
94
|
|
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