Air Quality
Excellent
No health implications.
9
PM2.5
35
PM10
33
O3
0.5
CO
2
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
8 Dec
61
Good
Tue
9 Dec
106
Light
Wed
10 Dec
124
Light
Thu
11 Dec
69
Good
Fri
12 Dec
60
Good
Sat
13 Dec
32
Excellent
Sun
14 Dec
23
Excellent
Air quality in the last 12 months (Haidian)
|
2025/11
|
30
|
22
|
59
|
78
|
166
|
175
|
84
|
62
|
27
|
43
|
77
|
91
|
30
|
61
|
79
|
24
|
16
|
26
|
56
|
32
|
73
|
67
|
86
|
48
|
34
|
68
|
30
|
68
|
92
|
91
|
|
|
2025/10
|
47
|
49
|
44
|
47
|
44
|
19
|
45
|
23
|
8
|
12
|
17
|
37
|
51
|
45
|
71
|
68
|
25
|
12
|
15
|
21
|
31
|
49
|
71
|
95
|
135
|
25
|
39
|
98
|
182
|
142
|
56
|
|
2025/09
|
21
|
40
|
45
|
51
|
49
|
25
|
32
|
33
|
52
|
44
|
53
|
60
|
50
|
30
|
25
|
22
|
21
|
28
|
33
|
44
|
48
|
28
|
50
|
57
|
41
|
50
|
53
|
43
|
38
|
41
|
|
|
2025/08
|
45
|
51
|
28
|
33
|
28
|
35
|
22
|
36
|
15
|
24
|
42
|
43
|
23
|
32
|
43
|
18
|
34
|
32
|
22
|
22
|
32
|
22
|
19
|
16
|
22
|
24
|
22
|
14
|
37
|
30
|
28
|
|
2025/07
|
36
|
32
|
25
|
29
|
17
|
12
|
36
|
34
|
48
|
29
|
48
|
49
|
18
|
38
|
49
|
42
|
16
|
37
|
61
|
22
|
26
|
39
|
33
|
26
|
24
|
45
|
38
|
27
|
7
|
16
|
36
|
|
2025/06
|
65
|
19
|
14
|
27
|
57
|
36
|
28
|
51
|
47
|
29
|
57
|
74
|
64
|
49
|
14
|
17
|
44
|
64
|
36
|
29
|
22
|
38
|
55
|
58
|
61
|
59
|
62
|
47
|
64
|
51
|
|
|
2025/05
|
27
|
36
|
22
|
51
|
50
|
29
|
71
|
97
|
32
|
43
|
59
|
74
|
82
|
29
|
45
|
64
|
51
|
45
|
56
|
95
|
73
|
63
|
47
|
36
|
59
|
57
|
46
|
56
|
68
|
67
|
83
|
|
2025/04
|
45
|
23
|
65
|
67
|
24
|
69
|
56
|
45
|
53
|
76
|
109
|
87
|
57
|
57
|
57
|
99
|
58
|
24
|
43
|
66
|
79
|
26
|
52
|
32
|
56
|
85
|
23
|
59
|
61
|
44
|
|
|
2025/03
|
218
|
75
|
39
|
50
|
76
|
20
|
78
|
116
|
147
|
146
|
212
|
62
|
98
|
67
|
52
|
20
|
33
|
38
|
45
|
36
|
29
|
51
|
114
|
88
|
49
|
77
|
49
|
27
|
22
|
46
|
67
|
|
2025/02
|
92
|
51
|
10
|
17
|
25
|
60
|
21
|
14
|
20
|
63
|
120
|
26
|
60
|
63
|
83
|
29
|
20
|
34
|
24
|
16
|
20
|
17
|
20
|
50
|
46
|
55
|
108
|
130
|
|||
|
2025/01
|
44
|
23
|
38
|
59
|
49
|
17
|
14
|
14
|
16
|
25
|
37
|
35
|
52
|
22
|
29
|
48
|
67
|
79
|
34
|
56
|
42
|
59
|
79
|
115
|
140
|
100
|
19
|
21
|
88
|
63
|
76
|
|
2024/12
|
55
|
16
|
37
|
35
|
19
|
28
|
15
|
32
|
56
|
44
|
42
|
71
|
29
|
25
|
34
|
36
|
20
|
18
|
44
|
39
|
17
|
33
|
50
|
68
|
59
|
28
|
20
|
39
|
63
|
67
|
48
|
|
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