Air Quality
Excellent
No health implications.
19
PM2.5
38
PM10
21
O3
0.5
CO
3
SO2
43
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Dec
59
Good
Wed
17 Dec
103
Light
Thu
18 Dec
164
Moderate
Fri
19 Dec
151
Moderate
Sat
20 Dec
43
Excellent
Sun
21 Dec
43
Excellent
Mon
22 Dec
18
Excellent
Haidian Air quality rank
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