Air Quality
Excellent
No health implications.
20
PM2.5
29
PM10
54
O3
0.5
CO
1
SO2
22
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
10 May
53
Good
Sun
11 May
76
Good
Mon
12 May
96
Good
Tue
13 May
105
Light
Wed
14 May
67
Good
Thu
15 May
80
Good
Fri
16 May
40
Excellent
Air quality in the last 12 months (Huairou)
|
2025/02
|
88
|
55
|
7
|
11
|
17
|
28
|
16
|
10
|
12
|
47
|
104
|
18
|
43
|
47
|
68
|
26
|
14
|
18
|
14
|
13
|
12
|
10
|
10
|
27
|
31
|
36
|
91
|
122
|
|||
|
2025/01
|
35
|
17
|
26
|
40
|
30
|
8
|
8
|
8
|
19
|
16
|
19
|
21
|
33
|
9
|
25
|
43
|
49
|
58
|
30
|
38
|
29
|
38
|
76
|
103
|
145
|
105
|
12
|
15
|
45
|
32
|
69
|
|
2024/12
|
37
|
10
|
27
|
15
|
15
|
13
|
8
|
14
|
24
|
23
|
23
|
50
|
14
|
15
|
23
|
23
|
11
|
12
|
33
|
32
|
10
|
16
|
18
|
48
|
50
|
17
|
11
|
34
|
49
|
51
|
31
|
|
2024/11
|
126
|
130
|
72
|
7
|
23
|
31
|
79
|
150
|
160
|
107
|
52
|
62
|
72
|
52
|
66
|
38
|
17
|
30
|
50
|
57
|
21
|
26
|
47
|
81
|
48
|
6
|
8
|
9
|
15
|
27
|
|
|
2024/10
|
6
|
11
|
21
|
60
|
76
|
69
|
16
|
12
|
63
|
9
|
36
|
75
|
97
|
110
|
36
|
38
|
50
|
24
|
9
|
25
|
53
|
17
|
29
|
54
|
134
|
176
|
29
|
22
|
82
|
49
|
90
|
|
2024/09
|
17
|
11
|
30
|
53
|
14
|
11
|
11
|
17
|
46
|
11
|
11
|
12
|
20
|
18
|
14
|
21
|
14
|
21
|
44
|
18
|
6
|
8
|
24
|
47
|
30
|
19
|
38
|
35
|
59
|
7
|
|
|
2024/08
|
9
|
30
|
26
|
30
|
9
|
37
|
59
|
34
|
44
|
21
|
18
|
6
|
12
|
20
|
32
|
36
|
32
|
18
|
14
|
12
|
13
|
16
|
26
|
20
|
23
|
12
|
15
|
21
|
31
|
40
|
45
|
|
2024/07
|
19
|
30
|
27
|
49
|
79
|
38
|
24
|
36
|
58
|
69
|
78
|
26
|
47
|
63
|
63
|
44
|
11
|
17
|
36
|
24
|
48
|
19
|
56
|
51
|
17
|
16
|
29
|
24
|
41
|
10
|
17
|
|
2024/06
|
27
|
32
|
43
|
55
|
59
|
58
|
42
|
29
|
36
|
49
|
32
|
37
|
47
|
38
|
15
|
45
|
56
|
61
|
98
|
72
|
53
|
111
|
153
|
16
|
24
|
58
|
63
|
58
|
58
|
29
|
|
|
2024/05
|
38
|
57
|
56
|
61
|
95
|
53
|
44
|
60
|
69
|
119
|
146
|
34
|
37
|
48
|
28
|
51
|
63
|
70
|
73
|
25
|
44
|
77
|
74
|
36
|
24
|
16
|
32
|
43
|
60
|
34
|
10
|
|
2024/04
|
83
|
82
|
69
|
69
|
62
|
64
|
41
|
77
|
60
|
60
|
103
|
147
|
89
|
61
|
73
|
48
|
76
|
73
|
62
|
35
|
74
|
73
|
16
|
43
|
90
|
89
|
71
|
28
|
13
|
19
|
|
|
2024/03
|
26
|
54
|
36
|
49
|
68
|
31
|
41
|
13
|
47
|
103
|
66
|
22
|
55
|
43
|
106
|
110
|
36
|
120
|
68
|
42
|
72
|
46
|
65
|
95
|
79
|
107
|
133
|
167
|
92
|
33
|
76
|
|
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