Air Quality
Excellent
No health implications.
28
PM2.5
37
PM10
32
O3
0.6
CO
3
SO2
23
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Feb
60
Good
Sat
28 Feb
58
Good
Sun
1 Mar
80
Good
Mon
2 Mar
94
Good
Tue
3 Mar
95
Good
Wed
4 Mar
46
Excellent
Thu
5 Mar
48
Excellent
Air quality in the last 12 months (Huairou)
|
2026/01
|
17
|
18
|
30
|
33
|
22
|
24
|
16
|
38
|
62
|
16
|
24
|
40
|
24
|
62
|
86
|
60
|
24
|
31
|
11
|
14
|
15
|
21
|
26
|
20
|
31
|
50
|
26
|
55
|
66
|
104
|
68
|
|
2025/12
|
24
|
20
|
21
|
23
|
36
|
76
|
39
|
25
|
44
|
64
|
36
|
41
|
36
|
34
|
58
|
38
|
47
|
162
|
163
|
19
|
24
|
61
|
58
|
17
|
18
|
37
|
53
|
85
|
20
|
18
|
18
|
|
2025/11
|
9
|
11
|
47
|
60
|
152
|
170
|
75
|
47
|
15
|
23
|
59
|
83
|
14
|
40
|
58
|
23
|
15
|
19
|
30
|
23
|
32
|
44
|
72
|
41
|
26
|
51
|
23
|
57
|
84
|
76
|
|
|
2025/10
|
28
|
39
|
32
|
27
|
36
|
16
|
26
|
16
|
8
|
14
|
15
|
24
|
36
|
50
|
48
|
74
|
27
|
12
|
12
|
12
|
13
|
38
|
56
|
87
|
96
|
17
|
22
|
87
|
200
|
139
|
60
|
|
2025/09
|
14
|
40
|
46
|
52
|
54
|
15
|
15
|
12
|
42
|
28
|
50
|
58
|
55
|
17
|
10
|
13
|
8
|
10
|
22
|
24
|
34
|
38
|
24
|
42
|
24
|
32
|
38
|
30
|
16
|
22
|
|
|
2025/08
|
40
|
53
|
17
|
40
|
22
|
24
|
14
|
27
|
7
|
20
|
38
|
27
|
19
|
24
|
43
|
13
|
32
|
40
|
18
|
17
|
34
|
16
|
19
|
14
|
17
|
20
|
16
|
13
|
34
|
30
|
22
|
|
2025/07
|
22
|
35
|
21
|
31
|
16
|
8
|
25
|
39
|
37
|
30
|
46
|
44
|
11
|
25
|
41
|
26
|
10
|
21
|
48
|
16
|
19
|
34
|
39
|
26
|
23
|
46
|
36
|
13
|
7
|
12
|
24
|
|
2025/06
|
55
|
17
|
9
|
17
|
42
|
24
|
20
|
44
|
39
|
22
|
42
|
62
|
57
|
49
|
12
|
12
|
30
|
57
|
33
|
19
|
11
|
22
|
39
|
50
|
65
|
52
|
69
|
45
|
51
|
47
|
|
|
2025/05
|
26
|
26
|
15
|
29
|
51
|
18
|
71
|
94
|
21
|
37
|
52
|
63
|
68
|
25
|
45
|
68
|
36
|
32
|
41
|
79
|
74
|
62
|
42
|
27
|
45
|
47
|
31
|
46
|
65
|
68
|
64
|
|
2025/04
|
19
|
15
|
48
|
54
|
15
|
53
|
50
|
32
|
47
|
62
|
103
|
88
|
75
|
50
|
51
|
92
|
57
|
15
|
28
|
63
|
61
|
22
|
38
|
22
|
39
|
75
|
19
|
43
|
57
|
29
|
|
|
2025/03
|
177
|
63
|
36
|
49
|
64
|
15
|
67
|
105
|
140
|
137
|
195
|
50
|
71
|
70
|
47
|
16
|
16
|
20
|
19
|
16
|
22
|
42
|
115
|
70
|
35
|
75
|
41
|
23
|
15
|
36
|
47
|
|
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
|
|||
|
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