Air Quality
Excellent
No health implications.
9
PM2.5
12
PM10
120
O3
0.5
CO
2
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 May
96
Good
Thu
22 May
77
Good
Fri
23 May
46
Excellent
Sat
24 May
78
Good
Sun
25 May
95
Good
Mon
26 May
117
Light
Tue
27 May
25
Excellent
Air quality in the last 12 months (Huqiu)
|
2025/04
|
42
|
59
|
42
|
51
|
64
|
66
|
65
|
58
|
73
|
83
|
67
|
127
|
94
|
79
|
51
|
49
|
58
|
60
|
68
|
45
|
45
|
41
|
44
|
67
|
58
|
37
|
43
|
55
|
43
|
51
|
|
|
2025/03
|
44
|
51
|
21
|
18
|
34
|
44
|
57
|
89
|
51
|
59
|
73
|
32
|
33
|
41
|
27
|
42
|
33
|
41
|
53
|
53
|
40
|
43
|
55
|
57
|
77
|
87
|
71
|
62
|
65
|
45
|
34
|
|
2025/02
|
26
|
63
|
74
|
65
|
43
|
40
|
50
|
34
|
43
|
61
|
40
|
94
|
59
|
40
|
90
|
89
|
62
|
41
|
54
|
38
|
34
|
61
|
83
|
76
|
117
|
103
|
94
|
81
|
|||
|
2025/01
|
83
|
52
|
66
|
56
|
95
|
80
|
68
|
67
|
32
|
50
|
62
|
67
|
76
|
111
|
41
|
56
|
64
|
78
|
93
|
146
|
170
|
74
|
43
|
42
|
27
|
50
|
45
|
44
|
85
|
66
|
53
|
|
2024/12
|
60
|
68
|
72
|
38
|
57
|
116
|
158
|
31
|
53
|
46
|
59
|
55
|
75
|
71
|
59
|
57
|
75
|
76
|
31
|
52
|
79
|
47
|
43
|
60
|
88
|
135
|
55
|
60
|
64
|
79
|
81
|
|
2024/11
|
10
|
48
|
62
|
65
|
35
|
30
|
24
|
28
|
33
|
36
|
39
|
41
|
45
|
38
|
64
|
42
|
21
|
26
|
29
|
35
|
55
|
75
|
19
|
28
|
33
|
31
|
60
|
65
|
45
|
49
|
|
|
2024/10
|
20
|
27
|
22
|
28
|
22
|
14
|
18
|
34
|
42
|
50
|
60
|
54
|
20
|
36
|
56
|
36
|
26
|
33
|
28
|
44
|
26
|
33
|
44
|
25
|
30
|
20
|
19
|
52
|
27
|
30
|
23
|
|
2024/09
|
32
|
35
|
26
|
28
|
26
|
36
|
54
|
41
|
18
|
35
|
9
|
26
|
14
|
21
|
20
|
14
|
16
|
21
|
21
|
11
|
22
|
27
|
27
|
43
|
52
|
24
|
27
|
34
|
34
|
35
|
|
|
2024/08
|
22
|
18
|
39
|
34
|
37
|
36
|
43
|
38
|
40
|
41
|
41
|
29
|
35
|
25
|
22
|
35
|
26
|
20
|
17
|
19
|
23
|
30
|
39
|
26
|
34
|
28
|
27
|
28
|
18
|
28
|
32
|
|
2024/07
|
22
|
23
|
17
|
25
|
21
|
30
|
21
|
28
|
32
|
20
|
25
|
23
|
16
|
18
|
48
|
32
|
30
|
24
|
27
|
28
|
32
|
31
|
26
|
19
|
23
|
18
|
16
|
20
|
17
|
23
|
23
|
|
2024/06
|
25
|
30
|
32
|
47
|
38
|
18
|
20
|
30
|
30
|
17
|
20
|
32
|
47
|
37
|
37
|
29
|
26
|
21
|
17
|
27
|
29
|
13
|
15
|
19
|
26
|
16
|
9
|
14
|
22
|
16
|
|
|
2024/05
|
30
|
32
|
35
|
37
|
28
|
28
|
54
|
36
|
26
|
41
|
53
|
62
|
69
|
54
|
45
|
33
|
50
|
41
|
32
|
31
|
28
|
41
|
37
|
30
|
26
|
34
|
22
|
24
|
27
|
37
|
43
|
|
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