Air Quality
Excellent
No health implications.
3
PM2.5
13
PM10
21
O3
0.9
CO
4
SO2
21
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 Apr
56
Good
Wed
23 Apr
92
Good
Thu
24 Apr
92
Good
Fri
25 Apr
76
Good
Sat
26 Apr
90
Good
Sun
27 Apr
68
Good
Mon
28 Apr
35
Excellent
Air quality in the last 12 months (Xihu)
|
2025/02
|
27
|
52
|
83
|
54
|
39
|
64
|
56
|
31
|
39
|
55
|
85
|
93
|
108
|
70
|
89
|
44
|
70
|
45
|
61
|
46
|
29
|
57
|
91
|
82
|
98
|
88
|
91
|
41
|
|||
|
2025/01
|
96
|
90
|
79
|
87
|
104
|
82
|
72
|
74
|
46
|
46
|
60
|
65
|
82
|
83
|
52
|
48
|
63
|
85
|
81
|
110
|
144
|
144
|
82
|
48
|
35
|
42
|
37
|
44
|
128
|
71
|
62
|
|
2024/12
|
56
|
57
|
111
|
60
|
61
|
90
|
150
|
38
|
55
|
45
|
29
|
76
|
85
|
85
|
54
|
53
|
54
|
82
|
40
|
53
|
83
|
61
|
70
|
62
|
92
|
145
|
65
|
59
|
60
|
81
|
76
|
|
2024/11
|
9
|
28
|
57
|
73
|
38
|
38
|
34
|
43
|
45
|
44
|
50
|
49
|
55
|
51
|
44
|
35
|
21
|
28
|
38
|
45
|
52
|
83
|
45
|
39
|
35
|
28
|
40
|
52
|
41
|
52
|
|
|
2024/10
|
19
|
20
|
28
|
29
|
31
|
15
|
14
|
28
|
39
|
51
|
69
|
63
|
33
|
49
|
46
|
36
|
34
|
32
|
19
|
35
|
50
|
33
|
48
|
41
|
42
|
20
|
11
|
49
|
53
|
44
|
35
|
|
2024/09
|
47
|
53
|
42
|
36
|
34
|
39
|
54
|
35
|
30
|
41
|
16
|
37
|
20
|
25
|
24
|
17
|
16
|
22
|
20
|
17
|
18
|
25
|
30
|
42
|
51
|
58
|
24
|
33
|
33
|
31
|
|
|
2024/08
|
19
|
19
|
40
|
37
|
32
|
36
|
45
|
36
|
38
|
43
|
37
|
26
|
23
|
29
|
30
|
42
|
30
|
40
|
25
|
21
|
15
|
22
|
37
|
43
|
42
|
48
|
47
|
25
|
25
|
30
|
41
|
|
2024/07
|
20
|
22
|
19
|
21
|
22
|
22
|
21
|
24
|
27
|
25
|
39
|
35
|
28
|
27
|
35
|
29
|
32
|
26
|
23
|
26
|
33
|
28
|
26
|
25
|
30
|
20
|
14
|
16
|
15
|
16
|
21
|
|
2024/06
|
15
|
27
|
31
|
49
|
45
|
23
|
33
|
35
|
43
|
25
|
24
|
24
|
39
|
54
|
46
|
46
|
24
|
25
|
15
|
11
|
27
|
23
|
16
|
16
|
16
|
17
|
9
|
14
|
18
|
31
|
|
|
2024/05
|
31
|
36
|
40
|
41
|
27
|
23
|
52
|
54
|
34
|
53
|
48
|
50
|
64
|
57
|
61
|
32
|
47
|
52
|
49
|
50
|
33
|
39
|
59
|
43
|
44
|
25
|
22
|
21
|
30
|
50
|
22
|
|
2024/04
|
66
|
13
|
17
|
38
|
51
|
45
|
34
|
25
|
44
|
72
|
61
|
73
|
44
|
18
|
46
|
84
|
20
|
40
|
52
|
36
|
40
|
26
|
30
|
45
|
44
|
47
|
42
|
46
|
24
|
25
|
|
|
2024/03
|
44
|
56
|
55
|
59
|
38
|
50
|
85
|
70
|
79
|
91
|
63
|
71
|
63
|
87
|
82
|
50
|
74
|
65
|
60
|
72
|
77
|
51
|
57
|
65
|
48
|
27
|
59
|
30
|
31
|
44
|
86
|
|
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