Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
41
PM2.5
80
*
PM10
26
O3
0.8
CO
8
SO2
66
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
19 May
98
Good
Mon
20 May
88
Good
Tue
21 May
85
Good
Wed
22 May
71
Good
Thu
23 May
91
Good
Fri
24 May
92
Good
Air quality in the last 12 months (Xihu)
|
2024/02
|
31
|
20
|
17
|
25
|
83
|
61
|
102
|
92
|
128
|
161
|
151
|
136
|
82
|
72
|
48
|
38
|
49
|
66
|
61
|
36
|
16
|
28
|
47
|
49
|
75
|
100
|
93
|
61
|
67
|
||
|
2024/01
|
133
|
142
|
73
|
94
|
100
|
83
|
159
|
171
|
142
|
99
|
112
|
113
|
110
|
90
|
203
|
97
|
115
|
56
|
18
|
27
|
83
|
62
|
36
|
51
|
67
|
82
|
87
|
87
|
88
|
82
|
65
|
|
2023/12
|
58
|
56
|
74
|
87
|
97
|
96
|
91
|
91
|
53
|
72
|
29
|
30
|
49
|
72
|
31
|
48
|
43
|
39
|
56
|
73
|
98
|
53
|
56
|
72
|
92
|
92
|
97
|
141
|
244
|
256
|
157
|
|
2023/11
|
70
|
69
|
73
|
78
|
100
|
31
|
47
|
38
|
33
|
46
|
44
|
30
|
75
|
81
|
82
|
63
|
108
|
90
|
88
|
81
|
77
|
81
|
82
|
85
|
65
|
82
|
104
|
93
|
95
|
91
|
|
|
2023/10
|
30
|
34
|
48
|
36
|
45
|
44
|
21
|
21
|
35
|
50
|
54
|
73
|
57
|
67
|
86
|
72
|
67
|
73
|
50
|
42
|
48
|
59
|
66
|
75
|
85
|
57
|
87
|
74
|
68
|
84
|
83
|
|
2023/09
|
37
|
42
|
42
|
43
|
37
|
32
|
28
|
41
|
43
|
55
|
43
|
26
|
23
|
21
|
27
|
30
|
39
|
40
|
34
|
37
|
26
|
26
|
31
|
44
|
41
|
46
|
52
|
51
|
60
|
48
|
|
|
2023/08
|
24
|
29
|
32
|
38
|
55
|
50
|
30
|
32
|
36
|
45
|
49
|
43
|
29
|
31
|
40
|
43
|
49
|
47
|
42
|
41
|
41
|
23
|
37
|
47
|
51
|
49
|
24
|
17
|
29
|
30
|
27
|
|
2023/07
|
34
|
34
|
18
|
24
|
26
|
27
|
28
|
32
|
30
|
36
|
33
|
35
|
34
|
36
|
37
|
48
|
35
|
28
|
20
|
22
|
24
|
19
|
18
|
31
|
31
|
30
|
22
|
16
|
17
|
23
|
23
|
|
2023/06
|
40
|
51
|
66
|
77
|
55
|
36
|
46
|
27
|
39
|
37
|
56
|
62
|
43
|
59
|
57
|
37
|
38
|
30
|
20
|
18
|
26
|
29
|
30
|
24
|
18
|
19
|
26
|
19
|
23
|
29
|
|
|
2023/05
|
91
|
64
|
47
|
30
|
26
|
26
|
42
|
43
|
49
|
56
|
49
|
49
|
69
|
76
|
66
|
56
|
38
|
38
|
58
|
55
|
30
|
49
|
68
|
61
|
53
|
50
|
41
|
39
|
54
|
48
|
31
|
|
2023/04
|
55
|
62
|
36
|
31
|
31
|
29
|
54
|
59
|
69
|
76
|
69
|
88
|
43
|
33
|
78
|
77
|
81
|
40
|
35
|
61
|
50
|
49
|
25
|
17
|
36
|
34
|
47
|
47
|
119
|
116
|
|
|
2023/03
|
76
|
109
|
96
|
135
|
109
|
82
|
87
|
97
|
87
|
80
|
69
|
107
|
81
|
76
|
71
|
118
|
36
|
36
|
32
|
36
|
27
|
21
|
38
|
58
|
57
|
43
|
85
|
73
|
70
|
66
|
57
|
|
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