Air Quality
Excellent
No health implications.
22
PM2.5
46
PM10
67
O3
0.5
CO
8
SO2
25
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Apr
100
Good
Thu
1 May
117
Light
Fri
2 May
116
Light
Sat
3 May
111
Light
Sun
4 May
101
Light
Mon
5 May
15
Excellent
Tue
6 May
40
Excellent
Air quality in the last 12 months (Caidian)
|
2025/02
|
75
|
64
|
99
|
95
|
65
|
44
|
76
|
43
|
55
|
68
|
83
|
97
|
125
|
100
|
92
|
84
|
66
|
74
|
71
|
100
|
96
|
89
|
124
|
131
|
127
|
102
|
60
|
61
|
|||
|
2025/01
|
132
|
180
|
202
|
219
|
82
|
84
|
60
|
74
|
49
|
46
|
93
|
84
|
112
|
112
|
63
|
73
|
97
|
97
|
141
|
166
|
157
|
148
|
230
|
106
|
25
|
41
|
55
|
67
|
187
|
84
|
122
|
|
2024/12
|
66
|
84
|
121
|
80
|
52
|
55
|
56
|
64
|
60
|
84
|
96
|
109
|
91
|
58
|
65
|
71
|
95
|
85
|
76
|
106
|
107
|
62
|
77
|
94
|
138
|
157
|
166
|
50
|
59
|
116
|
161
|
|
2024/11
|
75
|
84
|
89
|
85
|
57
|
58
|
55
|
53
|
51
|
50
|
62
|
57
|
60
|
66
|
88
|
61
|
18
|
20
|
25
|
30
|
49
|
64
|
78
|
69
|
32
|
38
|
50
|
59
|
61
|
60
|
|
|
2024/10
|
21
|
52
|
38
|
34
|
43
|
57
|
22
|
31
|
53
|
86
|
92
|
70
|
67
|
69
|
80
|
54
|
28
|
17
|
20
|
35
|
24
|
24
|
44
|
56
|
48
|
40
|
63
|
99
|
80
|
68
|
42
|
|
2024/09
|
44
|
53
|
38
|
46
|
52
|
48
|
41
|
45
|
49
|
42
|
43
|
27
|
26
|
30
|
38
|
25
|
42
|
36
|
24
|
30
|
30
|
24
|
30
|
42
|
63
|
58
|
63
|
33
|
39
|
45
|
|
|
2024/08
|
13
|
17
|
23
|
21
|
22
|
26
|
29
|
34
|
30
|
35
|
83
|
72
|
38
|
37
|
28
|
26
|
35
|
39
|
32
|
25
|
29
|
38
|
34
|
33
|
30
|
38
|
22
|
19
|
36
|
35
|
44
|
|
2024/07
|
25
|
23
|
25
|
16
|
17
|
18
|
19
|
22
|
23
|
23
|
35
|
37
|
19
|
26
|
34
|
33
|
23
|
19
|
16
|
18
|
20
|
23
|
25
|
41
|
32
|
23
|
15
|
10
|
9
|
16
|
18
|
|
2024/06
|
31
|
38
|
34
|
26
|
29
|
39
|
32
|
36
|
27
|
21
|
17
|
30
|
36
|
32
|
35
|
40
|
41
|
33
|
11
|
24
|
18
|
14
|
20
|
26
|
17
|
29
|
20
|
10
|
9
|
15
|
|
|
2024/05
|
46
|
38
|
32
|
26
|
35
|
34
|
50
|
48
|
52
|
51
|
62
|
114
|
84
|
70
|
72
|
58
|
63
|
58
|
66
|
43
|
45
|
28
|
23
|
38
|
36
|
37
|
28
|
25
|
33
|
71
|
48
|
|
2024/04
|
39
|
21
|
57
|
61
|
50
|
35
|
50
|
43
|
37
|
40
|
45
|
39
|
46
|
41
|
50
|
39
|
42
|
42
|
28
|
46
|
67
|
50
|
48
|
105
|
94
|
82
|
54
|
32
|
30
|
35
|
|
|
2024/03
|
57
|
58
|
50
|
39
|
88
|
69
|
76
|
78
|
71
|
94
|
90
|
75
|
61
|
51
|
67
|
80
|
67
|
60
|
65
|
80
|
69
|
62
|
49
|
37
|
26
|
44
|
48
|
54
|
40
|
50
|
49
|
|
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