Air Quality
Excellent
No health implications.
3
PM2.5
17
PM10
75
O3
0.2
CO
10
SO2
2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 May
58
Good
Fri
2 May
51
Good
Sat
3 May
52
Good
Sun
4 May
52
Good
Mon
5 May
54
Good
Tue
6 May
59
Good
Wed
7 May
30
Excellent
Air quality in the last 12 months (Baijiantan)
|
2025/02
|
100
|
69
|
50
|
40
|
38
|
73
|
91
|
110
|
107
|
133
|
86
|
59
|
86
|
100
|
87
|
112
|
138
|
86
|
55
|
59
|
72
|
71
|
61
|
67
|
73
|
74
|
83
|
62
|
|||
|
2025/01
|
135
|
123
|
150
|
155
|
69
|
44
|
44
|
60
|
68
|
66
|
51
|
39
|
46
|
42
|
53
|
62
|
91
|
112
|
133
|
126
|
122
|
122
|
102
|
52
|
21
|
21
|
25
|
56
|
78
|
93
|
77
|
|
2024/12
|
67
|
108
|
61
|
22
|
34
|
31
|
26
|
28
|
34
|
20
|
25
|
28
|
28
|
42
|
51
|
69
|
64
|
41
|
37
|
64
|
62
|
78
|
82
|
85
|
56
|
44
|
43
|
58
|
83
|
106
|
129
|
|
2024/11
|
28
|
35
|
30
|
31
|
38
|
54
|
30
|
15
|
11
|
18
|
26
|
35
|
19
|
26
|
15
|
25
|
34
|
42
|
50
|
43
|
56
|
60
|
23
|
21
|
22
|
30
|
31
|
29
|
31
|
44
|
|
|
2024/10
|
32
|
40
|
39
|
31
|
25
|
32
|
45
|
30
|
28
|
33
|
47
|
37
|
26
|
20
|
20
|
17
|
21
|
13
|
14
|
14
|
16
|
20
|
27
|
13
|
23
|
16
|
29
|
35
|
20
|
14
|
25
|
|
2024/09
|
27
|
19
|
16
|
15
|
17
|
25
|
15
|
19
|
21
|
20
|
27
|
19
|
16
|
17
|
25
|
21
|
21
|
34
|
25
|
32
|
43
|
40
|
27
|
34
|
31
|
23
|
27
|
26
|
19
|
17
|
|
|
2024/08
|
28
|
24
|
33
|
30
|
30
|
24
|
28
|
24
|
28
|
35
|
28
|
16
|
20
|
16
|
25
|
29
|
27
|
27
|
19
|
19
|
31
|
24
|
25
|
36
|
28
|
22
|
25
|
35
|
27
|
29
|
22
|
|
2024/07
|
24
|
24
|
26
|
24
|
21
|
24
|
20
|
24
|
25
|
20
|
23
|
22
|
28
|
31
|
24
|
26
|
19
|
19
|
15
|
19
|
16
|
19
|
18
|
22
|
24
|
22
|
20
|
21
|
32
|
29
|
32
|
|
2024/06
|
19
|
20
|
22
|
17
|
19
|
18
|
20
|
21
|
26
|
24
|
26
|
28
|
22
|
21
|
23
|
22
|
22
|
20
|
28
|
26
|
23
|
28
|
36
|
41
|
31
|
27
|
31
|
24
|
21
|
30
|
|
|
2024/05
|
35
|
31
|
46
|
32
|
32
|
37
|
27
|
29
|
20
|
27
|
26
|
36
|
37
|
36
|
33
|
53
|
35
|
31
|
32
|
27
|
15
|
15
|
12
|
12
|
13
|
15
|
15
|
14
|
23
|
18
|
25
|
|
2024/04
|
17
|
23
|
30
|
18
|
18
|
18
|
33
|
28
|
34
|
29
|
13
|
62
|
200
|
191
|
155
|
85
|
43
|
31
|
31
|
37
|
38
|
25
|
33
|
41
|
58
|
55
|
29
|
24
|
21
|
34
|
|
|
2024/03
|
35
|
47
|
62
|
62
|
43
|
49
|
47
|
71
|
61
|
50
|
54
|
50
|
38
|
21
|
22
|
22
|
38
|
24
|
28
|
36
|
31
|
22
|
25
|
21
|
20
|
16
|
22
|
26
|
29
|
21
|
26
|
|
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