Air Quality
Excellent
No health implications.
30
PM2.5
34
PM10
112
O3
0.5
CO
15
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Jun
67
Good
Mon
16 Jun
64
Good
Tue
17 Jun
62
Good
Wed
18 Jun
61
Good
Thu
19 Jun
61
Good
Fri
20 Jun
67
Good
Sat
21 Jun
41
Excellent
Air quality in the last 12 months (Baijiantan)
|
2025/05
|
23
|
33
|
22
|
20
|
27
|
39
|
28
|
17
|
32
|
58
|
45
|
29
|
29
|
31
|
54
|
46
|
42
|
104
|
64
|
25
|
30
|
33
|
37
|
45
|
31
|
38
|
38
|
31
|
40
|
35
|
35
|
|
2025/04
|
37
|
18
|
15
|
18
|
43
|
18
|
29
|
41
|
58
|
14
|
22
|
13
|
35
|
53
|
24
|
17
|
13
|
25
|
28
|
13
|
23
|
38
|
41
|
19
|
20
|
15
|
23
|
39
|
45
|
45
|
|
|
2025/03
|
39
|
38
|
39
|
44
|
32
|
23
|
29
|
26
|
19
|
37
|
25
|
13
|
17
|
13
|
14
|
30
|
38
|
48
|
40
|
44
|
58
|
65
|
19
|
18
|
13
|
16
|
13
|
12
|
21
|
22
|
31
|
|
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
|
|
|
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