Air Quality
Excellent
No health implications.
21
PM2.5
41
PM10
84
O3
0.4
CO
9
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Jul
71
Good
Fri
18 Jul
70
Good
Sat
19 Jul
71
Good
Sun
20 Jul
76
Good
Mon
21 Jul
61
Good
Tue
22 Jul
18
Excellent
Wed
23 Jul
19
Excellent
Air quality in the last 12 months (Baijiantan)
|
2025/06
|
29
|
31
|
36
|
36
|
32
|
36
|
42
|
60
|
46
|
36
|
43
|
37
|
35
|
44
|
37
|
36
|
35
|
27
|
41
|
32
|
31
|
26
|
56
|
49
|
33
|
44
|
32
|
27
|
17
|
25
|
|
|
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
|
|
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