Air Quality
Excellent
No health implications.
12
PM2.5
24
PM10
104
O3
0.4
CO
5
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Apr
49
Excellent
Wed
1 May
57
Good
Thu
2 May
57
Good
Fri
3 May
59
Good
Sat
4 May
63
Good
Sun
5 May
56
Good
Mon
6 May
57
Good
Air quality in the last 12 months (Yanji)
|
2024/02
|
32
|
36
|
33
|
40
|
41
|
44
|
35
|
41
|
95
|
204
|
80
|
75
|
75
|
95
|
37
|
41
|
53
|
62
|
32
|
25
|
23
|
26
|
32
|
56
|
72
|
42
|
42
|
43
|
52
|
||
|
2024/01
|
87
|
91
|
96
|
95
|
47
|
38
|
29
|
61
|
44
|
51
|
53
|
29
|
45
|
37
|
25
|
43
|
48
|
34
|
34
|
31
|
21
|
34
|
24
|
31
|
28
|
47
|
55
|
69
|
79
|
77
|
53
|
|
2023/12
|
31
|
47
|
43
|
99
|
94
|
94
|
26
|
44
|
35
|
20
|
22
|
26
|
29
|
22
|
41
|
25
|
23
|
34
|
56
|
28
|
34
|
27
|
61
|
91
|
76
|
44
|
47
|
70
|
84
|
116
|
65
|
|
2023/11
|
43
|
39
|
37
|
38
|
42
|
20
|
28
|
27
|
28
|
27
|
31
|
27
|
31
|
53
|
64
|
57
|
34
|
34
|
36
|
37
|
65
|
84
|
29
|
21
|
29
|
37
|
43
|
29
|
31
|
27
|
|
|
2023/10
|
35
|
38
|
30
|
34
|
37
|
43
|
35
|
31
|
44
|
48
|
48
|
41
|
55
|
56
|
55
|
40
|
44
|
46
|
30
|
27
|
37
|
42
|
47
|
74
|
77
|
53
|
46
|
45
|
53
|
74
|
79
|
|
2023/09
|
29
|
35
|
29
|
26
|
33
|
29
|
31
|
34
|
47
|
36
|
29
|
31
|
26
|
26
|
25
|
27
|
19
|
20
|
30
|
19
|
32
|
42
|
32
|
26
|
24
|
29
|
34
|
46
|
28
|
33
|
|
|
2023/08
|
57
|
28
|
55
|
48
|
16
|
15
|
17
|
16
|
14
|
13
|
15
|
15
|
20
|
16
|
17
|
20
|
22
|
23
|
28
|
34
|
25
|
22
|
26
|
28
|
21
|
23
|
28
|
22
|
19
|
23
|
28
|
|
2023/07
|
19
|
33
|
29
|
25
|
25
|
23
|
24
|
22
|
22
|
26
|
24
|
26
|
31
|
23
|
15
|
15
|
20
|
24
|
28
|
34
|
25
|
18
|
16
|
23
|
27
|
31
|
33
|
34
|
38
|
47
|
49
|
|
2023/06
|
72
|
32
|
29
|
29
|
33
|
31
|
30
|
26
|
26
|
26
|
29
|
27
|
29
|
30
|
36
|
48
|
59
|
35
|
27
|
23
|
21
|
21
|
25
|
23
|
29
|
21
|
21
|
37
|
46
|
26
|
|
|
2023/05
|
34
|
36
|
51
|
51
|
37
|
29
|
36
|
49
|
56
|
29
|
36
|
33
|
30
|
29
|
28
|
34
|
35
|
28
|
31
|
25
|
79
|
37
|
33
|
35
|
38
|
44
|
33
|
45
|
34
|
25
|
31
|
|
2023/04
|
56
|
40
|
48
|
56
|
57
|
41
|
96
|
55
|
55
|
73
|
186
|
137
|
143
|
54
|
51
|
35
|
51
|
65
|
87
|
124
|
242
|
56
|
48
|
51
|
54
|
32
|
38
|
46
|
31
|
30
|
|
|
2023/03
|
41
|
39
|
42
|
46
|
56
|
86
|
90
|
56
|
27
|
29
|
47
|
34
|
35
|
40
|
35
|
40
|
41
|
45
|
53
|
47
|
61
|
59
|
140
|
90
|
62
|
42
|
53
|
50
|
50
|
63
|
53
|
|
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