Air Quality
Excellent
No health implications.
10
PM2.5
15
PM10
70
O3
0.4
CO
6
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Apr
55
Good
Mon
29 Apr
55
Good
Tue
30 Apr
49
Excellent
Wed
1 May
59
Good
Thu
2 May
60
Good
Fri
3 May
60
Good
Sat
4 May
60
Good
Air quality in the last 12 months (Helong)
|
2024/02
|
39
|
36
|
36
|
35
|
41
|
37
|
41
|
41
|
48
|
120
|
55
|
62
|
72
|
67
|
41
|
40
|
50
|
67
|
39
|
29
|
28
|
32
|
36
|
75
|
91
|
53
|
53
|
51
|
56
|
||
|
2024/01
|
84
|
79
|
71
|
77
|
43
|
33
|
25
|
46
|
43
|
47
|
47
|
32
|
44
|
43
|
32
|
42
|
45
|
40
|
41
|
34
|
26
|
37
|
27
|
33
|
36
|
42
|
52
|
52
|
61
|
71
|
50
|
|
2023/12
|
36
|
45
|
43
|
74
|
77
|
65
|
25
|
50
|
41
|
22
|
22
|
31
|
45
|
29
|
24
|
29
|
28
|
42
|
44
|
41
|
36
|
42
|
52
|
60
|
71
|
39
|
47
|
50
|
70
|
86
|
75
|
|
2023/11
|
41
|
37
|
33
|
37
|
31
|
17
|
22
|
29
|
25
|
20
|
20
|
30
|
26
|
37
|
44
|
42
|
24
|
34
|
30
|
34
|
52
|
63
|
25
|
20
|
27
|
30
|
42
|
26
|
25
|
24
|
|
|
2023/10
|
25
|
24
|
27
|
24
|
22
|
22
|
26
|
27
|
29
|
36
|
31
|
29
|
35
|
42
|
38
|
35
|
38
|
38
|
19
|
19
|
22
|
30
|
38
|
57
|
60
|
41
|
34
|
38
|
40
|
63
|
62
|
|
2023/09
|
20
|
26
|
28
|
27
|
29
|
22
|
27
|
32
|
40
|
31
|
26
|
21
|
18
|
20
|
22
|
28
|
19
|
23
|
24
|
19
|
20
|
24
|
21
|
21
|
22
|
25
|
25
|
26
|
22
|
20
|
|
|
2023/08
|
25
|
25
|
22
|
29
|
19
|
14
|
16
|
17
|
16
|
12
|
13
|
16
|
18
|
15
|
17
|
20
|
20
|
24
|
22
|
27
|
21
|
18
|
20
|
25
|
19
|
22
|
23
|
22
|
18
|
15
|
18
|
|
2023/07
|
21
|
33
|
30
|
28
|
26
|
25
|
25
|
26
|
23
|
22
|
23
|
23
|
28
|
22
|
15
|
15
|
17
|
22
|
29
|
37
|
32
|
25
|
18
|
22
|
25
|
23
|
24
|
16
|
17
|
15
|
23
|
|
2023/06
|
57
|
30
|
24
|
26
|
28
|
25
|
25
|
25
|
23
|
26
|
30
|
27
|
24
|
30
|
33
|
41
|
52
|
43
|
32
|
23
|
20
|
18
|
25
|
22
|
29
|
25
|
20
|
36
|
36
|
30
|
|
|
2023/05
|
33
|
37
|
54
|
52
|
37
|
27
|
30
|
42
|
47
|
35
|
37
|
41
|
33
|
30
|
40
|
40
|
35
|
28
|
30
|
26
|
79
|
33
|
30
|
35
|
39
|
33
|
33
|
43
|
36
|
31
|
30
|
|
2023/04
|
55
|
50
|
58
|
69
|
56
|
60
|
100
|
51
|
49
|
74
|
215
|
194
|
169
|
62
|
55
|
33
|
53
|
67
|
88
|
125
|
250
|
52
|
42
|
44
|
50
|
32
|
33
|
41
|
33
|
27
|
|
|
2023/03
|
46
|
38
|
49
|
54
|
60
|
76
|
86
|
57
|
28
|
37
|
65
|
39
|
34
|
41
|
41
|
43
|
36
|
43
|
45
|
49
|
58
|
60
|
177
|
85
|
58
|
42
|
49
|
47
|
52
|
62
|
50
|
|
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