Air Quality
Excellent
No health implications.
13
PM2.5
18
PM10
49
O3
0.5
CO
5
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
26 Oct
34
Excellent
Mon
27 Oct
41
Excellent
Tue
28 Oct
47
Excellent
Wed
29 Oct
41
Excellent
Thu
30 Oct
48
Excellent
Fri
31 Oct
63
Good
Sat
1 Nov
20
Excellent
Air quality in the last 12 months (Helong)
|
2025/08
|
24
|
18
|
21
|
13
|
18
|
12
|
14
|
13
|
19
|
20
|
19
|
30
|
26
|
22
|
27
|
28
|
16
|
19
|
23
|
17
|
18
|
24
|
19
|
19
|
14
|
10
|
12
|
14
|
10
|
14
|
12
|
|
2025/07
|
16
|
20
|
27
|
22
|
27
|
39
|
29
|
34
|
33
|
35
|
22
|
31
|
25
|
14
|
17
|
17
|
20
|
15
|
19
|
16
|
15
|
31
|
30
|
18
|
24
|
20
|
23
|
20
|
26
|
30
|
25
|
|
2025/06
|
44
|
39
|
22
|
15
|
37
|
43
|
41
|
22
|
40
|
18
|
16
|
22
|
39
|
38
|
38
|
15
|
17
|
29
|
32
|
19
|
18
|
26
|
30
|
40
|
39
|
34
|
42
|
47
|
42
|
28
|
|
|
2025/05
|
21
|
22
|
16
|
13
|
18
|
23
|
40
|
49
|
44
|
18
|
24
|
39
|
55
|
48
|
22
|
28
|
20
|
23
|
21
|
21
|
36
|
46
|
22
|
38
|
27
|
21
|
31
|
27
|
36
|
40
|
40
|
|
2025/04
|
53
|
42
|
31
|
37
|
35
|
27
|
22
|
34
|
40
|
44
|
51
|
38
|
14
|
14
|
23
|
22
|
30
|
32
|
28
|
23
|
34
|
18
|
19
|
40
|
55
|
53
|
59
|
40
|
60
|
42
|
|
|
2025/03
|
98
|
23
|
24
|
31
|
33
|
44
|
49
|
46
|
65
|
75
|
95
|
96
|
61
|
34
|
48
|
29
|
35
|
39
|
50
|
46
|
57
|
31
|
33
|
61
|
86
|
45
|
35
|
27
|
26
|
28
|
40
|
|
2025/02
|
45
|
53
|
44
|
31
|
33
|
23
|
27
|
24
|
32
|
35
|
52
|
56
|
47
|
53
|
54
|
58
|
33
|
29
|
27
|
29
|
32
|
32
|
29
|
47
|
119
|
91
|
72
|
78
|
|||
|
2025/01
|
45
|
46
|
40
|
49
|
68
|
44
|
40
|
35
|
38
|
36
|
48
|
47
|
54
|
46
|
32
|
39
|
44
|
60
|
61
|
79
|
68
|
58
|
49
|
51
|
48
|
48
|
34
|
28
|
49
|
34
|
39
|
|
2024/12
|
44
|
22
|
26
|
29
|
25
|
30
|
26
|
32
|
42
|
36
|
25
|
39
|
44
|
43
|
42
|
33
|
46
|
33
|
45
|
51
|
38
|
34
|
32
|
36
|
49
|
67
|
34
|
37
|
35
|
58
|
39
|
|
2024/11
|
44
|
41
|
36
|
28
|
18
|
31
|
34
|
44
|
60
|
52
|
101
|
48
|
43
|
56
|
55
|
27
|
35
|
27
|
31
|
47
|
41
|
28
|
40
|
48
|
49
|
24
|
18
|
32
|
26
|
25
|
|
|
2024/10
|
8
|
19
|
23
|
22
|
25
|
43
|
17
|
26
|
30
|
32
|
28
|
32
|
33
|
32
|
18
|
21
|
39
|
36
|
30
|
29
|
38
|
44
|
20
|
31
|
38
|
50
|
39
|
27
|
31
|
42
|
46
|
|
2024/09
|
23
|
13
|
21
|
23
|
14
|
15
|
23
|
16
|
21
|
18
|
18
|
18
|
18
|
14
|
17
|
22
|
19
|
21
|
30
|
13
|
11
|
13
|
17
|
17
|
22
|
17
|
22
|
21
|
23
|
23
|
|
|
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