Air Quality
Excellent
No health implications.
6
PM2.5
16
PM10
49
O3
0.7
CO
5
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
3 Dec
55
Good
Thu
4 Dec
55
Good
Fri
5 Dec
43
Excellent
Sat
6 Dec
49
Excellent
Sun
7 Dec
45
Excellent
Mon
8 Dec
52
Good
Tue
9 Dec
34
Excellent
Air quality in the last 12 months (Helong)
|
2025/11
|
27
|
23
|
34
|
47
|
44
|
48
|
36
|
33
|
29
|
26
|
45
|
42
|
32
|
59
|
47
|
33
|
39
|
40
|
34
|
39
|
41
|
46
|
64
|
115
|
215
|
111
|
64
|
34
|
37
|
38
|
|
|
2025/10
|
23
|
33
|
31
|
32
|
23
|
20
|
25
|
37
|
25
|
26
|
17
|
23
|
31
|
49
|
38
|
42
|
28
|
18
|
17
|
22
|
29
|
31
|
37
|
41
|
45
|
42
|
42
|
59
|
62
|
42
|
25
|
|
2025/09
|
11
|
16
|
24
|
26
|
28
|
18
|
20
|
22
|
20
|
22
|
20
|
28
|
32
|
31
|
23
|
27
|
18
|
19
|
22
|
19
|
25
|
23
|
31
|
18
|
27
|
28
|
22
|
18
|
27
|
26
|
|
|
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
|
|
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