Air Quality
Excellent
No health implications.
11
PM2.5
33
PM10
122
O3
0.4
CO
7
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Apr
52
Good
Fri
18 Apr
46
Excellent
Sat
19 Apr
54
Good
Sun
20 Apr
59
Good
Mon
21 Apr
61
Good
Tue
22 Apr
56
Good
Wed
23 Apr
44
Excellent
Air quality in the last 12 months (Helong)
|
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
|
|
|
2024/08
|
21
|
20
|
19
|
16
|
14
|
14
|
17
|
25
|
25
|
22
|
11
|
11
|
19
|
30
|
22
|
18
|
17
|
23
|
22
|
10
|
12
|
13
|
12
|
28
|
35
|
25
|
18
|
19
|
24
|
23
|
17
|
|
2024/07
|
32
|
29
|
12
|
24
|
26
|
23
|
13
|
30
|
43
|
48
|
56
|
65
|
56
|
48
|
42
|
32
|
19
|
16
|
22
|
31
|
23
|
21
|
16
|
16
|
16
|
11
|
13
|
12
|
13
|
17
|
21
|
|
2024/06
|
14
|
13
|
15
|
23
|
21
|
21
|
23
|
20
|
16
|
18
|
31
|
24
|
20
|
13
|
15
|
19
|
28
|
20
|
34
|
30
|
33
|
13
|
11
|
18
|
11
|
19
|
26
|
44
|
39
|
31
|
|
|
2024/05
|
29
|
49
|
57
|
45
|
43
|
24
|
26
|
23
|
40
|
38
|
35
|
33
|
40
|
44
|
17
|
23
|
28
|
51
|
21
|
11
|
18
|
35
|
29
|
17
|
19
|
13
|
10
|
14
|
19
|
17
|
16
|
|
2024/04
|
75
|
65
|
57
|
38
|
32
|
51
|
55
|
52
|
44
|
58
|
48
|
41
|
43
|
48
|
41
|
182
|
64
|
52
|
62
|
79
|
45
|
35
|
26
|
18
|
53
|
62
|
48
|
27
|
20
|
23
|
|
|
2024/03
|
67
|
47
|
42
|
45
|
38
|
37
|
38
|
45
|
32
|
48
|
65
|
33
|
52
|
54
|
117
|
52
|
46
|
37
|
37
|
30
|
30
|
37
|
32
|
34
|
26
|
35
|
40
|
67
|
90
|
54
|
56
|
|
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