Air Quality
Excellent
No health implications.
5
PM2.5
18
PM10
29
O3
0.5
CO
6
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Aug
46
Excellent
Sun
17 Aug
47
Excellent
Mon
18 Aug
44
Excellent
Tue
19 Aug
52
Good
Wed
20 Aug
51
Good
Thu
21 Aug
58
Good
Fri
22 Aug
30
Excellent
Air quality in the last 12 months (Longwan)
|
2025/06
|
37
|
50
|
21
|
32
|
36
|
39
|
39
|
36
|
32
|
18
|
7
|
29
|
22
|
33
|
29
|
20
|
43
|
34
|
25
|
22
|
34
|
37
|
21
|
34
|
31
|
30
|
28
|
24
|
20
|
15
|
|
|
2025/05
|
38
|
45
|
59
|
30
|
36
|
48
|
57
|
54
|
51
|
29
|
31
|
40
|
31
|
34
|
31
|
38
|
48
|
18
|
36
|
40
|
27
|
26
|
39
|
25
|
58
|
44
|
23
|
37
|
20
|
46
|
46
|
|
2025/04
|
32
|
52
|
57
|
50
|
45
|
56
|
57
|
58
|
62
|
54
|
48
|
56
|
85
|
91
|
68
|
57
|
80
|
62
|
49
|
45
|
49
|
41
|
26
|
41
|
27
|
45
|
50
|
44
|
44
|
41
|
|
|
2025/03
|
52
|
54
|
52
|
31
|
21
|
19
|
40
|
54
|
53
|
44
|
56
|
47
|
32
|
35
|
22
|
29
|
44
|
47
|
47
|
58
|
50
|
53
|
58
|
74
|
76
|
57
|
58
|
28
|
44
|
28
|
26
|
|
2025/02
|
30
|
12
|
42
|
72
|
49
|
53
|
47
|
35
|
35
|
43
|
41
|
41
|
74
|
41
|
48
|
71
|
71
|
27
|
48
|
28
|
19
|
38
|
27
|
90
|
98
|
78
|
75
|
50
|
|||
|
2025/01
|
76
|
47
|
50
|
47
|
48
|
69
|
75
|
69
|
62
|
40
|
46
|
56
|
61
|
62
|
82
|
46
|
61
|
60
|
55
|
72
|
101
|
74
|
46
|
27
|
33
|
30
|
30
|
45
|
76
|
43
|
44
|
|
2024/12
|
57
|
57
|
54
|
51
|
48
|
32
|
30
|
58
|
35
|
47
|
24
|
31
|
17
|
96
|
85
|
55
|
56
|
57
|
35
|
35
|
55
|
58
|
40
|
36
|
41
|
85
|
124
|
59
|
56
|
57
|
70
|
|
2024/11
|
11
|
17
|
43
|
49
|
45
|
25
|
29
|
35
|
40
|
31
|
25
|
37
|
34
|
38
|
16
|
19
|
18
|
14
|
15
|
25
|
37
|
30
|
38
|
30
|
36
|
15
|
39
|
41
|
47
|
47
|
|
|
2024/10
|
16
|
10
|
18
|
17
|
23
|
18
|
13
|
18
|
43
|
48
|
52
|
43
|
32
|
45
|
33
|
31
|
39
|
38
|
32
|
14
|
37
|
43
|
29
|
31
|
25
|
20
|
20
|
19
|
49
|
29
|
23
|
|
2024/09
|
37
|
30
|
23
|
23
|
25
|
17
|
18
|
15
|
29
|
34
|
31
|
31
|
18
|
20
|
23
|
21
|
20
|
24
|
17
|
22
|
28
|
13
|
18
|
18
|
15
|
22
|
26
|
37
|
31
|
23
|
|
|
2024/08
|
32
|
49
|
47
|
45
|
30
|
27
|
37
|
35
|
39
|
41
|
51
|
45
|
38
|
32
|
23
|
24
|
20
|
19
|
15
|
20
|
20
|
28
|
41
|
38
|
28
|
23
|
43
|
29
|
33
|
26
|
30
|
|
2024/07
|
35
|
28
|
30
|
26
|
35
|
27
|
34
|
28
|
32
|
43
|
48
|
45
|
37
|
35
|
19
|
20
|
23
|
34
|
31
|
19
|
18
|
16
|
19
|
20
|
22
|
23
|
17
|
22
|
21
|
15
|
19
|
|
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