Air Quality
Excellent
No health implications.
17
PM2.5
38
PM10
84
O3
0.4
CO
5
SO2
33
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Apr
81
Good
Wed
30 Apr
82
Good
Thu
1 May
100
Good
Fri
2 May
108
Light
Sat
3 May
104
Light
Sun
4 May
43
Excellent
Mon
5 May
20
Excellent
Air quality in the last 12 months (Longwan)
|
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
|
|
2024/06
|
9
|
14
|
26
|
44
|
36
|
16
|
25
|
41
|
28
|
19
|
30
|
34
|
30
|
41
|
27
|
21
|
22
|
20
|
33
|
47
|
42
|
45
|
54
|
26
|
27
|
33
|
48
|
33
|
24
|
34
|
|
|
2024/05
|
19
|
24
|
43
|
42
|
62
|
48
|
50
|
50
|
24
|
32
|
50
|
39
|
36
|
37
|
54
|
32
|
35
|
37
|
35
|
32
|
26
|
33
|
44
|
30
|
18
|
31
|
25
|
17
|
26
|
36
|
35
|
|
2024/04
|
47
|
51
|
49
|
29
|
34
|
40
|
37
|
46
|
35
|
64
|
60
|
51
|
39
|
27
|
45
|
53
|
41
|
37
|
93
|
84
|
55
|
28
|
31
|
43
|
38
|
59
|
46
|
41
|
46
|
21
|
|
|
2024/03
|
19
|
46
|
58
|
66
|
65
|
13
|
57
|
75
|
69
|
48
|
46
|
60
|
71
|
72
|
64
|
43
|
57
|
35
|
43
|
74
|
70
|
69
|
72
|
63
|
47
|
43
|
35
|
56
|
52
|
63
|
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