Air Quality
Excellent
No health implications.
6
PM2.5
12
PM10
57
O3
0.5
CO
3
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Feb
40
Excellent
Mon
24 Feb
43
Excellent
Tue
25 Feb
50
Excellent
Wed
26 Feb
44
Excellent
Thu
27 Feb
51
Good
Fri
28 Feb
53
Good
Sat
1 Mar
35
Excellent
Air quality in the last 12 months (Longhai)
|
2025/01
|
64
|
66
|
60
|
47
|
54
|
60
|
65
|
61
|
59
|
62
|
48
|
51
|
59
|
59
|
79
|
83
|
66
|
57
|
56
|
55
|
63
|
68
|
57
|
34
|
29
|
29
|
19
|
38
|
117
|
43
|
40
|
|
2024/12
|
57
|
67
|
54
|
40
|
46
|
45
|
41
|
35
|
32
|
38
|
44
|
27
|
26
|
38
|
61
|
58
|
58
|
55
|
52
|
39
|
49
|
65
|
58
|
39
|
48
|
56
|
61
|
71
|
61
|
59
|
68
|
|
2024/11
|
18
|
19
|
36
|
47
|
48
|
46
|
31
|
30
|
49
|
46
|
37
|
30
|
23
|
35
|
36
|
25
|
30
|
21
|
16
|
10
|
14
|
23
|
29
|
30
|
30
|
18
|
30
|
27
|
40
|
51
|
|
|
2024/10
|
14
|
13
|
18
|
18
|
20
|
26
|
26
|
18
|
32
|
43
|
49
|
46
|
39
|
39
|
33
|
31
|
37
|
48
|
43
|
22
|
31
|
36
|
40
|
37
|
29
|
31
|
41
|
25
|
35
|
44
|
19
|
|
2024/09
|
34
|
45
|
40
|
31
|
27
|
17
|
17
|
19
|
19
|
38
|
51
|
55
|
26
|
33
|
26
|
27
|
28
|
26
|
34
|
21
|
24
|
10
|
11
|
14
|
23
|
30
|
22
|
19
|
24
|
17
|
|
|
2024/08
|
27
|
32
|
40
|
43
|
43
|
39
|
31
|
27
|
34
|
47
|
45
|
38
|
31
|
29
|
22
|
17
|
21
|
20
|
19
|
12
|
16
|
23
|
30
|
34
|
42
|
49
|
38
|
35
|
45
|
30
|
32
|
|
2024/07
|
18
|
18
|
16
|
18
|
15
|
14
|
13
|
17
|
13
|
19
|
25
|
29
|
24
|
23
|
22
|
19
|
18
|
14
|
18
|
22
|
23
|
30
|
35
|
29
|
14
|
8
|
16
|
22
|
24
|
19
|
11
|
|
2024/06
|
9
|
8
|
28
|
29
|
34
|
28
|
25
|
27
|
21
|
21
|
16
|
27
|
31
|
25
|
21
|
19
|
17
|
21
|
16
|
19
|
21
|
29
|
18
|
11
|
16
|
20
|
18
|
15
|
15
|
18
|
|
|
2024/05
|
30
|
23
|
29
|
41
|
25
|
44
|
49
|
52
|
51
|
40
|
46
|
37
|
31
|
33
|
46
|
56
|
49
|
54
|
45
|
23
|
16
|
12
|
23
|
23
|
34
|
21
|
15
|
26
|
31
|
51
|
38
|
|
2024/04
|
34
|
56
|
41
|
47
|
28
|
36
|
21
|
38
|
21
|
44
|
51
|
55
|
69
|
47
|
58
|
52
|
45
|
42
|
47
|
53
|
27
|
37
|
37
|
26
|
41
|
25
|
25
|
17
|
27
|
26
|
|
|
2024/03
|
11
|
28
|
46
|
52
|
67
|
42
|
36
|
66
|
68
|
69
|
49
|
35
|
70
|
71
|
64
|
76
|
69
|
48
|
58
|
61
|
60
|
72
|
74
|
36
|
37
|
48
|
47
|
56
|
56
|
59
|
39
|
|
2024/02
|
52
|
36
|
35
|
23
|
29
|
23
|
18
|
20
|
47
|
92
|
52
|
47
|
55
|
55
|
49
|
35
|
39
|
71
|
45
|
33
|
21
|
32
|
25
|
33
|
50
|
43
|
35
|
50
|
54
|
||
|
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