Air Quality
Excellent
No health implications.
15
PM2.5
28
PM10
71
O3
0.4
CO
9
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Apr
66
Good
Thu
24 Apr
64
Good
Fri
25 Apr
57
Good
Sat
26 Apr
58
Good
Sun
27 Apr
70
Good
Mon
28 Apr
72
Good
Tue
29 Apr
34
Excellent
Air quality in the last 12 months (Longhai)
|
2025/02
|
51
|
21
|
17
|
35
|
62
|
54
|
15
|
43
|
42
|
41
|
45
|
48
|
47
|
35
|
43
|
66
|
51
|
58
|
33
|
37
|
25
|
25
|
21
|
38
|
48
|
68
|
76
|
82
|
|||
|
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
|
|
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