Air Quality
Excellent
No health implications.
4
PM2.5
7
PM10
25
O3
0.7
CO
8
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
3 Feb
52
Good
Tue
4 Feb
54
Good
Wed
5 Feb
60
Good
Thu
6 Feb
57
Good
Fri
7 Feb
58
Good
Sat
8 Feb
56
Good
Sun
9 Feb
20
Excellent
Air quality in the last 12 months (Haifeng)
|
2024/12
|
50
|
49
|
46
|
46
|
50
|
61
|
49
|
31
|
40
|
43
|
46
|
27
|
27
|
54
|
42
|
40
|
59
|
51
|
45
|
53
|
42
|
48
|
68
|
51
|
44
|
46
|
65
|
65
|
61
|
66
|
58
|
|
2024/11
|
25
|
17
|
34
|
42
|
40
|
48
|
39
|
32
|
38
|
38
|
51
|
38
|
30
|
18
|
31
|
28
|
21
|
28
|
15
|
8
|
14
|
23
|
33
|
42
|
27
|
16
|
24
|
27
|
31
|
42
|
|
|
2024/10
|
22
|
21
|
29
|
27
|
29
|
43
|
33
|
25
|
28
|
32
|
43
|
43
|
36
|
32
|
35
|
31
|
29
|
34
|
41
|
23
|
30
|
28
|
23
|
28
|
33
|
35
|
39
|
30
|
20
|
32
|
34
|
|
2024/09
|
19
|
22
|
34
|
28
|
24
|
11
|
17
|
10
|
16
|
22
|
31
|
36
|
34
|
23
|
20
|
18
|
26
|
32
|
29
|
22
|
14
|
14
|
9
|
11
|
17
|
25
|
41
|
23
|
26
|
27
|
|
|
2024/08
|
27
|
24
|
24
|
30
|
28
|
31
|
31
|
27
|
21
|
24
|
25
|
20
|
20
|
19
|
20
|
19
|
16
|
19
|
16
|
19
|
16
|
21
|
23
|
30
|
27
|
26
|
25
|
31
|
32
|
26
|
18
|
|
2024/07
|
22
|
19
|
13
|
17
|
15
|
16
|
12
|
17
|
15
|
13
|
11
|
11
|
11
|
17
|
15
|
13
|
14
|
17
|
19
|
21
|
16
|
16
|
15
|
31
|
32
|
21
|
17
|
9
|
14
|
13
|
14
|
|
2024/06
|
17
|
18
|
14
|
24
|
24
|
25
|
16
|
16
|
15
|
19
|
18
|
26
|
28
|
30
|
22
|
21
|
19
|
18
|
15
|
14
|
25
|
23
|
14
|
14
|
15
|
15
|
17
|
16
|
14
|
18
|
|
|
2024/05
|
17
|
26
|
28
|
29
|
14
|
27
|
33
|
39
|
42
|
43
|
36
|
27
|
30
|
29
|
38
|
51
|
42
|
36
|
37
|
17
|
12
|
13
|
13
|
11
|
14
|
17
|
22
|
16
|
24
|
28
|
19
|
|
2024/04
|
34
|
40
|
23
|
32
|
45
|
26
|
27
|
34
|
18
|
36
|
42
|
45
|
40
|
29
|
25
|
33
|
24
|
25
|
41
|
33
|
17
|
25
|
21
|
22
|
20
|
17
|
17
|
12
|
22
|
19
|
|
|
2024/03
|
17
|
16
|
33
|
42
|
62
|
42
|
31
|
37
|
61
|
44
|
27
|
23
|
57
|
61
|
71
|
66
|
54
|
42
|
34
|
55
|
56
|
54
|
50
|
29
|
26
|
36
|
37
|
40
|
44
|
50
|
25
|
|
2024/02
|
41
|
36
|
28
|
32
|
27
|
30
|
23
|
11
|
23
|
72
|
65
|
59
|
62
|
55
|
45
|
41
|
30
|
37
|
32
|
29
|
22
|
23
|
29
|
27
|
27
|
39
|
34
|
35
|
41
|
||
|
2024/01
|
77
|
67
|
46
|
37
|
57
|
74
|
71
|
70
|
66
|
34
|
55
|
79
|
71
|
41
|
54
|
50
|
45
|
45
|
41
|
37
|
29
|
25
|
22
|
27
|
34
|
42
|
46
|
33
|
65
|
69
|
51
|
|
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