Air Quality
Excellent
No health implications.
13
PM2.5
24
PM10
101
O3
0.7
CO
4
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Apr
60
Good
Tue
29 Apr
93
Good
Wed
30 Apr
81
Good
Thu
1 May
60
Good
Fri
2 May
59
Good
Sat
3 May
55
Good
Sun
4 May
28
Excellent
Air quality in the last 12 months (Huilai)
|
2025/02
|
72
|
28
|
18
|
30
|
58
|
47
|
31
|
44
|
51
|
45
|
54
|
73
|
63
|
51
|
51
|
70
|
53
|
67
|
39
|
40
|
30
|
32
|
31
|
31
|
54
|
55
|
59
|
77
|
|||
|
2025/01
|
57
|
61
|
60
|
51
|
65
|
69
|
57
|
60
|
57
|
58
|
48
|
43
|
57
|
55
|
63
|
87
|
57
|
49
|
85
|
56
|
59
|
59
|
64
|
33
|
32
|
35
|
29
|
53
|
80
|
58
|
67
|
|
2024/12
|
66
|
72
|
66
|
40
|
45
|
51
|
51
|
46
|
44
|
32
|
47
|
38
|
35
|
62
|
55
|
53
|
59
|
51
|
53
|
49
|
51
|
61
|
60
|
43
|
46
|
51
|
58
|
82
|
65
|
68
|
81
|
|
2024/11
|
29
|
20
|
32
|
45
|
43
|
45
|
38
|
37
|
33
|
33
|
43
|
38
|
24
|
28
|
42
|
33
|
30
|
27
|
19
|
11
|
15
|
34
|
37
|
35
|
37
|
19
|
35
|
35
|
35
|
57
|
|
|
2024/10
|
25
|
25
|
32
|
27
|
27
|
38
|
34
|
33
|
31
|
42
|
46
|
41
|
33
|
36
|
32
|
26
|
31
|
44
|
48
|
19
|
29
|
39
|
31
|
38
|
46
|
44
|
50
|
25
|
30
|
48
|
37
|
|
2024/09
|
29
|
39
|
41
|
30
|
21
|
13
|
18
|
15
|
21
|
36
|
47
|
43
|
36
|
31
|
31
|
24
|
34
|
26
|
31
|
19
|
14
|
20
|
13
|
16
|
29
|
28
|
39
|
22
|
31
|
37
|
|
|
2024/08
|
28
|
29
|
31
|
35
|
42
|
43
|
46
|
39
|
31
|
23
|
29
|
25
|
26
|
25
|
28
|
23
|
14
|
20
|
12
|
12
|
15
|
28
|
34
|
33
|
41
|
35
|
32
|
39
|
47
|
26
|
17
|
|
2024/07
|
23
|
19
|
13
|
18
|
15
|
13
|
11
|
18
|
22
|
21
|
13
|
12
|
15
|
17
|
16
|
16
|
22
|
20
|
17
|
21
|
17
|
19
|
26
|
33
|
34
|
14
|
14
|
16
|
21
|
17
|
17
|
|
2024/06
|
15
|
14
|
19
|
28
|
30
|
44
|
15
|
19
|
21
|
14
|
15
|
23
|
21
|
26
|
23
|
18
|
18
|
17
|
16
|
14
|
25
|
25
|
15
|
12
|
16
|
16
|
17
|
16
|
11
|
17
|
|
|
2024/05
|
42
|
25
|
32
|
37
|
23
|
38
|
42
|
54
|
45
|
37
|
52
|
46
|
29
|
31
|
54
|
64
|
53
|
59
|
47
|
28
|
21
|
14
|
14
|
15
|
24
|
24
|
22
|
25
|
26
|
31
|
30
|
|
2024/04
|
42
|
46
|
24
|
40
|
46
|
31
|
35
|
50
|
19
|
45
|
46
|
54
|
60
|
36
|
36
|
33
|
24
|
29
|
48
|
46
|
27
|
37
|
25
|
37
|
32
|
20
|
27
|
19
|
31
|
22
|
|
|
2024/03
|
20
|
24
|
39
|
47
|
94
|
85
|
30
|
55
|
63
|
53
|
48
|
31
|
72
|
70
|
76
|
92
|
116
|
50
|
60
|
59
|
60
|
66
|
75
|
39
|
34
|
49
|
44
|
55
|
71
|
69
|
24
|
|
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