Air Quality
Excellent
No health implications.
5
PM2.5
16
PM10
98
O3
0.3
CO
4
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Apr
73
Good
Tue
29 Apr
83
Good
Wed
30 Apr
80
Good
Thu
1 May
55
Good
Fri
2 May
52
Good
Sat
3 May
54
Good
Sun
4 May
37
Excellent
Air quality in the last 12 months (Huailai)
|
2025/02
|
85
|
47
|
9
|
18
|
23
|
52
|
13
|
15
|
25
|
49
|
80
|
30
|
46
|
50
|
69
|
21
|
19
|
26
|
20
|
19
|
19
|
19
|
15
|
34
|
32
|
44
|
78
|
86
|
|||
|
2025/01
|
46
|
25
|
27
|
38
|
38
|
12
|
11
|
19
|
18
|
22
|
44
|
28
|
32
|
19
|
25
|
43
|
54
|
56
|
37
|
50
|
39
|
37
|
71
|
87
|
114
|
105
|
13
|
19
|
83
|
49
|
71
|
|
2024/12
|
38
|
14
|
25
|
27
|
16
|
16
|
13
|
25
|
39
|
43
|
42
|
51
|
24
|
23
|
33
|
35
|
20
|
22
|
36
|
34
|
19
|
31
|
43
|
58
|
56
|
23
|
17
|
42
|
70
|
69
|
46
|
|
2024/11
|
67
|
79
|
48
|
14
|
28
|
36
|
73
|
130
|
167
|
121
|
72
|
60
|
93
|
64
|
48
|
47
|
29
|
41
|
65
|
58
|
26
|
25
|
53
|
92
|
34
|
13
|
14
|
16
|
22
|
32
|
|
|
2024/10
|
7
|
17
|
27
|
48
|
69
|
73
|
17
|
25
|
44
|
18
|
39
|
65
|
99
|
61
|
34
|
49
|
59
|
23
|
9
|
23
|
43
|
17
|
33
|
41
|
104
|
154
|
16
|
32
|
46
|
51
|
133
|
|
2024/09
|
21
|
11
|
21
|
41
|
10
|
18
|
15
|
25
|
38
|
12
|
17
|
16
|
22
|
13
|
19
|
31
|
21
|
37
|
47
|
22
|
7
|
11
|
26
|
45
|
25
|
35
|
54
|
54
|
52
|
8
|
|
|
2024/08
|
16
|
29
|
28
|
20
|
16
|
28
|
43
|
36
|
33
|
38
|
10
|
12
|
11
|
20
|
33
|
36
|
28
|
20
|
17
|
14
|
12
|
19
|
24
|
25
|
23
|
9
|
16
|
20
|
29
|
38
|
49
|
|
2024/07
|
18
|
29
|
31
|
42
|
48
|
28
|
32
|
35
|
57
|
61
|
61
|
42
|
33
|
52
|
57
|
27
|
14
|
22
|
33
|
26
|
51
|
35
|
53
|
42
|
13
|
20
|
37
|
29
|
26
|
22
|
14
|
|
2024/06
|
26
|
34
|
39
|
50
|
54
|
51
|
23
|
29
|
27
|
24
|
28
|
38
|
41
|
23
|
22
|
33
|
47
|
53
|
50
|
60
|
39
|
272
|
133
|
20
|
23
|
54
|
63
|
54
|
57
|
33
|
|
|
2024/05
|
34
|
50
|
54
|
62
|
71
|
43
|
46
|
48
|
70
|
148
|
102
|
34
|
39
|
50
|
27
|
57
|
61
|
74
|
72
|
34
|
54
|
65
|
84
|
43
|
17
|
26
|
29
|
43
|
59
|
39
|
12
|
|
2024/04
|
77
|
85
|
64
|
66
|
60
|
51
|
43
|
70
|
57
|
52
|
62
|
112
|
78
|
68
|
105
|
46
|
61
|
64
|
71
|
41
|
54
|
82
|
25
|
45
|
99
|
94
|
102
|
31
|
18
|
25
|
|
|
2024/03
|
27
|
84
|
48
|
56
|
68
|
29
|
30
|
26
|
47
|
80
|
49
|
31
|
45
|
50
|
87
|
102
|
36
|
154
|
69
|
40
|
75
|
56
|
64
|
70
|
50
|
89
|
189
|
221
|
111
|
38
|
63
|
|
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