Air Quality
Excellent
No health implications.
4
PM2.5
7
PM10
100
O3
0.5
CO
4
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Aug
49
Excellent
Thu
28 Aug
58
Good
Fri
29 Aug
62
Good
Sat
30 Aug
67
Good
Sun
31 Aug
76
Good
Mon
1 Sep
70
Good
Tue
2 Sep
20
Excellent
Air quality in the last 12 months (Huailai)
|
2025/06
|
55
|
15
|
11
|
18
|
33
|
28
|
21
|
37
|
38
|
27
|
48
|
69
|
52
|
41
|
12
|
16
|
32
|
50
|
32
|
23
|
21
|
28
|
42
|
43
|
51
|
63
|
64
|
52
|
41
|
39
|
|
|
2025/05
|
24
|
26
|
18
|
30
|
62
|
33
|
58
|
85
|
18
|
39
|
34
|
52
|
59
|
24
|
45
|
73
|
42
|
30
|
35
|
72
|
67
|
59
|
52
|
39
|
44
|
34
|
34
|
46
|
59
|
65
|
51
|
|
2025/04
|
30
|
24
|
54
|
62
|
23
|
56
|
60
|
35
|
43
|
49
|
116
|
72
|
56
|
38
|
41
|
83
|
72
|
18
|
30
|
58
|
67
|
34
|
53
|
29
|
39
|
66
|
23
|
34
|
50
|
32
|
|
|
2025/03
|
132
|
87
|
33
|
46
|
45
|
24
|
50
|
81
|
100
|
118
|
149
|
69
|
86
|
71
|
39
|
20
|
24
|
23
|
24
|
28
|
29
|
58
|
188
|
87
|
60
|
98
|
40
|
24
|
21
|
36
|
40
|
|
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
|
|
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