Air Quality
Excellent
No health implications.
7
PM2.5
15
PM10
47
O3
0.2
CO
4
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Oct
32
Excellent
Fri
17 Oct
37
Excellent
Sat
18 Oct
26
Excellent
Sun
19 Oct
27
Excellent
Mon
20 Oct
26
Excellent
Tue
21 Oct
27
Excellent
Wed
22 Oct
38
Excellent
Air quality in the last 12 months (Huichuan)
|
2025/08
|
30
|
31
|
33
|
30
|
40
|
31
|
34
|
25
|
25
|
25
|
19
|
19
|
25
|
23
|
17
|
20
|
23
|
23
|
19
|
20
|
24
|
20
|
25
|
26
|
25
|
27
|
26
|
25
|
42
|
49
|
43
|
|
2025/07
|
29
|
24
|
24
|
24
|
27
|
31
|
30
|
34
|
30
|
26
|
26
|
31
|
34
|
32
|
35
|
32
|
31
|
36
|
32
|
35
|
31
|
32
|
22
|
24
|
26
|
29
|
30
|
31
|
27
|
31
|
29
|
|
2025/06
|
18
|
22
|
23
|
29
|
22
|
27
|
37
|
37
|
26
|
29
|
34
|
32
|
34
|
31
|
32
|
28
|
23
|
23
|
18
|
21
|
30
|
22
|
22
|
22
|
25
|
19
|
26
|
23
|
24
|
29
|
|
|
2025/05
|
36
|
50
|
43
|
30
|
31
|
25
|
26
|
20
|
30
|
36
|
41
|
33
|
40
|
45
|
41
|
44
|
33
|
34
|
45
|
45
|
28
|
22
|
29
|
35
|
38
|
42
|
24
|
19
|
22
|
24
|
17
|
|
2025/04
|
50
|
57
|
55
|
60
|
62
|
69
|
62
|
75
|
75
|
65
|
63
|
118
|
214
|
92
|
75
|
68
|
51
|
57
|
35
|
23
|
35
|
31
|
32
|
24
|
36
|
33
|
22
|
30
|
33
|
17
|
|
|
2025/03
|
51
|
92
|
60
|
37
|
34
|
39
|
44
|
42
|
45
|
46
|
39
|
65
|
58
|
44
|
38
|
40
|
36
|
33
|
39
|
47
|
60
|
65
|
69
|
60
|
68
|
59
|
65
|
65
|
33
|
35
|
46
|
|
2025/02
|
41
|
29
|
40
|
44
|
50
|
37
|
36
|
54
|
48
|
60
|
59
|
78
|
53
|
31
|
40
|
46
|
47
|
47
|
37
|
32
|
36
|
32
|
42
|
42
|
35
|
54
|
49
|
60
|
|||
|
2025/01
|
82
|
81
|
86
|
79
|
95
|
85
|
59
|
54
|
39
|
47
|
53
|
47
|
50
|
73
|
62
|
73
|
61
|
59
|
55
|
85
|
85
|
86
|
92
|
56
|
32
|
35
|
44
|
56
|
163
|
62
|
47
|
|
2024/12
|
70
|
82
|
50
|
40
|
28
|
37
|
36
|
43
|
30
|
24
|
34
|
42
|
54
|
56
|
51
|
58
|
60
|
64
|
70
|
87
|
102
|
65
|
63
|
71
|
78
|
61
|
83
|
74
|
75
|
47
|
67
|
|
2024/11
|
49
|
34
|
51
|
47
|
47
|
55
|
55
|
52
|
46
|
40
|
46
|
48
|
59
|
45
|
61
|
46
|
28
|
24
|
23
|
25
|
22
|
29
|
28
|
20
|
27
|
26
|
31
|
35
|
34
|
51
|
|
|
2024/10
|
25
|
25
|
32
|
35
|
35
|
38
|
40
|
30
|
31
|
47
|
54
|
51
|
31
|
23
|
25
|
22
|
20
|
28
|
22
|
20
|
18
|
21
|
26
|
27
|
38
|
36
|
50
|
41
|
40
|
41
|
54
|
|
2024/09
|
26
|
25
|
22
|
22
|
22
|
33
|
30
|
21
|
21
|
24
|
30
|
32
|
29
|
30
|
21
|
36
|
24
|
24
|
26
|
33
|
28
|
22
|
35
|
35
|
38
|
51
|
39
|
35
|
25
|
26
|
|
|
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