Air Quality
Excellent
No health implications.
18
PM2.5
21
PM10
31
O3
0.8
CO
11
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Oct
31
Excellent
Sat
24 Oct
30
Excellent
Sun
25 Oct
29
Excellent
Mon
26 Oct
30
Excellent
Tue
27 Oct
31
Excellent
Wed
28 Oct
32
Excellent
Thu
29 Oct
50
Excellent
Air quality in the last 12 months (Huichuan)
|
2026/08
|
22
|
23
|
18
|
21
|
29
|
25
|
26
|
27
|
27
|
28
|
29
|
29
|
32
|
30
|
23
|
28
|
32
|
36
|
33
|
25
|
32
|
34
|
35
|
37
|
25
|
29
|
26
|
25
|
25
|
25
|
34
|
|
2026/07
|
20
|
23
|
19
|
19
|
23
|
26
|
32
|
31
|
31
|
26
|
27
|
31
|
29
|
33
|
33
|
27
|
28
|
24
|
26
|
29
|
39
|
39
|
37
|
31
|
29
|
30
|
31
|
28
|
28
|
27
|
23
|
|
2026/06
|
34
|
36
|
32
|
38
|
41
|
43
|
27
|
24
|
23
|
29
|
31
|
28
|
26
|
37
|
38
|
36
|
43
|
26
|
22
|
26
|
21
|
19
|
18
|
16
|
17
|
20
|
26
|
30
|
24
|
16
|
|
|
2026/05
|
35
|
32
|
32
|
39
|
42
|
42
|
45
|
36
|
43
|
47
|
48
|
44
|
41
|
42
|
25
|
25
|
26
|
25
|
28
|
29
|
27
|
28
|
35
|
37
|
39
|
41
|
30
|
24
|
26
|
36
|
38
|
|
2026/04
|
30
|
40
|
35
|
39
|
43
|
45
|
27
|
40
|
45
|
44
|
31
|
32
|
28
|
34
|
28
|
30
|
33
|
34
|
48
|
37
|
22
|
26
|
35
|
35
|
44
|
46
|
31
|
26
|
30
|
38
|
|
|
2026/03
|
21
|
26
|
26
|
31
|
37
|
40
|
24
|
17
|
19
|
24
|
40
|
43
|
47
|
49
|
15
|
19
|
17
|
20
|
26
|
23
|
32
|
32
|
22
|
23
|
25
|
25
|
35
|
31
|
34
|
34
|
26
|
|
2026/02
|
29
|
49
|
58
|
55
|
57
|
66
|
52
|
48
|
41
|
33
|
44
|
54
|
65
|
62
|
58
|
60
|
83
|
58
|
53
|
59
|
64
|
66
|
47
|
46
|
37
|
44
|
20
|
17
|
|||
|
2026/01
|
34
|
40
|
36
|
35
|
50
|
57
|
72
|
67
|
83
|
113
|
87
|
76
|
87
|
105
|
114
|
125
|
137
|
88
|
68
|
31
|
30
|
58
|
61
|
70
|
43
|
39
|
47
|
41
|
33
|
22
|
30
|
|
2025/12
|
95
|
99
|
63
|
59
|
64
|
74
|
60
|
58
|
64
|
55
|
65
|
69
|
45
|
43
|
51
|
72
|
61
|
86
|
72
|
54
|
66
|
53
|
40
|
43
|
49
|
54
|
65
|
87
|
79
|
56
|
32
|
|
2025/11
|
14
|
17
|
15
|
14
|
14
|
10
|
10
|
9
|
9
|
10
|
21
|
23
|
24
|
37
|
38
|
45
|
23
|
14
|
24
|
28
|
39
|
48
|
36
|
38
|
48
|
50
|
54
|
65
|
62
|
79
|
|
|
2025/10
|
21
|
19
|
16
|
13
|
14
|
16
|
14
|
14
|
15
|
15
|
17
|
20
|
15
|
16
|
11
|
9
|
12
|
8
|
7
|
8
|
10
|
11
|
16
|
20
|
33
|
25
|
17
|
21
|
23
|
19
|
19
|
|
2025/09
|
44
|
38
|
34
|
25
|
29
|
26
|
36
|
29
|
22
|
21
|
22
|
27
|
21
|
23
|
27
|
24
|
27
|
25
|
29
|
28
|
21
|
19
|
20
|
18
|
21
|
15
|
19
|
25
|
28
|
29
|
|
|
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