Air Quality
Excellent
No health implications.
18
PM2.5
22
PM10
41
O3
0.2
CO
1
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Jan
23
Excellent
Thu
22 Jan
35
Excellent
Fri
23 Jan
58
Good
Sat
24 Jan
51
Good
Sun
25 Jan
47
Excellent
Mon
26 Jan
18
Excellent
Tue
27 Jan
16
Excellent
Air quality in the last 12 months (Huichuan)
|
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
|
|
|
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
|
|
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