Air Quality
Excellent
No health implications.
17
PM2.5
19
PM10
79
O3
0.6
CO
6
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 May
99
Good
Fri
2 May
102
Light
Sat
3 May
85
Good
Sun
4 May
60
Good
Mon
5 May
59
Good
Tue
6 May
47
Excellent
Wed
7 May
38
Excellent
Air quality in the last 12 months (Huichuan)
|
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
|
|
|
2024/08
|
14
|
13
|
13
|
14
|
16
|
18
|
17
|
18
|
19
|
16
|
42
|
54
|
33
|
27
|
25
|
23
|
24
|
24
|
23
|
22
|
22
|
21
|
18
|
16
|
21
|
21
|
24
|
23
|
24
|
22
|
25
|
|
2024/07
|
18
|
20
|
14
|
17
|
18
|
17
|
18
|
19
|
18
|
18
|
19
|
18
|
17
|
18
|
15
|
16
|
21
|
18
|
13
|
14
|
14
|
14
|
17
|
16
|
16
|
24
|
26
|
21
|
15
|
15
|
14
|
|
2024/06
|
26
|
20
|
19
|
19
|
26
|
18
|
17
|
12
|
12
|
20
|
17
|
15
|
21
|
26
|
29
|
20
|
15
|
13
|
14
|
17
|
20
|
15
|
17
|
20
|
18
|
16
|
14
|
16
|
12
|
18
|
|
|
2024/05
|
21
|
22
|
18
|
16
|
29
|
32
|
28
|
39
|
34
|
26
|
20
|
22
|
24
|
30
|
30
|
29
|
41
|
20
|
18
|
25
|
16
|
18
|
27
|
29
|
22
|
19
|
24
|
31
|
28
|
15
|
23
|
|
2024/04
|
33
|
44
|
27
|
21
|
28
|
20
|
28
|
23
|
29
|
36
|
30
|
29
|
35
|
36
|
48
|
36
|
23
|
20
|
22
|
21
|
38
|
39
|
23
|
31
|
26
|
31
|
26
|
28
|
36
|
21
|
|
|
2024/03
|
54
|
55
|
48
|
39
|
35
|
30
|
53
|
52
|
46
|
52
|
54
|
53
|
39
|
41
|
32
|
33
|
24
|
23
|
36
|
50
|
55
|
55
|
38
|
36
|
31
|
25
|
29
|
35
|
36
|
38
|
57
|
|
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