Air Quality
Excellent
No health implications.
27
PM2.5
34
PM10
63
O3
0.8
CO
7
SO2
21
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
3 May
37
Excellent
Sat
4 May
32
Excellent
Sun
5 May
34
Excellent
Mon
6 May
50
Excellent
Tue
7 May
49
Excellent
Wed
8 May
44
Excellent
Thu
9 May
51
Good
Air quality in the last 12 months (Huichang)
|
2024/02
|
43
|
23
|
16
|
15
|
17
|
19
|
14
|
28
|
60
|
92
|
60
|
47
|
43
|
46
|
44
|
24
|
36
|
34
|
30
|
26
|
23
|
18
|
15
|
21
|
23
|
26
|
26
|
34
|
17
|
||
|
2024/01
|
82
|
80
|
37
|
46
|
51
|
54
|
54
|
68
|
51
|
38
|
44
|
49
|
50
|
52
|
60
|
88
|
66
|
54
|
50
|
21
|
22
|
19
|
30
|
38
|
48
|
51
|
55
|
52
|
59
|
40
|
51
|
|
2023/12
|
45
|
41
|
41
|
31
|
28
|
32
|
39
|
45
|
54
|
50
|
40
|
20
|
32
|
44
|
28
|
17
|
30
|
27
|
19
|
27
|
40
|
47
|
43
|
46
|
48
|
55
|
52
|
57
|
69
|
68
|
81
|
|
2023/11
|
43
|
41
|
47
|
52
|
51
|
33
|
35
|
44
|
51
|
30
|
15
|
14
|
29
|
38
|
45
|
31
|
59
|
60
|
59
|
50
|
45
|
50
|
50
|
57
|
60
|
57
|
56
|
51
|
55
|
60
|
|
|
2023/10
|
36
|
30
|
38
|
40
|
27
|
31
|
17
|
17
|
18
|
19
|
23
|
32
|
38
|
47
|
50
|
47
|
52
|
54
|
55
|
20
|
24
|
33
|
36
|
42
|
46
|
50
|
31
|
29
|
31
|
40
|
43
|
|
2023/09
|
21
|
24
|
26
|
25
|
21
|
12
|
14
|
22
|
25
|
25
|
20
|
21
|
22
|
20
|
14
|
19
|
22
|
23
|
30
|
33
|
36
|
33
|
28
|
34
|
30
|
31
|
32
|
31
|
32
|
34
|
|
|
2023/08
|
17
|
27
|
26
|
33
|
30
|
29
|
30
|
26
|
25
|
25
|
25
|
21
|
23
|
26
|
24
|
28
|
25
|
29
|
34
|
29
|
21
|
19
|
23
|
23
|
28
|
24
|
21
|
21
|
20
|
19
|
19
|
|
2023/07
|
23
|
17
|
16
|
17
|
20
|
22
|
20
|
24
|
28
|
29
|
26
|
24
|
26
|
31
|
40
|
26
|
18
|
15
|
16
|
19
|
24
|
21
|
22
|
22
|
25
|
18
|
14
|
14
|
20
|
21
|
20
|
|
2023/06
|
35
|
37
|
35
|
28
|
27
|
29
|
25
|
19
|
19
|
23
|
33
|
46
|
44
|
33
|
32
|
24
|
20
|
18
|
19
|
21
|
22
|
22
|
19
|
20
|
21
|
21
|
18
|
19
|
16
|
20
|
|
|
2023/05
|
58
|
45
|
31
|
21
|
26
|
22
|
21
|
28
|
29
|
39
|
30
|
30
|
38
|
46
|
49
|
49
|
24
|
29
|
37
|
34
|
25
|
23
|
35
|
41
|
41
|
31
|
29
|
37
|
36
|
35
|
34
|
|
2023/04
|
43
|
40
|
36
|
27
|
24
|
23
|
30
|
56
|
55
|
54
|
45
|
40
|
37
|
45
|
37
|
53
|
55
|
38
|
27
|
30
|
34
|
29
|
36
|
17
|
14
|
20
|
32
|
43
|
38
|
64
|
|
|
2023/03
|
51
|
60
|
73
|
71
|
57
|
52
|
58
|
56
|
53
|
55
|
52
|
55
|
67
|
59
|
63
|
65
|
44
|
39
|
43
|
50
|
48
|
43
|
27
|
17
|
15
|
21
|
23
|
33
|
33
|
31
|
45
|
|
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