Air Quality
Excellent
No health implications.
6
PM2.5
16
PM10
19
O3
0.5
CO
3
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 May
44
Excellent
Wed
21 May
43
Excellent
Thu
22 May
44
Excellent
Fri
23 May
50
Excellent
Sat
24 May
50
Excellent
Sun
25 May
41
Excellent
Mon
26 May
25
Excellent
Air quality in the last 12 months (Huichang)
|
2025/02
|
35
|
23
|
18
|
36
|
38
|
44
|
32
|
54
|
33
|
41
|
46
|
82
|
56
|
55
|
58
|
38
|
38
|
44
|
42
|
27
|
19
|
21
|
16
|
25
|
42
|
58
|
46
|
36
|
|||
|
2025/01
|
88
|
68
|
69
|
67
|
76
|
81
|
71
|
65
|
61
|
39
|
43
|
48
|
54
|
51
|
58
|
53
|
45
|
51
|
53
|
52
|
54
|
59
|
46
|
57
|
52
|
14
|
33
|
61
|
95
|
58
|
44
|
|
2024/12
|
50
|
48
|
49
|
54
|
62
|
52
|
43
|
48
|
60
|
55
|
39
|
32
|
47
|
59
|
49
|
48
|
49
|
54
|
59
|
60
|
58
|
70
|
72
|
63
|
76
|
66
|
86
|
85
|
72
|
62
|
70
|
|
2024/11
|
20
|
27
|
37
|
43
|
49
|
46
|
37
|
38
|
45
|
44
|
38
|
35
|
34
|
35
|
29
|
18
|
27
|
18
|
22
|
28
|
28
|
29
|
34
|
46
|
37
|
19
|
30
|
30
|
35
|
45
|
|
|
2024/10
|
26
|
23
|
33
|
31
|
31
|
34
|
34
|
27
|
23
|
29
|
42
|
47
|
41
|
46
|
61
|
34
|
35
|
38
|
30
|
23
|
26
|
34
|
25
|
36
|
43
|
38
|
28
|
12
|
28
|
40
|
34
|
|
2024/09
|
31
|
33
|
36
|
28
|
24
|
19
|
17
|
18
|
17
|
24
|
31
|
38
|
36
|
30
|
22
|
23
|
27
|
23
|
28
|
20
|
22
|
21
|
20
|
22
|
22
|
24
|
29
|
27
|
23
|
23
|
|
|
2024/08
|
19
|
24
|
31
|
37
|
21
|
31
|
27
|
29
|
31
|
40
|
30
|
26
|
24
|
17
|
20
|
21
|
17
|
15
|
17
|
15
|
14
|
16
|
27
|
26
|
24
|
28
|
33
|
27
|
28
|
32
|
32
|
|
2024/07
|
22
|
18
|
21
|
19
|
21
|
21
|
15
|
16
|
19
|
21
|
21
|
18
|
18
|
21
|
19
|
18
|
16
|
16
|
18
|
19
|
19
|
22
|
28
|
29
|
28
|
15
|
11
|
13
|
18
|
21
|
13
|
|
2024/06
|
15
|
12
|
22
|
15
|
18
|
20
|
27
|
31
|
18
|
23
|
19
|
23
|
26
|
19
|
17
|
14
|
17
|
22
|
21
|
22
|
21
|
32
|
28
|
18
|
19
|
23
|
21
|
20
|
18
|
19
|
|
|
2024/05
|
18
|
23
|
32
|
29
|
17
|
27
|
41
|
43
|
46
|
53
|
39
|
28
|
49
|
39
|
41
|
48
|
51
|
50
|
41
|
23
|
14
|
12
|
21
|
20
|
16
|
17
|
17
|
20
|
28
|
33
|
22
|
|
2024/04
|
28
|
44
|
36
|
22
|
17
|
19
|
17
|
18
|
24
|
31
|
49
|
52
|
56
|
49
|
52
|
51
|
35
|
28
|
19
|
20
|
18
|
24
|
25
|
31
|
22
|
22
|
29
|
20
|
25
|
20
|
|
|
2024/03
|
25
|
30
|
37
|
49
|
42
|
18
|
34
|
42
|
49
|
49
|
31
|
36
|
57
|
54
|
29
|
41
|
47
|
23
|
27
|
56
|
59
|
52
|
44
|
44
|
32
|
22
|
38
|
31
|
36
|
47
|
28
|
|
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