Air Quality
Excellent
No health implications.
13
PM2.5
18
PM10
36
O3
0.3
CO
4
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
26 Apr
39
Excellent
Sun
27 Apr
44
Excellent
Mon
28 Apr
68
Good
Tue
29 Apr
54
Good
Wed
30 Apr
52
Good
Thu
1 May
57
Good
Fri
2 May
48
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