Air Quality
Excellent
No health implications.
4
PM2.5
23
PM10
49
O3
0.5
CO
6
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
11 Sep
44
Excellent
Fri
12 Sep
50
Excellent
Sat
13 Sep
53
Good
Sun
14 Sep
47
Excellent
Mon
15 Sep
51
Good
Tue
16 Sep
46
Excellent
Wed
17 Sep
46
Excellent
Air quality in the last 12 months (Huichang)
|
2025/08
|
25
|
25
|
15
|
15
|
13
|
15
|
21
|
20
|
26
|
27
|
23
|
27
|
25
|
11
|
16
|
16
|
20
|
18
|
17
|
18
|
19
|
20
|
29
|
21
|
20
|
19
|
20
|
21
|
21
|
22
|
27
|
|
2025/07
|
22
|
24
|
28
|
34
|
29
|
26
|
32
|
36
|
29
|
15
|
18
|
16
|
20
|
22
|
25
|
31
|
35
|
30
|
17
|
12
|
13
|
13
|
19
|
18
|
22
|
27
|
20
|
19
|
23
|
20
|
23
|
|
2025/06
|
19
|
21
|
14
|
24
|
32
|
35
|
32
|
32
|
23
|
26
|
23
|
19
|
23
|
15
|
14
|
16
|
15
|
18
|
18
|
15
|
14
|
15
|
17
|
22
|
26
|
19
|
16
|
18
|
19
|
19
|
|
|
2025/05
|
47
|
49
|
50
|
43
|
21
|
24
|
35
|
27
|
18
|
35
|
26
|
34
|
37
|
34
|
31
|
25
|
22
|
18
|
16
|
19
|
22
|
27
|
24
|
30
|
45
|
40
|
42
|
31
|
12
|
18
|
27
|
|
2025/04
|
33
|
38
|
46
|
53
|
48
|
52
|
56
|
58
|
59
|
44
|
45
|
83
|
145
|
99
|
75
|
65
|
65
|
55
|
27
|
22
|
36
|
32
|
21
|
23
|
17
|
15
|
21
|
27
|
45
|
49
|
|
|
2025/03
|
31
|
26
|
30
|
14
|
15
|
16
|
31
|
29
|
41
|
51
|
48
|
35
|
31
|
21
|
12
|
21
|
47
|
35
|
40
|
38
|
42
|
48
|
52
|
62
|
72
|
68
|
47
|
54
|
15
|
9
|
19
|
|
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
|
|
|
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