Air Quality
Excellent
No health implications.
9
PM2.5
13
PM10
21
O3
0.7
CO
5
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Feb
44
Excellent
Thu
26 Feb
49
Excellent
Fri
27 Feb
45
Excellent
Sat
28 Feb
45
Excellent
Sun
1 Mar
47
Excellent
Mon
2 Mar
31
Excellent
Tue
3 Mar
31
Excellent
Air quality in the last 12 months (Huichang)
|
2026/01
|
42
|
18
|
32
|
45
|
43
|
43
|
43
|
42
|
44
|
42
|
47
|
57
|
54
|
54
|
59
|
68
|
63
|
81
|
84
|
39
|
27
|
39
|
49
|
58
|
62
|
59
|
41
|
37
|
48
|
49
|
18
|
|
2025/12
|
50
|
55
|
63
|
62
|
66
|
62
|
61
|
60
|
67
|
72
|
68
|
58
|
32
|
28
|
44
|
45
|
47
|
56
|
55
|
49
|
64
|
58
|
51
|
43
|
22
|
43
|
46
|
51
|
47
|
49
|
61
|
|
2025/11
|
34
|
42
|
36
|
17
|
17
|
26
|
41
|
42
|
22
|
12
|
37
|
21
|
23
|
33
|
38
|
46
|
48
|
29
|
24
|
32
|
36
|
43
|
52
|
49
|
54
|
59
|
56
|
56
|
52
|
52
|
|
|
2025/10
|
39
|
29
|
28
|
34
|
22
|
20
|
27
|
30
|
34
|
32
|
32
|
29
|
25
|
26
|
30
|
34
|
33
|
43
|
26
|
14
|
15
|
18
|
31
|
35
|
46
|
59
|
60
|
57
|
45
|
56
|
38
|
|
2025/09
|
22
|
20
|
23
|
27
|
27
|
32
|
26
|
11
|
13
|
16
|
14
|
27
|
23
|
27
|
27
|
24
|
26
|
21
|
19
|
14
|
19
|
25
|
28
|
18
|
19
|
21
|
28
|
32
|
33
|
40
|
|
|
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
|
|||
|
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