Air Quality
Excellent
No health implications.
10
PM2.5
22
PM10
62
O3
0.7
CO
7
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Feb
51
Good
Sat
21 Feb
52
Good
Sun
22 Feb
48
Excellent
Mon
23 Feb
52
Good
Tue
24 Feb
48
Excellent
Wed
25 Feb
52
Good
Thu
26 Feb
36
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