Air Quality
Excellent
No health implications.
11
PM2.5
23
PM10
49
O3
0.5
CO
7
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Feb
56
Good
Mon
16 Feb
87
Good
Tue
17 Feb
80
Good
Wed
18 Feb
62
Good
Thu
19 Feb
63
Good
Fri
20 Feb
63
Good
Sat
21 Feb
32
Excellent
Air quality in the last 12 months (Huicheng)
|
2026/01
|
57
|
18
|
30
|
55
|
50
|
36
|
42
|
31
|
40
|
54
|
41
|
65
|
68
|
60
|
60
|
63
|
61
|
68
|
64
|
57
|
26
|
30
|
35
|
47
|
49
|
52
|
60
|
39
|
46
|
40
|
31
|
|
2025/12
|
44
|
42
|
58
|
62
|
60
|
59
|
59
|
50
|
52
|
56
|
55
|
46
|
39
|
32
|
43
|
55
|
46
|
49
|
42
|
31
|
47
|
71
|
47
|
49
|
26
|
37
|
42
|
49
|
55
|
56
|
56
|
|
2025/11
|
32
|
36
|
33
|
15
|
12
|
25
|
39
|
38
|
30
|
18
|
25
|
23
|
16
|
29
|
39
|
51
|
45
|
42
|
25
|
32
|
34
|
42
|
51
|
47
|
49
|
65
|
54
|
61
|
65
|
62
|
|
|
2025/10
|
28
|
20
|
21
|
29
|
17
|
17
|
28
|
33
|
38
|
37
|
28
|
24
|
21
|
19
|
28
|
35
|
39
|
41
|
37
|
17
|
9
|
9
|
24
|
39
|
34
|
40
|
56
|
58
|
46
|
36
|
33
|
|
2025/09
|
18
|
15
|
20
|
21
|
17
|
23
|
16
|
11
|
16
|
17
|
22
|
18
|
20
|
18
|
20
|
27
|
27
|
21
|
12
|
13
|
15
|
23
|
21
|
8
|
12
|
21
|
30
|
28
|
23
|
34
|
|
|
2025/08
|
29
|
22
|
19
|
13
|
11
|
15
|
23
|
30
|
32
|
13
|
16
|
26
|
29
|
23
|
12
|
21
|
19
|
10
|
12
|
19
|
25
|
30
|
21
|
18
|
17
|
22
|
21
|
28
|
24
|
19
|
17
|
|
2025/07
|
14
|
17
|
29
|
31
|
29
|
25
|
48
|
22
|
29
|
19
|
11
|
20
|
24
|
30
|
34
|
30
|
39
|
37
|
24
|
9
|
10
|
15
|
15
|
21
|
28
|
31
|
46
|
35
|
35
|
36
|
22
|
|
2025/06
|
32
|
28
|
20
|
21
|
23
|
32
|
30
|
24
|
28
|
23
|
17
|
16
|
13
|
18
|
21
|
18
|
11
|
16
|
12
|
12
|
16
|
23
|
22
|
18
|
18
|
15
|
11
|
15
|
11
|
13
|
|
|
2025/05
|
41
|
47
|
53
|
35
|
34
|
28
|
26
|
35
|
30
|
29
|
30
|
38
|
41
|
33
|
21
|
19
|
26
|
27
|
24
|
22
|
20
|
24
|
25
|
25
|
49
|
37
|
43
|
37
|
25
|
17
|
31
|
|
2025/04
|
18
|
29
|
41
|
50
|
25
|
45
|
52
|
57
|
49
|
43
|
36
|
40
|
195
|
153
|
105
|
89
|
65
|
55
|
30
|
34
|
28
|
30
|
35
|
25
|
19
|
22
|
33
|
32
|
33
|
48
|
|
|
2025/03
|
32
|
32
|
33
|
24
|
11
|
11
|
18
|
28
|
38
|
45
|
44
|
28
|
29
|
27
|
22
|
11
|
48
|
38
|
43
|
44
|
50
|
50
|
56
|
60
|
61
|
47
|
35
|
41
|
9
|
7
|
8
|
|
2025/02
|
29
|
36
|
9
|
23
|
36
|
38
|
21
|
53
|
38
|
43
|
33
|
28
|
41
|
43
|
48
|
54
|
39
|
47
|
40
|
41
|
24
|
31
|
12
|
25
|
43
|
38
|
49
|
31
|
|||
|
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