Air Quality
Excellent
No health implications.
11
PM2.5
16
PM10
45
O3
0.4
CO
4
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 May
30
Excellent
Sat
16 May
31
Excellent
Sun
17 May
31
Excellent
Mon
18 May
38
Excellent
Tue
19 May
53
Good
Wed
20 May
38
Excellent
Thu
21 May
32
Excellent
Air quality in the last 12 months (Huichuan)
|
2026/04
|
30
|
40
|
35
|
39
|
43
|
45
|
27
|
40
|
45
|
44
|
31
|
32
|
28
|
34
|
28
|
30
|
33
|
34
|
48
|
37
|
22
|
26
|
35
|
35
|
44
|
46
|
31
|
26
|
30
|
38
|
|
|
2026/03
|
21
|
26
|
26
|
31
|
37
|
40
|
24
|
17
|
19
|
24
|
40
|
43
|
47
|
49
|
15
|
19
|
17
|
20
|
26
|
23
|
32
|
32
|
22
|
23
|
25
|
25
|
35
|
31
|
34
|
34
|
26
|
|
2026/02
|
29
|
49
|
58
|
55
|
57
|
66
|
52
|
48
|
41
|
33
|
44
|
54
|
65
|
62
|
58
|
60
|
83
|
58
|
53
|
59
|
64
|
66
|
47
|
46
|
37
|
44
|
20
|
17
|
|||
|
2026/01
|
34
|
40
|
36
|
35
|
50
|
57
|
72
|
67
|
83
|
113
|
87
|
76
|
87
|
105
|
114
|
125
|
137
|
88
|
68
|
31
|
30
|
58
|
61
|
70
|
43
|
39
|
47
|
41
|
33
|
22
|
30
|
|
2025/12
|
95
|
99
|
63
|
59
|
64
|
74
|
60
|
58
|
64
|
55
|
65
|
69
|
45
|
43
|
51
|
72
|
61
|
86
|
72
|
54
|
66
|
53
|
40
|
43
|
49
|
54
|
65
|
87
|
79
|
56
|
32
|
|
2025/11
|
14
|
17
|
15
|
14
|
14
|
10
|
10
|
9
|
9
|
10
|
21
|
23
|
24
|
37
|
38
|
45
|
23
|
14
|
24
|
28
|
39
|
48
|
36
|
38
|
48
|
50
|
54
|
65
|
62
|
79
|
|
|
2025/10
|
21
|
19
|
16
|
13
|
14
|
16
|
14
|
14
|
15
|
15
|
17
|
20
|
15
|
16
|
11
|
9
|
12
|
8
|
7
|
8
|
10
|
11
|
16
|
20
|
33
|
25
|
17
|
21
|
23
|
19
|
19
|
|
2025/09
|
44
|
38
|
34
|
25
|
29
|
26
|
36
|
29
|
22
|
21
|
22
|
27
|
21
|
23
|
27
|
24
|
27
|
25
|
29
|
28
|
21
|
19
|
20
|
18
|
21
|
15
|
19
|
25
|
28
|
29
|
|
|
2025/08
|
30
|
31
|
33
|
30
|
40
|
31
|
34
|
25
|
25
|
25
|
19
|
19
|
25
|
23
|
17
|
20
|
23
|
23
|
19
|
20
|
24
|
20
|
25
|
26
|
25
|
27
|
26
|
25
|
42
|
49
|
43
|
|
2025/07
|
29
|
24
|
24
|
24
|
27
|
31
|
30
|
34
|
30
|
26
|
26
|
31
|
34
|
32
|
35
|
32
|
31
|
36
|
32
|
35
|
31
|
32
|
22
|
24
|
26
|
29
|
30
|
31
|
27
|
31
|
29
|
|
2025/06
|
18
|
22
|
23
|
29
|
22
|
27
|
37
|
37
|
26
|
29
|
34
|
32
|
34
|
31
|
32
|
28
|
23
|
23
|
18
|
21
|
30
|
22
|
22
|
22
|
25
|
19
|
26
|
23
|
24
|
29
|
|
|
2025/05
|
36
|
50
|
43
|
30
|
31
|
25
|
26
|
20
|
30
|
36
|
41
|
33
|
40
|
45
|
41
|
44
|
33
|
34
|
45
|
45
|
28
|
22
|
29
|
35
|
38
|
42
|
24
|
19
|
22
|
24
|
17
|
|
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