Air Quality
Excellent
No health implications.
19
PM2.5
29
PM10
89
O3
0.3
CO
5
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 May
57
Good
Sat
23 May
57
Good
Sun
24 May
51
Good
Mon
25 May
57
Good
Tue
26 May
54
Good
Wed
27 May
61
Good
Thu
28 May
30
Excellent
Air quality in the last 12 months (Heishui)
|
2026/04
|
38
|
37
|
48
|
54
|
49
|
39
|
29
|
27
|
37
|
33
|
30
|
34
|
34
|
32
|
32
|
33
|
38
|
41
|
75
|
76
|
32
|
35
|
53
|
52
|
52
|
49
|
35
|
29
|
33
|
33
|
|
|
2026/03
|
27
|
27
|
32
|
38
|
46
|
47
|
40
|
34
|
29
|
31
|
36
|
38
|
27
|
28
|
45
|
29
|
25
|
30
|
38
|
44
|
39
|
43
|
36
|
37
|
33
|
31
|
42
|
41
|
31
|
25
|
37
|
|
2026/02
|
55
|
55
|
53
|
47
|
57
|
56
|
43
|
33
|
28
|
47
|
47
|
44
|
52
|
51
|
50
|
33
|
50
|
40
|
43
|
38
|
34
|
39
|
51
|
41
|
39
|
43
|
37
|
26
|
|||
|
2026/01
|
42
|
37
|
26
|
37
|
43
|
40
|
48
|
51
|
57
|
64
|
72
|
73
|
81
|
64
|
55
|
55
|
60
|
66
|
41
|
35
|
38
|
47
|
47
|
52
|
59
|
93
|
82
|
70
|
58
|
47
|
53
|
|
2025/12
|
62
|
57
|
44
|
40
|
48
|
49
|
49
|
54
|
60
|
51
|
62
|
52
|
52
|
52
|
55
|
68
|
69
|
73
|
79
|
52
|
43
|
41
|
45
|
48
|
52
|
44
|
59
|
63
|
54
|
60
|
46
|
|
2025/11
|
29
|
29
|
29
|
25
|
22
|
21
|
26
|
39
|
38
|
27
|
31
|
37
|
38
|
38
|
35
|
34
|
36
|
30
|
35
|
47
|
51
|
56
|
46
|
54
|
59
|
55
|
55
|
59
|
59
|
58
|
|
|
2025/10
|
21
|
24
|
21
|
19
|
24
|
19
|
19
|
21
|
23
|
22
|
15
|
21
|
22
|
28
|
29
|
32
|
26
|
27
|
25
|
19
|
17
|
16
|
18
|
16
|
20
|
29
|
29
|
30
|
27
|
31
|
36
|
|
2025/09
|
25
|
24
|
28
|
28
|
27
|
37
|
41
|
33
|
32
|
24
|
18
|
23
|
30
|
33
|
32
|
17
|
19
|
15
|
20
|
25
|
18
|
18
|
22
|
28
|
33
|
35
|
26
|
18
|
20
|
23
|
|
|
2025/08
|
31
|
31
|
33
|
32
|
29
|
25
|
24
|
25
|
17
|
18
|
26
|
31
|
26
|
27
|
27
|
24
|
22
|
21
|
20
|
18
|
19
|
17
|
20
|
22
|
21
|
25
|
23
|
19
|
16
|
20
|
22
|
|
2025/07
|
26
|
23
|
20
|
20
|
20
|
23
|
23
|
26
|
24
|
29
|
21
|
23
|
25
|
27
|
32
|
35
|
37
|
30
|
28
|
18
|
17
|
24
|
20
|
18
|
20
|
17
|
22
|
24
|
25
|
22
|
27
|
|
2025/06
|
27
|
26
|
34
|
30
|
35
|
43
|
39
|
34
|
33
|
28
|
28
|
36
|
38
|
42
|
36
|
36
|
38
|
26
|
24
|
30
|
28
|
25
|
26
|
20
|
24
|
29
|
33
|
35
|
28
|
21
|
|
|
2025/05
|
36
|
42
|
48
|
44
|
30
|
31
|
31
|
35
|
76
|
66
|
47
|
44
|
35
|
42
|
32
|
51
|
57
|
63
|
49
|
41
|
47
|
46
|
53
|
42
|
37
|
41
|
27
|
25
|
32
|
29
|
27
|
|
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