Air Quality
Excellent
No health implications.
17
PM2.5
31
PM10
85
O3
0.3
CO
5
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 May
52
Good
Mon
5 May
49
Excellent
Tue
6 May
53
Good
Wed
7 May
48
Excellent
Thu
8 May
47
Excellent
Fri
9 May
38
Excellent
Sat
10 May
15
Excellent
Air quality in the last 12 months (HengZhou City)
|
2025/02
|
54
|
32
|
14
|
43
|
73
|
48
|
15
|
41
|
59
|
85
|
106
|
42
|
51
|
106
|
75
|
37
|
41
|
33
|
72
|
71
|
33
|
51
|
16
|
43
|
135
|
43
|
52
|
56
|
|||
|
2025/01
|
125
|
119
|
94
|
100
|
110
|
132
|
117
|
101
|
79
|
40
|
49
|
72
|
97
|
103
|
71
|
69
|
80
|
86
|
111
|
116
|
114
|
96
|
85
|
68
|
52
|
18
|
46
|
60
|
214
|
91
|
49
|
|
2024/12
|
75
|
80
|
72
|
79
|
85
|
74
|
39
|
31
|
59
|
85
|
45
|
36
|
46
|
57
|
44
|
49
|
76
|
63
|
59
|
84
|
102
|
84
|
99
|
94
|
106
|
97
|
94
|
73
|
102
|
112
|
115
|
|
2024/11
|
44
|
51
|
73
|
66
|
64
|
69
|
62
|
64
|
66
|
61
|
70
|
71
|
74
|
71
|
51
|
54
|
55
|
37
|
26
|
24
|
27
|
33
|
44
|
55
|
62
|
24
|
36
|
38
|
54
|
67
|
|
|
2024/10
|
43
|
28
|
46
|
60
|
58
|
58
|
61
|
53
|
42
|
46
|
55
|
64
|
63
|
56
|
19
|
30
|
29
|
26
|
25
|
31
|
38
|
41
|
23
|
30
|
43
|
44
|
29
|
21
|
37
|
46
|
55
|
|
2024/09
|
27
|
30
|
27
|
39
|
45
|
33
|
11
|
19
|
24
|
23
|
32
|
39
|
46
|
49
|
40
|
34
|
24
|
32
|
41
|
42
|
35
|
19
|
30
|
39
|
38
|
44
|
56
|
45
|
32
|
38
|
|
|
2024/08
|
20
|
19
|
30
|
25
|
29
|
26
|
25
|
23
|
24
|
31
|
25
|
21
|
20
|
24
|
21
|
26
|
26
|
22
|
28
|
24
|
23
|
22
|
27
|
29
|
29
|
31
|
29
|
33
|
32
|
36
|
31
|
|
2024/07
|
21
|
13
|
18
|
25
|
19
|
17
|
18
|
19
|
21
|
24
|
20
|
24
|
23
|
24
|
25
|
25
|
20
|
19
|
20
|
21
|
28
|
22
|
15
|
19
|
21
|
35
|
29
|
26
|
19
|
12
|
11
|
|
2024/06
|
25
|
36
|
22
|
22
|
10
|
18
|
24
|
20
|
21
|
19
|
21
|
26
|
26
|
28
|
23
|
31
|
38
|
26
|
33
|
30
|
30
|
20
|
22
|
17
|
16
|
14
|
21
|
23
|
19
|
23
|
|
|
2024/05
|
20
|
25
|
31
|
32
|
23
|
36
|
33
|
40
|
28
|
34
|
35
|
29
|
43
|
60
|
45
|
56
|
53
|
48
|
18
|
16
|
23
|
26
|
49
|
43
|
29
|
17
|
28
|
18
|
32
|
27
|
13
|
|
2024/04
|
56
|
51
|
55
|
52
|
33
|
20
|
15
|
19
|
41
|
38
|
49
|
51
|
50
|
45
|
54
|
40
|
46
|
38
|
46
|
43
|
26
|
34
|
34
|
47
|
43
|
53
|
59
|
49
|
50
|
54
|
|
|
2024/03
|
40
|
57
|
54
|
42
|
56
|
53
|
72
|
72
|
50
|
20
|
23
|
47
|
43
|
23
|
34
|
53
|
56
|
55
|
25
|
66
|
82
|
50
|
46
|
50
|
49
|
52
|
55
|
40
|
60
|
53
|
44
|
|
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