Air Quality
Excellent
No health implications.
7
PM2.5
4
PM10
55
O3
0.5
CO
18
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
11 Mar
62
Good
Wed
12 Mar
48
Excellent
Thu
13 Mar
50
Excellent
Fri
14 Mar
73
Good
Sat
15 Mar
77
Good
Sun
16 Mar
55
Good
Mon
17 Mar
32
Excellent
Air quality in the last 12 months (Henan)
|
2025/01
|
33
|
44
|
37
|
51
|
35
|
40
|
54
|
55
|
50
|
57
|
35
|
23
|
24
|
35
|
45
|
40
|
45
|
52
|
38
|
38
|
40
|
49
|
50
|
53
|
77
|
53
|
17
|
21
|
40
|
28
|
30
|
|
2024/12
|
31
|
33
|
31
|
42
|
42
|
38
|
48
|
49
|
44
|
49
|
49
|
47
|
40
|
37
|
28
|
25
|
26
|
44
|
45
|
41
|
55
|
44
|
43
|
62
|
61
|
47
|
58
|
39
|
47
|
35
|
30
|
|
2024/11
|
27
|
30
|
28
|
33
|
32
|
27
|
29
|
30
|
36
|
39
|
47
|
42
|
44
|
35
|
38
|
45
|
38
|
38
|
36
|
30
|
31
|
26
|
28
|
39
|
57
|
31
|
22
|
24
|
37
|
33
|
|
|
2024/10
|
26
|
27
|
31
|
36
|
34
|
30
|
28
|
30
|
29
|
20
|
25
|
23
|
26
|
26
|
30
|
21
|
22
|
23
|
25
|
31
|
52
|
42
|
33
|
30
|
37
|
33
|
28
|
31
|
36
|
39
|
25
|
|
2024/09
|
29
|
19
|
22
|
16
|
16
|
16
|
19
|
24
|
12
|
15
|
15
|
19
|
13
|
14
|
15
|
13
|
15
|
16
|
18
|
13
|
13
|
22
|
30
|
26
|
34
|
31
|
33
|
33
|
27
|
25
|
|
|
2024/08
|
28
|
28
|
24
|
29
|
28
|
29
|
28
|
16
|
25
|
31
|
24
|
27
|
28
|
18
|
25
|
33
|
26
|
23
|
28
|
30
|
29
|
29
|
24
|
18
|
21
|
17
|
25
|
30
|
24
|
24
|
26
|
|
2024/07
|
22
|
22
|
24
|
19
|
28
|
35
|
27
|
18
|
21
|
24
|
32
|
27
|
21
|
20
|
26
|
23
|
23
|
28
|
27
|
18
|
97
|
67
|
26
|
54
|
57
|
35
|
24
|
24
|
26
|
24
|
26
|
|
2024/06
|
27
|
25
|
27
|
29
|
33
|
22
|
25
|
16
|
20
|
22
|
21
|
25
|
22
|
20
|
21
|
14
|
18
|
23
|
25
|
17
|
15
|
18
|
26
|
18
|
29
|
27
|
27
|
19
|
28
|
18
|
|
|
2024/05
|
27
|
22
|
25
|
49
|
44
|
41
|
36
|
23
|
26
|
34
|
19
|
26
|
26
|
19
|
22
|
21
|
45
|
26
|
40
|
49
|
34
|
34
|
41
|
51
|
22
|
32
|
32
|
17
|
14
|
18
|
27
|
|
2024/04
|
40
|
59
|
64
|
46
|
28
|
15
|
22
|
29
|
22
|
34
|
34
|
25
|
34
|
25
|
97
|
85
|
43
|
29
|
46
|
46
|
32
|
33
|
26
|
24
|
30
|
28
|
31
|
74
|
39
|
24
|
|
|
2024/03
|
56
|
52
|
52
|
63
|
49
|
69
|
50
|
54
|
46
|
46
|
40
|
32
|
34
|
31
|
31
|
146
|
76
|
77
|
63
|
48
|
37
|
40
|
69
|
24
|
28
|
22
|
41
|
38
|
25
|
28
|
35
|
|
2024/02
|
43
|
64
|
50
|
45
|
38
|
54
|
50
|
30
|
30
|
39
|
25
|
26
|
25
|
42
|
33
|
29
|
30
|
100
|
137
|
101
|
111
|
107
|
112
|
80
|
68
|
68
|
63
|
57
|
46
|
||
|
1
|
2
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3
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4
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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