Air Quality
Excellent
No health implications.
3
PM2.5
7
PM10
26
O3
0.2
CO
3
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Jul
42
Excellent
Tue
22 Jul
45
Excellent
Wed
23 Jul
51
Good
Thu
24 Jul
42
Excellent
Fri
25 Jul
45
Excellent
Sat
26 Jul
48
Excellent
Sun
27 Jul
34
Excellent
Air quality in the last 12 months (Keqiao)
|
2025/06
|
26
|
20
|
31
|
44
|
39
|
31
|
52
|
34
|
33
|
26
|
19
|
34
|
24
|
19
|
10
|
19
|
43
|
40
|
31
|
25
|
27
|
33
|
22
|
29
|
44
|
37
|
28
|
22
|
23
|
22
|
|
|
2025/05
|
55
|
54
|
59
|
45
|
37
|
86
|
88
|
54
|
19
|
37
|
39
|
46
|
35
|
38
|
80
|
65
|
28
|
65
|
38
|
22
|
14
|
38
|
21
|
51
|
63
|
46
|
45
|
30
|
34
|
51
|
48
|
|
2025/04
|
51
|
57
|
66
|
60
|
69
|
87
|
64
|
58
|
71
|
66
|
60
|
165
|
96
|
100
|
56
|
56
|
57
|
69
|
66
|
77
|
49
|
34
|
46
|
55
|
48
|
55
|
35
|
55
|
49
|
50
|
|
|
2025/03
|
44
|
50
|
38
|
27
|
46
|
44
|
67
|
75
|
64
|
65
|
60
|
46
|
32
|
47
|
23
|
57
|
36
|
55
|
64
|
64
|
51
|
62
|
65
|
63
|
71
|
68
|
66
|
66
|
58
|
61
|
40
|
|
2025/02
|
32
|
57
|
84
|
55
|
46
|
60
|
61
|
36
|
44
|
57
|
69
|
95
|
97
|
72
|
96
|
53
|
77
|
40
|
62
|
49
|
32
|
59
|
98
|
96
|
109
|
94
|
79
|
51
|
|||
|
2025/01
|
85
|
83
|
76
|
83
|
109
|
91
|
88
|
80
|
49
|
51
|
62
|
71
|
78
|
83
|
60
|
56
|
72
|
84
|
76
|
99
|
146
|
129
|
65
|
47
|
35
|
46
|
46
|
48
|
110
|
73
|
56
|
|
2024/12
|
57
|
64
|
107
|
49
|
46
|
93
|
162
|
41
|
51
|
47
|
33
|
91
|
83
|
99
|
59
|
63
|
66
|
86
|
42
|
59
|
87
|
66
|
74
|
61
|
88
|
142
|
65
|
63
|
67
|
94
|
81
|
|
2024/11
|
9
|
40
|
70
|
69
|
38
|
42
|
35
|
39
|
35
|
48
|
56
|
57
|
43
|
40
|
35
|
33
|
23
|
31
|
37
|
48
|
58
|
94
|
44
|
35
|
33
|
37
|
47
|
53
|
42
|
54
|
|
|
2024/10
|
24
|
33
|
27
|
24
|
22
|
16
|
14
|
34
|
50
|
57
|
74
|
49
|
33
|
51
|
49
|
41
|
38
|
31
|
15
|
45
|
60
|
37
|
52
|
31
|
33
|
21
|
17
|
53
|
48
|
41
|
31
|
|
2024/09
|
59
|
63
|
38
|
33
|
29
|
40
|
48
|
35
|
27
|
43
|
18
|
28
|
14
|
24
|
26
|
21
|
18
|
22
|
20
|
17
|
20
|
33
|
31
|
39
|
50
|
49
|
26
|
42
|
38
|
30
|
|
|
2024/08
|
22
|
30
|
46
|
40
|
46
|
46
|
47
|
52
|
50
|
48
|
41
|
34
|
25
|
30
|
37
|
48
|
39
|
32
|
14
|
19
|
15
|
23
|
48
|
47
|
48
|
51
|
53
|
35
|
26
|
26
|
37
|
|
2024/07
|
50
|
28
|
27
|
27
|
34
|
36
|
36
|
33
|
29
|
32
|
46
|
47
|
41
|
42
|
40
|
29
|
32
|
29
|
25
|
30
|
35
|
21
|
22
|
18
|
30
|
25
|
14
|
16
|
14
|
14
|
22
|
|
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