Air Quality
Excellent
No health implications.
6
PM2.5
10
PM10
77
O3
0.4
CO
6
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Apr
36
Excellent
Wed
30 Apr
73
Good
Thu
1 May
98
Good
Fri
2 May
106
Light
Sat
3 May
89
Good
Sun
4 May
82
Good
Mon
5 May
49
Excellent
Air quality in the last 12 months (Hejiang)
|
2025/02
|
63
|
50
|
39
|
36
|
53
|
29
|
22
|
36
|
50
|
61
|
84
|
74
|
36
|
42
|
52
|
68
|
66
|
53
|
64
|
61
|
55
|
32
|
42
|
37
|
60
|
55
|
83
|
85
|
|||
|
2025/01
|
152
|
176
|
149
|
179
|
149
|
135
|
107
|
48
|
51
|
43
|
50
|
59
|
98
|
103
|
86
|
101
|
129
|
101
|
75
|
128
|
172
|
179
|
199
|
97
|
46
|
43
|
57
|
81
|
190
|
163
|
107
|
|
2024/12
|
131
|
157
|
99
|
109
|
53
|
45
|
40
|
34
|
41
|
58
|
71
|
51
|
47
|
50
|
56
|
83
|
112
|
121
|
98
|
106
|
141
|
83
|
59
|
99
|
109
|
96
|
122
|
120
|
116
|
83
|
86
|
|
2024/11
|
47
|
38
|
69
|
65
|
41
|
58
|
57
|
64
|
52
|
59
|
55
|
40
|
43
|
52
|
65
|
42
|
21
|
20
|
19
|
21
|
38
|
46
|
44
|
25
|
18
|
29
|
33
|
43
|
54
|
79
|
|
|
2024/10
|
15
|
22
|
29
|
35
|
48
|
57
|
57
|
50
|
58
|
86
|
60
|
27
|
35
|
40
|
54
|
73
|
26
|
45
|
44
|
23
|
33
|
23
|
33
|
72
|
79
|
64
|
35
|
48
|
72
|
83
|
80
|
|
2024/09
|
29
|
37
|
24
|
30
|
28
|
30
|
38
|
29
|
20
|
30
|
30
|
28
|
41
|
59
|
44
|
36
|
33
|
32
|
28
|
47
|
28
|
36
|
44
|
58
|
86
|
82
|
57
|
54
|
66
|
12
|
|
|
2024/08
|
38
|
21
|
20
|
17
|
31
|
24
|
26
|
22
|
30
|
25
|
50
|
71
|
60
|
49
|
43
|
30
|
42
|
54
|
50
|
52
|
49
|
40
|
25
|
23
|
18
|
25
|
43
|
36
|
30
|
34
|
43
|
|
2024/07
|
31
|
28
|
35
|
24
|
27
|
37
|
34
|
41
|
17
|
16
|
17
|
25
|
26
|
12
|
21
|
29
|
30
|
24
|
22
|
29
|
25
|
21
|
26
|
27
|
29
|
43
|
43
|
30
|
27
|
27
|
36
|
|
2024/06
|
54
|
32
|
36
|
26
|
34
|
39
|
24
|
25
|
35
|
26
|
34
|
31
|
53
|
58
|
52
|
52
|
33
|
47
|
35
|
34
|
23
|
26
|
34
|
33
|
35
|
42
|
14
|
22
|
22
|
38
|
|
|
2024/05
|
37
|
38
|
28
|
28
|
33
|
58
|
64
|
55
|
53
|
58
|
42
|
42
|
41
|
51
|
48
|
40
|
53
|
46
|
38
|
31
|
29
|
26
|
36
|
50
|
43
|
21
|
31
|
32
|
31
|
26
|
40
|
|
2024/04
|
62
|
51
|
44
|
39
|
31
|
33
|
24
|
26
|
48
|
33
|
41
|
55
|
63
|
69
|
78
|
38
|
37
|
45
|
24
|
49
|
51
|
50
|
47
|
40
|
32
|
39
|
39
|
46
|
26
|
16
|
|
|
2024/03
|
87
|
69
|
88
|
101
|
100
|
90
|
76
|
75
|
71
|
97
|
83
|
92
|
105
|
99
|
74
|
64
|
93
|
32
|
43
|
62
|
74
|
93
|
91
|
88
|
29
|
49
|
47
|
46
|
58
|
72
|
70
|
|
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