Air Quality
Excellent
No health implications.
26
PM2.5
37
PM10
41
O3
0.7
CO
9
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Apr
47
Excellent
Tue
14 Apr
54
Good
Wed
15 Apr
56
Good
Thu
16 Apr
62
Good
Fri
17 Apr
56
Good
Sat
18 Apr
31
Excellent
Sun
19 Apr
30
Excellent
Air quality in the last 12 months (Hejiang)
|
2026/03
|
42
|
31
|
31
|
28
|
46
|
49
|
48
|
46
|
24
|
24
|
43
|
45
|
64
|
43
|
22
|
32
|
39
|
27
|
29
|
34
|
34
|
42
|
45
|
32
|
46
|
50
|
58
|
52
|
45
|
35
|
23
|
|
2026/02
|
55
|
77
|
73
|
78
|
93
|
102
|
95
|
39
|
38
|
58
|
49
|
74
|
79
|
86
|
96
|
56
|
111
|
94
|
84
|
63
|
76
|
104
|
102
|
41
|
50
|
46
|
50
|
25
|
|||
|
2026/01
|
31
|
28
|
34
|
50
|
49
|
69
|
85
|
86
|
120
|
172
|
136
|
151
|
147
|
177
|
158
|
198
|
170
|
209
|
130
|
12
|
21
|
37
|
70
|
74
|
67
|
59
|
82
|
110
|
114
|
45
|
27
|
|
2025/12
|
139
|
184
|
112
|
48
|
55
|
88
|
75
|
88
|
108
|
94
|
87
|
101
|
32
|
59
|
67
|
95
|
85
|
96
|
124
|
70
|
53
|
37
|
38
|
46
|
55
|
48
|
63
|
82
|
100
|
97
|
50
|
|
2025/11
|
28
|
28
|
30
|
27
|
41
|
44
|
24
|
25
|
35
|
35
|
25
|
30
|
31
|
38
|
36
|
53
|
23
|
20
|
34
|
54
|
60
|
94
|
49
|
58
|
63
|
77
|
87
|
116
|
133
|
163
|
|
|
2025/10
|
26
|
28
|
35
|
27
|
29
|
28
|
40
|
37
|
43
|
76
|
72
|
41
|
13
|
22
|
31
|
34
|
28
|
17
|
22
|
16
|
13
|
26
|
36
|
38
|
35
|
34
|
31
|
42
|
44
|
30
|
42
|
|
2025/09
|
47
|
50
|
42
|
55
|
49
|
28
|
46
|
36
|
41
|
50
|
50
|
19
|
18
|
27
|
36
|
39
|
35
|
21
|
16
|
25
|
18
|
15
|
16
|
20
|
39
|
30
|
31
|
33
|
16
|
26
|
|
|
2025/08
|
30
|
31
|
36
|
39
|
38
|
25
|
24
|
33
|
37
|
33
|
14
|
23
|
31
|
40
|
38
|
20
|
25
|
33
|
22
|
20
|
30
|
24
|
16
|
21
|
21
|
23
|
23
|
32
|
30
|
28
|
28
|
|
2025/07
|
22
|
16
|
22
|
23
|
21
|
29
|
32
|
31
|
15
|
29
|
29
|
28
|
33
|
31
|
35
|
36
|
35
|
36
|
23
|
19
|
22
|
19
|
22
|
15
|
20
|
21
|
19
|
27
|
29
|
35
|
26
|
|
2025/06
|
35
|
20
|
34
|
28
|
41
|
64
|
59
|
52
|
31
|
41
|
46
|
41
|
43
|
44
|
34
|
41
|
41
|
24
|
15
|
30
|
26
|
28
|
26
|
32
|
15
|
31
|
31
|
30
|
31
|
16
|
|
|
2025/05
|
39
|
61
|
91
|
63
|
40
|
46
|
33
|
34
|
46
|
62
|
46
|
53
|
69
|
61
|
63
|
63
|
55
|
62
|
51
|
61
|
35
|
28
|
52
|
59
|
45
|
41
|
35
|
16
|
23
|
30
|
28
|
|
2025/04
|
42
|
46
|
54
|
55
|
70
|
63
|
49
|
64
|
76
|
86
|
67
|
99
|
140
|
102
|
93
|
69
|
66
|
66
|
41
|
35
|
52
|
45
|
54
|
43
|
47
|
49
|
40
|
41
|
37
|
23
|
|
|
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