Air Quality
Excellent
No health implications.
13
PM2.5
29
PM10
146
O3
0.3
CO
10
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 May
69
Good
Tue
13 May
88
Good
Wed
14 May
59
Good
Thu
15 May
75
Good
Fri
16 May
59
Good
Sat
17 May
54
Good
Sun
18 May
22
Excellent
Air quality in the last 12 months (Zhangbei)
|
2025/02
|
71
|
28
|
18
|
24
|
32
|
54
|
20
|
18
|
26
|
45
|
49
|
38
|
46
|
41
|
66
|
18
|
18
|
16
|
16
|
17
|
17
|
18
|
17
|
36
|
35
|
33
|
56
|
45
|
|||
|
2025/01
|
32
|
24
|
28
|
27
|
39
|
16
|
18
|
15
|
20
|
27
|
37
|
29
|
31
|
23
|
31
|
47
|
40
|
43
|
39
|
41
|
27
|
33
|
53
|
52
|
78
|
104
|
19
|
27
|
93
|
56
|
74
|
|
2024/12
|
34
|
18
|
20
|
18
|
19
|
22
|
16
|
24
|
23
|
27
|
33
|
33
|
31
|
30
|
32
|
28
|
24
|
18
|
29
|
35
|
17
|
25
|
27
|
44
|
54
|
27
|
23
|
45
|
74
|
59
|
36
|
|
2024/11
|
52
|
46
|
30
|
19
|
20
|
30
|
51
|
83
|
119
|
58
|
50
|
44
|
66
|
53
|
44
|
52
|
34
|
30
|
59
|
50
|
23
|
25
|
48
|
89
|
32
|
29
|
20
|
15
|
21
|
50
|
|
|
2024/10
|
12
|
15
|
21
|
35
|
44
|
29
|
13
|
24
|
32
|
27
|
35
|
42
|
63
|
45
|
34
|
48
|
62
|
24
|
18
|
21
|
30
|
16
|
33
|
38
|
51
|
58
|
15
|
24
|
23
|
36
|
51
|
|
2024/09
|
19
|
15
|
19
|
30
|
14
|
14
|
21
|
25
|
30
|
15
|
18
|
17
|
20
|
14
|
17
|
16
|
12
|
27
|
42
|
14
|
12
|
14
|
23
|
30
|
13
|
24
|
52
|
49
|
26
|
13
|
|
|
2024/08
|
26
|
36
|
41
|
46
|
30
|
21
|
33
|
30
|
32
|
54
|
15
|
17
|
17
|
24
|
29
|
35
|
32
|
26
|
26
|
16
|
15
|
17
|
21
|
23
|
19
|
16
|
23
|
27
|
28
|
25
|
34
|
|
2024/07
|
18
|
29
|
25
|
25
|
24
|
21
|
24
|
27
|
52
|
49
|
46
|
36
|
24
|
38
|
41
|
27
|
18
|
21
|
26
|
25
|
45
|
52
|
39
|
34
|
32
|
21
|
28
|
22
|
17
|
40
|
30
|
|
2024/06
|
18
|
16
|
24
|
36
|
37
|
34
|
15
|
28
|
17
|
25
|
23
|
28
|
25
|
17
|
19
|
21
|
22
|
38
|
41
|
46
|
53
|
374
|
123
|
15
|
18
|
41
|
55
|
46
|
43
|
27
|
|
|
2024/05
|
26
|
31
|
41
|
61
|
42
|
35
|
31
|
30
|
50
|
135
|
65
|
26
|
28
|
46
|
27
|
48
|
44
|
58
|
58
|
38
|
47
|
60
|
69
|
43
|
30
|
30
|
19
|
21
|
48
|
31
|
21
|
|
2024/04
|
53
|
58
|
28
|
43
|
46
|
22
|
28
|
43
|
55
|
46
|
45
|
70
|
67
|
100
|
183
|
34
|
30
|
41
|
69
|
21
|
38
|
64
|
20
|
42
|
109
|
71
|
142
|
39
|
20
|
18
|
|
|
2024/03
|
25
|
70
|
28
|
57
|
50
|
14
|
24
|
19
|
35
|
46
|
29
|
19
|
26
|
36
|
62
|
106
|
30
|
164
|
59
|
22
|
58
|
38
|
42
|
45
|
34
|
71
|
185
|
198
|
80
|
26
|
18
|
|
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