Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 Aug
Thu
13 Aug
Fri
14 Aug
Sat
15 Aug
Sun
16 Aug
Mon
17 Aug
Tue
18 Aug
Real-time AQI (Monitoring Station in Yan'an)
延大医附院
1812
PM2.5
15
PM10
51
O3
0.4
CO
2
SO2
11
NO2
百米大道
2316
PM2.5
20
PM10
50
O3
0.5
CO
2
SO2
11
NO2
志丹路
2013
PM2.5
19
PM10
64
O3
0.5
CO
3
SO2
11
NO2
Air quality in the last 12 months (Yan'an)
|
2026/07
|
36
|
36
|
38
|
35
|
35
|
40
|
36
|
41
|
46
|
42
|
21
|
31
|
38
|
46
|
32
|
30
|
32
|
45
|
46
|
38
|
38
|
34
|
42
|
39
|
45
|
43
|
24
|
32
|
30
|
31
|
19
|
|
2026/06
|
60
|
53
|
58
|
47
|
36
|
36
|
39
|
39
|
31
|
31
|
38
|
41
|
32
|
32
|
38
|
43
|
45
|
38
|
36
|
27
|
28
|
31
|
32
|
37
|
37
|
39
|
42
|
44
|
42
|
35
|
|
|
2026/05
|
48
|
28
|
42
|
41
|
43
|
59
|
46
|
40
|
52
|
68
|
62
|
63
|
53
|
39
|
84
|
48
|
26
|
36
|
38
|
45
|
47
|
34
|
41
|
43
|
28
|
42
|
62
|
43
|
38
|
39
|
64
|
|
2026/04
|
51
|
57
|
129
|
67
|
79
|
64
|
64
|
61
|
64
|
57
|
52
|
47
|
39
|
62
|
51
|
36
|
43
|
55
|
200
|
108
|
56
|
43
|
49
|
62
|
62
|
61
|
175
|
61
|
44
|
50
|
|
|
2026/03
|
25
|
22
|
39
|
65
|
65
|
33
|
42
|
59
|
50
|
64
|
46
|
77
|
244
|
74
|
54
|
55
|
60
|
90
|
69
|
76
|
78
|
95
|
69
|
63
|
62
|
65
|
57
|
57
|
52
|
53
|
41
|
|
2026/02
|
61
|
43
|
59
|
67
|
67
|
64
|
30
|
38
|
75
|
105
|
86
|
77
|
62
|
66
|
48
|
55
|
97
|
45
|
57
|
72
|
186
|
468
|
171
|
81
|
83
|
99
|
67
|
29
|
|||
|
2026/01
|
70
|
51
|
41
|
60
|
51
|
42
|
53
|
56
|
53
|
68
|
59
|
59
|
58
|
79
|
72
|
60
|
77
|
58
|
28
|
28
|
58
|
65
|
68
|
70
|
222
|
209
|
103
|
110
|
104
|
83
|
84
|
|
2025/12
|
73
|
41
|
50
|
57
|
66
|
61
|
60
|
69
|
76
|
75
|
74
|
71
|
108
|
74
|
71
|
68
|
64
|
74
|
62
|
59
|
66
|
72
|
83
|
64
|
50
|
58
|
62
|
60
|
57
|
50
|
48
|
|
2025/11
|
47
|
47
|
57
|
64
|
83
|
80
|
38
|
46
|
95
|
89
|
69
|
52
|
51
|
55
|
59
|
52
|
18
|
32
|
42
|
51
|
53
|
59
|
67
|
109
|
66
|
213
|
205
|
72
|
70
|
81
|
|
|
2025/10
|
42
|
25
|
32
|
24
|
19
|
23
|
20
|
27
|
10
|
10
|
20
|
24
|
28
|
38
|
21
|
36
|
33
|
31
|
41
|
37
|
35
|
32
|
52
|
50
|
33
|
37
|
47
|
48
|
48
|
49
|
48
|
|
2025/09
|
30
|
39
|
14
|
14
|
55
|
29
|
50
|
49
|
48
|
41
|
35
|
19
|
33
|
42
|
49
|
34
|
24
|
23
|
17
|
25
|
21
|
12
|
19
|
27
|
32
|
41
|
29
|
39
|
36
|
41
|
|
|
2025/08
|
35
|
43
|
43
|
32
|
37
|
45
|
43
|
38
|
25
|
26
|
35
|
36
|
33
|
42
|
37
|
25
|
36
|
34
|
37
|
25
|
46
|
33
|
15
|
27
|
31
|
35
|
19
|
19
|
16
|
16
|
24
|
|
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
*: primary pollution