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
18 Jan
Mon
19 Jan
Tue
20 Jan
Wed
21 Jan
Thu
22 Jan
Fri
23 Jan
Sat
24 Jan
Yan'an Air quality rank
Real-time AQI (Monitoring Station in Yan'an)
延大医附院
308
PM2.5
30
PM10
48
O3
0.4
CO
8
SO2
22
NO2
百米大道
308
PM2.5
30
PM10
61
O3
0.2
CO
8
SO2
16
NO2
志丹路
306
PM2.5
30
PM10
65
O3
0.5
CO
6
SO2
11
NO2
Air quality in the last 12 months (Yan'an)
|
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
|
|
2025/07
|
22
|
24
|
21
|
25
|
23
|
30
|
27
|
28
|
36
|
39
|
43
|
45
|
44
|
39
|
48
|
37
|
32
|
44
|
40
|
21
|
27
|
42
|
32
|
27
|
28
|
18
|
27
|
37
|
38
|
33
|
42
|
|
2025/06
|
34
|
32
|
27
|
28
|
38
|
41
|
45
|
33
|
51
|
45
|
49
|
50
|
58
|
42
|
47
|
48
|
41
|
38
|
30
|
30
|
29
|
36
|
33
|
44
|
37
|
29
|
29
|
22
|
39
|
22
|
|
|
2025/05
|
75
|
105
|
42
|
91
|
285
|
269
|
146
|
133
|
65
|
48
|
43
|
56
|
67
|
75
|
61
|
136
|
156
|
73
|
63
|
58
|
60
|
183
|
65
|
63
|
45
|
25
|
37
|
47
|
52
|
53
|
24
|
|
2025/04
|
58
|
59
|
85
|
107
|
62
|
81
|
98
|
119
|
112
|
59
|
172
|
207
|
140
|
49
|
47
|
123
|
104
|
81
|
77
|
74
|
224
|
158
|
68
|
48
|
61
|
56
|
41
|
38
|
64
|
137
|
|
|
2025/03
|
84
|
67
|
30
|
36
|
46
|
53
|
71
|
78
|
65
|
66
|
268
|
164
|
74
|
52
|
49
|
31
|
41
|
41
|
37
|
44
|
56
|
65
|
128
|
325
|
223
|
304
|
187
|
181
|
44
|
48
|
51
|
|
2025/02
|
63
|
50
|
41
|
56
|
38
|
121
|
48
|
33
|
51
|
62
|
78
|
67
|
63
|
63
|
62
|
72
|
66
|
70
|
63
|
57
|
65
|
41
|
39
|
47
|
60
|
65
|
62
|
62
|
|||
|
2025/01
|
61
|
59
|
60
|
71
|
105
|
45
|
46
|
43
|
46
|
52
|
65
|
69
|
87
|
41
|
38
|
48
|
57
|
66
|
62
|
57
|
58
|
78
|
109
|
143
|
66
|
59
|
34
|
71
|
118
|
66
|
59
|
|
2024/12
|
46
|
53
|
53
|
55
|
53
|
46
|
41
|
41
|
60
|
52
|
49
|
57
|
48
|
43
|
43
|
49
|
53
|
45
|
70
|
60
|
41
|
50
|
69
|
86
|
75
|
45
|
48
|
52
|
56
|
69
|
69
|
|
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