Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
PM2.5
PM10
O3
CO
SO2
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
28 Nov
Sat
29 Nov
Sun
30 Nov
Mon
1 Dec
Tue
2 Dec
Wed
3 Dec
Thu
4 Dec
Real-time AQI (Monitoring Station in Yan'an)
延大医附院
5823
PM2.5
66 *
PM10
2
O3
0.8
CO
7
SO2
29
NO2
百米大道
6938
PM2.5
87 *
PM10
0
O3
1.0
CO
2
SO2
44
NO2
西北局旧址
5826
PM2.5
65 *
PM10
4
O3
1.0
CO
6
SO2
49
NO2
Air quality in the last 12 months (Yan'an)
|
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
|
|
2024/11
|
32
|
29
|
35
|
40
|
42
|
50
|
64
|
73
|
80
|
73
|
73
|
52
|
38
|
35
|
70
|
60
|
41
|
49
|
38
|
40
|
48
|
60
|
86
|
74
|
51
|
48
|
62
|
46
|
42
|
43
|
|
|
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