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
21 Apr
Wed
22 Apr
Thu
23 Apr
Fri
24 Apr
Sat
25 Apr
Sun
26 Apr
Mon
27 Apr
Real-time AQI (Monitoring Station in Yan'an)
延大医附院
3021
PM2.5
30
PM10
82
O3
0.5
CO
1
SO2
6
NO2
百米大道
9226
PM2.5
108 *
PM10
71
O3
0.6
CO
1
SO2
17
NO2
志丹路
4322
PM2.5
43
PM10
82
O3
0.4
CO
2
SO2
7
NO2
Air quality in the last 12 months (Yan'an)
|
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
|
|
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
|
|
|
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