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
31 May
Sun
1 Jun
Mon
2 Jun
Tue
3 Jun
Wed
4 Jun
Thu
5 Jun
Fri
6 Jun
Real-time AQI (Monitoring Station in Yan'an)
枣园
347
PM2.5
20
PM10
107
O3
0.3
CO
12
SO2
9
NO2
延大医附院
333
PM2.5
19
PM10
103
O3
0.2
CO
4
SO2
6
NO2
百米大道
3311
PM2.5
27
PM10
103
O3
0.4
CO
4
SO2
36
NO2
西北局旧址
3213
PM2.5
22
PM10
101
O3
0.3
CO
2
SO2
10
NO2
Air quality in the last 12 months (Yan'an)
|
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
|
|
|
2024/10
|
59
|
37
|
34
|
45
|
51
|
49
|
34
|
42
|
50
|
37
|
47
|
53
|
50
|
45
|
50
|
67
|
62
|
28
|
27
|
20
|
22
|
27
|
38
|
45
|
54
|
42
|
47
|
43
|
50
|
45
|
35
|
|
2024/09
|
31
|
47
|
37
|
40
|
33
|
40
|
20
|
40
|
61
|
32
|
35
|
41
|
35
|
23
|
43
|
38
|
33
|
34
|
38
|
20
|
24
|
33
|
44
|
49
|
51
|
52
|
78
|
63
|
29
|
36
|
|
|
2024/08
|
27
|
42
|
28
|
24
|
27
|
28
|
16
|
31
|
50
|
100
|
38
|
30
|
34
|
36
|
27
|
29
|
36
|
19
|
22
|
25
|
27
|
37
|
41
|
44
|
41
|
20
|
27
|
30
|
36
|
37
|
40
|
|
2024/07
|
32
|
35
|
37
|
23
|
31
|
37
|
42
|
41
|
37
|
39
|
38
|
40
|
40
|
55
|
38
|
20
|
26
|
23
|
32
|
22
|
40
|
42
|
30
|
19
|
42
|
39
|
44
|
46
|
40
|
24
|
33
|
|
2024/06
|
50
|
31
|
31
|
33
|
26
|
40
|
28
|
30
|
31
|
30
|
40
|
42
|
50
|
56
|
47
|
43
|
33
|
33
|
34
|
40
|
41
|
53
|
66
|
76
|
85
|
80
|
62
|
61
|
52
|
32
|
|
|
2024/05
|
37
|
40
|
51
|
29
|
28
|
47
|
48
|
50
|
52
|
70
|
116
|
50
|
47
|
57
|
75
|
56
|
79
|
70
|
58
|
55
|
56
|
55
|
46
|
53
|
45
|
44
|
38
|
44
|
39
|
56
|
46
|
|
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