Ypsilanti, Michigan, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Ypsilanti, Michigan, United States
AQI Trends: Highest and Lowest
Same Day Analysis (14th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Oct - 15th Oct 2025
Ypsilanti, Michigan, United States
7 AM14th Oct 2025
7 PM
6 AM15th Oct 2025
67AQI
38AQI
50AQI
10AQI
In the last 24 hours,
Ypsilanti's AQI reached its highest point of 67 at 2 PM during the Day, while the lowest point, 10, was recorded at 6 AM during the Night between 14th Oct and 15th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Ypsilanti, Michigan, United States
21°C13/30°C
21°C12/29°C
20°C11/30°C
22°C11/32°C
19°C15/25°C
19°C13/25°C
21°C15/30°C
21°C17/30°C
19°C15/25°C
19°C18/21°C
19°C16/23°C
19°C13/28°C
21°C13/31°C
21°C15/30°C
20°C11/30°C
20°C11/30°C
18°C13/26°C
16°C9/26°C
19°C9/31°C
22°C12/33°C
22°C15/32°C
22°C14/31°C
17°C12/21°C
12°C7/18°C
10°C3/19°C
12°C2/23°C
14°C8/18°C
13°C6/22°C
16°C10/23°C
14°C7/23°C
--°C/°C
36AQI
35AQI
40AQI
33AQI
2025 Days Vs Air Quality
Ypsilanti, Michigan, United States
83%
238
16%
46
1%
3
Total number of days with different AQI categories in last 288 days in 2025 (77 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 288 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Ypsilanti, Michigan, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
21AQI
21AQI
19AQI
20AQI
19AQI
19AQI
19AQI
25AQI
65AQI
49AQI
53AQI
26AQI
24AQI
26AQI
48AQI
36AQI
27AQI
20AQI
20AQI
22AQI
25AQI
31AQI
30AQI
39AQI
22AQI
24AQI
22AQI
21AQI
27AQI
39AQI
21AQI
37AQI
56AQI
21AQI
21AQI
28AQI
23AQI
38AQI
32AQI
34AQI
44AQI
43AQI
26AQI
41AQI
50AQI
32AQI
22AQI
23AQI
22AQI
22AQI
26AQI
50AQI
55AQI
47AQI
35AQI
40AQI
44AQI
26AQI
28AQI
27AQI
35AQI
35AQI
28AQI
30AQI
27AQI
32AQI
30AQI
30AQI
31AQI
28AQI
28AQI
41AQI
33AQI
18AQI
17AQI
22AQI
29AQI
19AQI
19AQI
17AQI
21AQI
20AQI
19AQI
21AQI
35AQI
49AQI
41AQI
34AQI
18AQI
19AQI
25AQI
20AQI
20AQI
20AQI
19AQI
22AQI
17AQI
29AQI
35AQI
37AQI
27AQI
34AQI
26AQI
17AQI
18AQI
30AQI
45AQI
39AQI
20AQI
19AQI
16AQI
35AQI
44AQI
37AQI
24AQI
28AQI
23AQI
32AQI
19AQI
24AQI
29AQI
16AQI
17AQI
28AQI
24AQI
24AQI
19AQI
22AQI
30AQI
20AQI
29AQI
23AQI
28AQI
30AQI
31AQI
21AQI
17AQI
18AQI
17AQI
21AQI
14AQI
12AQI
13AQI
23AQI
27AQI
26AQI
21AQI
29AQI
30AQI
30AQI
22AQI
32AQI
56AQI
64AQI
76AQI
87AQI
70AQI
88AQI
73AQI
52AQI
67AQI
75AQI
54AQI
46AQI
47AQI
45AQI
34AQI
33AQI
20AQI
35AQI
40AQI
42AQI
51AQI
53AQI
40AQI
44AQI
31AQI
23AQI
33AQI
29AQI
29AQI
39AQI
48AQI
54AQI
70AQI
56AQI
33AQI
56AQI
56AQI
47AQI
48AQI
44AQI
42AQI
69AQI
88AQI
76AQI
31AQI
24AQI
25AQI
25AQI
51AQI
31AQI
32AQI
54AQI
26AQI
47AQI
27AQI
32AQI
31AQI
40AQI
125AQI
75AQI
53AQI
78AQI
111AQI
104AQI
82AQI
74AQI
57AQI
51AQI
54AQI
52AQI
49AQI
40AQI
64AQI
73AQI
62AQI
37AQI
18AQI
22AQI
17AQI
20AQI
27AQI
32AQI
23AQI
17AQI
22AQI
25AQI
31AQI
19AQI
26AQI
36AQI
39AQI
34AQI
38AQI
31AQI
38AQI
23AQI
24AQI
25AQI
31AQI
39AQI
49AQI
48AQI
57AQI
60AQI
53AQI
46AQI
50AQI
56AQI
49AQI
23AQI
25AQI
37AQI
28AQI
28AQI
36AQI
27AQI
37AQI
39AQI
31AQI
32AQI
26AQI
29AQI
49AQI
56AQI
59AQI
44AQI
17AQI
17AQI
23AQI
33AQI
32AQI
42AQI
35AQI
53AQI
28AQI
34AQI
28AQI
27AQI
23AQI
49AQI
47AQI
47AQI
38AQI
37AQI
No. of days
202536AQI
Highest AQI recorded in
June49AQI
Lowest AQI recorded in
May23AQI
202432AQI
Highest AQI recorded in
February36AQI
Lowest AQI recorded in
May27AQI
202342AQI
Highest AQI recorded in
June85AQI
Lowest AQI recorded in
October28AQI
202238AQI
Highest AQI recorded in
January75AQI
Lowest AQI recorded in
August26AQI
202140AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
October32AQI
202039AQI
Highest AQI recorded in
July43AQI
Lowest AQI recorded in
October31AQI
Most & Least Polluted Years Over the Last 6 Years
Ypsilanti's annual 2025 AQI (36) shows an average percentage change of -5.9% (improved AQI) compared to previous years: 2020 (39), 2021 (40), 2022 (38), 2023 (42), 2024 (32).