Tecumseh, 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
Tecumseh, Michigan, United States
AQI Trends: Highest and Lowest
Same Day Analysis (5th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 64 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Oct - 6th Oct 2025
Tecumseh, Michigan, United States
7 AM5th Oct 2025
7 PM
6 AM6th Oct 2025
70AQI
48AQI
48AQI
42AQI
In the last 24 hours,
Tecumseh's AQI reached its highest point of 70 at 7 AM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 5th Oct and 6th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Tecumseh, Michigan, United States
14°C7/21°C
13°C2/21°C
13°C3/22°C
16°C6/27°C
17°C9/27°C
18°C8/28°C
19°C10/29°C
18°C11/26°C
20°C13/30°C
20°C12/31°C
20°C11/30°C
20°C10/31°C
22°C12/32°C
21°C15/30°C
19°C13/26°C
21°C15/30°C
21°C17/28°C
19°C16/25°C
19°C17/24°C
19°C16/23°C
19°C12/28°C
21°C12/32°C
21°C13/31°C
20°C12/30°C
19°C11/29°C
18°C12/25°C
17°C8/28°C
19°C9/32°C
22°C12/33°C
22°C13/32°C
--°C/°C
40AQI
38AQI
39AQI
39AQI
2025 Days Vs Air Quality
Tecumseh, Michigan, United States
81%
225
19%
52
0.3%
1
Total number of days with different AQI categories in last 279 days in 2025 (86 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2025, 81% of 279 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
Tecumseh, Michigan, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI
22AQI
22AQI
18AQI
22AQI
19AQI
19AQI
19AQI
29AQI
68AQI
51AQI
55AQI
28AQI
25AQI
31AQI
49AQI
43AQI
27AQI
19AQI
20AQI
22AQI
27AQI
32AQI
34AQI
40AQI
22AQI
23AQI
22AQI
22AQI
31AQI
35AQI
20AQI
37AQI
53AQI
21AQI
21AQI
29AQI
23AQI
41AQI
34AQI
33AQI
43AQI
46AQI
29AQI
43AQI
47AQI
31AQI
21AQI
24AQI
22AQI
24AQI
28AQI
51AQI
53AQI
46AQI
34AQI
42AQI
43AQI
26AQI
24AQI
25AQI
35AQI
33AQI
27AQI
25AQI
26AQI
29AQI
26AQI
28AQI
29AQI
29AQI
26AQI
39AQI
33AQI
18AQI
16AQI
21AQI
30AQI
19AQI
21AQI
18AQI
22AQI
22AQI
19AQI
21AQI
38AQI
48AQI
45AQI
37AQI
18AQI
18AQI
26AQI
20AQI
20AQI
20AQI
17AQI
25AQI
23AQI
28AQI
34AQI
39AQI
28AQI
31AQI
29AQI
18AQI
17AQI
30AQI
49AQI
40AQI
21AQI
20AQI
16AQI
36AQI
44AQI
41AQI
22AQI
24AQI
22AQI
36AQI
19AQI
27AQI
37AQI
19AQI
18AQI
25AQI
23AQI
23AQI
21AQI
21AQI
32AQI
22AQI
28AQI
30AQI
30AQI
38AQI
35AQI
22AQI
18AQI
18AQI
18AQI
22AQI
13AQI
11AQI
12AQI
25AQI
30AQI
25AQI
22AQI
35AQI
34AQI
33AQI
24AQI
33AQI
58AQI
62AQI
65AQI
81AQI
75AQI
82AQI
68AQI
54AQI
68AQI
76AQI
59AQI
52AQI
49AQI
47AQI
35AQI
37AQI
21AQI
36AQI
43AQI
46AQI
53AQI
53AQI
38AQI
47AQI
35AQI
26AQI
32AQI
32AQI
31AQI
42AQI
48AQI
54AQI
70AQI
57AQI
33AQI
54AQI
58AQI
44AQI
45AQI
42AQI
39AQI
68AQI
86AQI
76AQI
30AQI
22AQI
25AQI
25AQI
50AQI
36AQI
35AQI
55AQI
29AQI
33AQI
27AQI
30AQI
27AQI
41AQI
108AQI
79AQI
55AQI
76AQI
91AQI
98AQI
78AQI
73AQI
58AQI
51AQI
52AQI
51AQI
47AQI
39AQI
63AQI
71AQI
60AQI
41AQI
22AQI
21AQI
17AQI
20AQI
27AQI
32AQI
23AQI
16AQI
21AQI
26AQI
33AQI
22AQI
24AQI
33AQI
37AQI
33AQI
35AQI
32AQI
39AQI
23AQI
22AQI
23AQI
27AQI
37AQI
44AQI
49AQI
55AQI
56AQI
53AQI
45AQI
52AQI
53AQI
52AQI
26AQI
27AQI
37AQI
31AQI
32AQI
34AQI
28AQI
38AQI
41AQI
28AQI
26AQI
27AQI
28AQI
51AQI
58AQI
64AQI
30AQI
34AQI
27AQI
27AQI
25AQI
50AQI
46AQI
46AQI
37AQI
46AQI
No. of days
202536AQI
Highest AQI recorded in
June50AQI
Lowest AQI recorded in
May25AQI
202432AQI
Highest AQI recorded in
February38AQI
Lowest AQI recorded in
April13AQI
202344AQI
Highest AQI recorded in
June93AQI
Lowest AQI recorded in
October28AQI
202239AQI
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
August28AQI
202138AQI
Highest AQI recorded in
August47AQI
Lowest AQI recorded in
October32AQI
202037AQI
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
October30AQI
Most & Least Polluted Years Over the Last 6 Years
Tecumseh's annual 2025 AQI (36) shows an average percentage change of -4.7% (improved AQI) compared to previous years: 2020 (37), 2021 (38), 2022 (39), 2023 (44), 2024 (32).