Michigan City, Indiana, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Michigan City, Indiana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 43 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Michigan City, Indiana, United States
6 AM29th Sep 2025
6 PM
5 AM30th Sep 2025
79AQI
26AQI
60AQI
50AQI
In the last 24 hours,
Michigan City's AQI reached its highest point of 79 at 3 PM during the Day, while the lowest point, 26, was recorded at 8 AM during the Day between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Michigan City, Indiana, United States
18°C10/25°C
18°C11/25°C
19°C13/23°C
19°C13/24°C
17°C14/20°C
17°C13/20°C
16°C10/21°C
16°C12/19°C
15°C5/22°C
16°C7/23°C
19°C13/25°C
19°C14/26°C
20°C11/28°C
21°C15/29°C
22°C16/28°C
21°C14/28°C
20°C15/26°C
20°C14/26°C
19°C14/27°C
23°C15/30°C
21°C18/26°C
23°C17/30°C
22°C18/27°C
20°C17/24°C
19°C17/22°C
18°C15/23°C
20°C13/28°C
22°C15/31°C
21°C15/27°C
21°C13/29°C
--°C/°C
43AQI
43AQI
46AQI
42AQI
2025 Days Vs Air Quality
Michigan City, Indiana, United States
70%
130
30%
56
0.5%
1
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 70%
Health Risk Level:
Low
In 2025, 70% of 273 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
Michigan City, Indiana, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
46AQI
42AQI
40AQI
36AQI
17AQI
20AQI
34AQI
27AQI
36AQI
21AQI
19AQI
24AQI
17AQI
27AQI
46AQI
43AQI
55AQI
43AQI
33AQI
21AQI
21AQI
35AQI
50AQI
42AQI
35AQI
22AQI
28AQI
33AQI
53AQI
25AQI
17AQI
24AQI
28AQI
36AQI
22AQI
29AQI
30AQI
18AQI
18AQI
24AQI
36AQI
38AQI
20AQI
26AQI
33AQI
24AQI
37AQI
32AQI
40AQI
49AQI
43AQI
29AQI
26AQI
18AQI
26AQI
26AQI
15AQI
17AQI
19AQI
20AQI
24AQI
29AQI
32AQI
42AQI
44AQI
38AQI
33AQI
40AQI
57AQI
64AQI
86AQI
82AQI
81AQI
73AQI
68AQI
59AQI
68AQI
78AQI
77AQI
64AQI
50AQI
55AQI
46AQI
38AQI
30AQI
40AQI
43AQI
47AQI
57AQI
53AQI
36AQI
43AQI
36AQI
23AQI
36AQI
36AQI
34AQI
54AQI
54AQI
56AQI
70AQI
57AQI
49AQI
68AQI
55AQI
46AQI
47AQI
37AQI
55AQI
77AQI
83AQI
52AQI
28AQI
28AQI
36AQI
32AQI
60AQI
75AQI
61AQI
56AQI
37AQI
32AQI
32AQI
42AQI
45AQI
50AQI
107AQI
94AQI
73AQI
79AQI
75AQI
87AQI
88AQI
64AQI
58AQI
56AQI
53AQI
50AQI
48AQI
49AQI
66AQI
71AQI
58AQI
37AQI
35AQI
24AQI
17AQI
22AQI
33AQI
35AQI
22AQI
20AQI
30AQI
41AQI
42AQI
27AQI
30AQI
40AQI
42AQI
44AQI
50AQI
45AQI
45AQI
21AQI
27AQI
30AQI
32AQI
49AQI
54AQI
53AQI
57AQI
59AQI
55AQI
53AQI
54AQI
56AQI
56AQI
55AQI
54AQI
37AQI
44AQI
27AQI
23AQI
37AQI
41AQI
46AQI
43AQI
36AQI
31AQI
29AQI
53AQI
52AQI
49AQI
44AQI
No. of days
202543AQI
Highest AQI recorded in
June53AQI
Lowest AQI recorded in
May29AQI
Most & Least Polluted Years Over the Last 1 Years
Michigan City's annual 2025 AQI (43) shows an average percentage change of NaN% (improved AQI) compared to previous years: .