Hammond, Indiana, 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
Hammond, Indiana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 58 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Hammond, Indiana, United States
6 AM4th Oct 2025
6 PM
5 AM5th Oct 2025
64AQI
56AQI
65AQI
57AQI
In the last 24 hours,
Hammond's AQI reached its highest point of 65 at 10 PM during the Night, while the lowest point, 56, was recorded at 6 PM during the Day between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Hammond, Indiana, United States
17°C13/23°C
15°C8/22°C
15°C8/22°C
15°C6/24°C
17°C8/25°C
21°C13/29°C
21°C16/28°C
21°C13/31°C
23°C16/33°C
23°C17/30°C
22°C16/29°C
22°C16/29°C
21°C16/29°C
22°C15/31°C
24°C17/33°C
24°C19/28°C
24°C18/31°C
22°C18/28°C
21°C17/30°C
20°C16/22°C
18°C15/24°C
20°C12/30°C
23°C15/33°C
21°C14/28°C
22°C14/32°C
21°C13/30°C
20°C13/29°C
21°C12/30°C
24°C16/33°C
25°C18/33°C
--°C/°C
44AQI
44AQI
48AQI
44AQI
2025 Days Vs Air Quality
Hammond, Indiana, United States
77%
214
22%
60
1%
3
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 77%
Health Risk Level:
Low
In 2025, 77% of 278 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
Hammond, Indiana, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
23AQI
29AQI
23AQI
22AQI
18AQI
24AQI
29AQI
41AQI
68AQI
46AQI
43AQI
21AQI
29AQI
40AQI
42AQI
29AQI
22AQI
19AQI
20AQI
23AQI
27AQI
32AQI
37AQI
28AQI
22AQI
21AQI
23AQI
22AQI
32AQI
41AQI
19AQI
42AQI
46AQI
20AQI
28AQI
29AQI
24AQI
34AQI
35AQI
29AQI
30AQI
51AQI
35AQI
42AQI
43AQI
30AQI
22AQI
25AQI
24AQI
27AQI
36AQI
36AQI
50AQI
39AQI
44AQI
41AQI
44AQI
25AQI
22AQI
30AQI
31AQI
30AQI
25AQI
22AQI
29AQI
31AQI
24AQI
26AQI
28AQI
24AQI
46AQI
45AQI
77AQI
24AQI
26AQI
25AQI
37AQI
21AQI
24AQI
21AQI
24AQI
21AQI
33AQI
45AQI
45AQI
40AQI
37AQI
33AQI
21AQI
25AQI
36AQI
28AQI
44AQI
27AQI
23AQI
24AQI
20AQI
29AQI
51AQI
46AQI
56AQI
39AQI
33AQI
20AQI
24AQI
37AQI
51AQI
49AQI
38AQI
20AQI
29AQI
30AQI
52AQI
25AQI
19AQI
29AQI
31AQI
36AQI
31AQI
30AQI
33AQI
21AQI
20AQI
30AQI
41AQI
41AQI
23AQI
28AQI
35AQI
29AQI
44AQI
33AQI
41AQI
48AQI
38AQI
22AQI
23AQI
25AQI
28AQI
30AQI
16AQI
25AQI
19AQI
20AQI
24AQI
31AQI
34AQI
43AQI
45AQI
39AQI
37AQI
39AQI
57AQI
65AQI
106AQI
82AQI
84AQI
75AQI
70AQI
61AQI
69AQI
80AQI
78AQI
68AQI
52AQI
55AQI
43AQI
36AQI
29AQI
42AQI
40AQI
44AQI
56AQI
52AQI
37AQI
42AQI
37AQI
26AQI
35AQI
34AQI
33AQI
54AQI
54AQI
55AQI
69AQI
55AQI
50AQI
70AQI
53AQI
47AQI
42AQI
31AQI
54AQI
75AQI
81AQI
49AQI
28AQI
30AQI
33AQI
27AQI
59AQI
74AQI
61AQI
55AQI
36AQI
34AQI
30AQI
41AQI
47AQI
46AQI
109AQI
102AQI
78AQI
79AQI
73AQI
83AQI
92AQI
64AQI
59AQI
57AQI
53AQI
48AQI
46AQI
49AQI
66AQI
72AQI
58AQI
36AQI
33AQI
25AQI
18AQI
22AQI
32AQI
34AQI
23AQI
19AQI
29AQI
35AQI
36AQI
19AQI
25AQI
36AQI
39AQI
41AQI
48AQI
47AQI
46AQI
21AQI
31AQI
30AQI
31AQI
49AQI
54AQI
50AQI
56AQI
59AQI
54AQI
53AQI
52AQI
56AQI
56AQI
57AQI
54AQI
36AQI
41AQI
23AQI
22AQI
35AQI
35AQI
46AQI
42AQI
46AQI
45AQI
41AQI
58AQI
58AQI
30AQI
34AQI
31AQI
33AQI
31AQI
54AQI
51AQI
48AQI
44AQI
51AQI
No. of days
202540AQI
Highest AQI recorded in
June54AQI
Lowest AQI recorded in
January30AQI
202431AQI
Highest AQI recorded in
August38AQI
Lowest AQI recorded in
April24AQI
202341AQI
Highest AQI recorded in
June74AQI
Lowest AQI recorded in
October29AQI
202236AQI
Highest AQI recorded in
December41AQI
Lowest AQI recorded in
March19AQI
202139AQI
Highest AQI recorded in
July51AQI
Lowest AQI recorded in
October29AQI
202036AQI
Highest AQI recorded in
December46AQI
Lowest AQI recorded in
September29AQI
Most & Least Polluted Years Over the Last 6 Years
Hammond's annual 2025 AQI (40) shows an average percentage change of 10.1% (worsened AQI) compared to previous years: 2020 (36), 2021 (39), 2022 (36), 2023 (41), 2024 (31).