Seaford, Delaware, 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
Seaford, Delaware, United States
AQI Trends: Highest and Lowest
Same Day Analysis (18th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Oct - 19th Oct 2025
Seaford, Delaware, United States
7 AM18th Oct 2025
6 PM
6 AM19th Oct 2025
53AQI
17AQI
57AQI
22AQI
In the last 24 hours,
Seaford's AQI reached its highest point of 57 at 11 PM during the Night, while the lowest point, 17, was recorded at 4 PM during the Day between 18th Oct and 19th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Seaford, Delaware, United States
23°C18/31°C
20°C16/24°C
21°C17/25°C
20°C12/29°C
24°C17/32°C
26°C19/33°C
27°C23/34°C
25°C22/30°C
22°C19/29°C
23°C19/29°C
21°C17/29°C
23°C19/30°C
20°C14/24°C
16°C10/20°C
15°C6/25°C
17°C8/27°C
19°C10/30°C
20°C12/31°C
22°C14/31°C
20°C14/23°C
15°C9/20°C
14°C8/19°C
17°C11/23°C
17°C15/19°C
15°C14/15°C
15°C13/17°C
17°C13/25°C
13°C8/20°C
12°C5/20°C
14°C6/24°C
--°C/°C
34AQI
29AQI
36AQI
30AQI
2025 Days Vs Air Quality
Seaford, Delaware, United States
94%
273
6%
18
Total number of days with different AQI categories in last 292 days in 2025 (73 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 292 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Seaford, Delaware, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
21AQI
24AQI
22AQI
25AQI
28AQI
23AQI
26AQI
26AQI
30AQI
36AQI
56AQI
42AQI
27AQI
25AQI
31AQI
43AQI
29AQI
47AQI
25AQI
26AQI
33AQI
49AQI
53AQI
53AQI
37AQI
44AQI
28AQI
26AQI
27AQI
29AQI
26AQI
25AQI
27AQI
34AQI
23AQI
29AQI
32AQI
26AQI
27AQI
33AQI
35AQI
26AQI
23AQI
28AQI
28AQI
26AQI
28AQI
28AQI
26AQI
26AQI
25AQI
31AQI
34AQI
35AQI
39AQI
41AQI
44AQI
26AQI
30AQI
28AQI
31AQI
33AQI
30AQI
23AQI
30AQI
28AQI
29AQI
29AQI
35AQI
30AQI
43AQI
40AQI
26AQI
26AQI
19AQI
18AQI
24AQI
28AQI
17AQI
19AQI
19AQI
37AQI
33AQI
20AQI
19AQI
29AQI
49AQI
30AQI
25AQI
18AQI
20AQI
28AQI
28AQI
35AQI
30AQI
18AQI
31AQI
18AQI
22AQI
22AQI
14AQI
18AQI
30AQI
34AQI
15AQI
20AQI
27AQI
39AQI
38AQI
21AQI
33AQI
27AQI
31AQI
25AQI
30AQI
13AQI
16AQI
22AQI
32AQI
38AQI
39AQI
37AQI
23AQI
22AQI
22AQI
21AQI
25AQI
22AQI
18AQI
24AQI
26AQI
20AQI
31AQI
26AQI
40AQI
30AQI
17AQI
20AQI
17AQI
16AQI
15AQI
16AQI
14AQI
15AQI
18AQI
19AQI
14AQI
19AQI
25AQI
29AQI
19AQI
22AQI
24AQI
33AQI
35AQI
31AQI
26AQI
26AQI
24AQI
35AQI
48AQI
58AQI
57AQI
45AQI
37AQI
28AQI
22AQI
23AQI
23AQI
22AQI
35AQI
37AQI
51AQI
56AQI
57AQI
51AQI
43AQI
30AQI
45AQI
39AQI
37AQI
23AQI
32AQI
47AQI
59AQI
49AQI
33AQI
34AQI
29AQI
25AQI
27AQI
27AQI
25AQI
22AQI
19AQI
25AQI
26AQI
29AQI
26AQI
20AQI
26AQI
50AQI
49AQI
30AQI
32AQI
37AQI
55AQI
27AQI
43AQI
45AQI
42AQI
32AQI
45AQI
37AQI
47AQI
60AQI
67AQI
52AQI
31AQI
26AQI
25AQI
29AQI
24AQI
27AQI
26AQI
35AQI
42AQI
52AQI
36AQI
17AQI
23AQI
19AQI
25AQI
30AQI
26AQI
27AQI
22AQI
21AQI
27AQI
27AQI
20AQI
22AQI
21AQI
19AQI
22AQI
25AQI
37AQI
43AQI
39AQI
26AQI
23AQI
20AQI
24AQI
28AQI
39AQI
39AQI
35AQI
30AQI
20AQI
19AQI
25AQI
35AQI
26AQI
19AQI
23AQI
27AQI
22AQI
33AQI
19AQI
19AQI
36AQI
33AQI
47AQI
44AQI
44AQI
51AQI
51AQI
55AQI
40AQI
24AQI
42AQI
40AQI
44AQI
37AQI
27AQI
20AQI
30AQI
23AQI
24AQI
45AQI
33AQI
30AQI
28AQI
25AQI
23AQI
36AQI
34AQI
32AQI
28AQI
38AQI
No. of days
202530AQI
Highest AQI recorded in
October38AQI
Lowest AQI recorded in
May23AQI
202431AQI
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
November24AQI
202342AQI
Highest AQI recorded in
June69AQI
Lowest AQI recorded in
December33AQI
202234AQI
Highest AQI recorded in
February38AQI
Lowest AQI recorded in
October28AQI
202137AQI
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
October29AQI
202034AQI
Highest AQI recorded in
November40AQI
Lowest AQI recorded in
September27AQI
Most & Least Polluted Years Over the Last 6 Years
Seaford's annual 2025 AQI (30) shows an average percentage change of -13.6% (improved AQI) compared to previous years: 2020 (34), 2021 (37), 2022 (34), 2023 (42), 2024 (31).