Sherwood Island Con, Westport, Connecticut, 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
Sherwood Island Con, Westport, Connecticut, United States
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 13 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
Sherwood Island Con, Westport, Connecticut, United States
6 AM3rd Oct 2025
6 PM
5 AM4th Oct 2025
47AQI
17AQI
52AQI
32AQI
In the last 24 hours,
Sherwood Island Con's AQI reached its highest point of 52 at 3 AM during the Night, while the lowest point, 17, was recorded at 1 PM during the Day between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Sherwood Island Con, Westport, Connecticut, United States
21°C16/27°C
24°C18/30°C
24°C21/30°C
20°C16/23°C
17°C10/22°C
17°C11/23°C
17°C15/19°C
20°C11/26°C
20°C15/26°C
20°C16/24°C
22°C18/27°C
20°C15/24°C
19°C15/23°C
18°C14/21°C
22°C17/29°C
22°C16/29°C
18°C14/21°C
17°C10/22°C
16°C9/22°C
22°C15/31°C
22°C18/28°C
22°C20/24°C
23°C18/30°C
22°C16/28°C
23°C18/30°C
21°C16/28°C
21°C13/31°C
17°C12/23°C
14°C9/19°C
15°C7/23°C
--°C/°C
31AQI
28AQI
33AQI
29AQI
2025 Days Vs Air Quality
Sherwood Island Con, Westport, Connecticut, United States
84%
159
16%
31
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 277 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
Sherwood Island Con, Westport, Connecticut, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
30AQI
50AQI
27AQI
43AQI
18AQI
19AQI
44AQI
29AQI
18AQI
17AQI
17AQI
18AQI
17AQI
25AQI
22AQI
14AQI
16AQI
23AQI
40AQI
12AQI
16AQI
28AQI
57AQI
21AQI
19AQI
42AQI
23AQI
47AQI
40AQI
36AQI
11AQI
18AQI
29AQI
26AQI
18AQI
46AQI
51AQI
35AQI
23AQI
25AQI
27AQI
26AQI
22AQI
15AQI
27AQI
26AQI
33AQI
29AQI
28AQI
40AQI
42AQI
23AQI
18AQI
18AQI
19AQI
14AQI
14AQI
13AQI
14AQI
21AQI
32AQI
25AQI
20AQI
40AQI
20AQI
16AQI
18AQI
26AQI
40AQI
60AQI
59AQI
41AQI
56AQI
60AQI
33AQI
47AQI
63AQI
65AQI
59AQI
42AQI
34AQI
29AQI
25AQI
36AQI
29AQI
52AQI
53AQI
57AQI
59AQI
49AQI
40AQI
27AQI
31AQI
46AQI
41AQI
44AQI
35AQI
47AQI
44AQI
71AQI
59AQI
40AQI
42AQI
33AQI
38AQI
34AQI
27AQI
20AQI
23AQI
24AQI
38AQI
36AQI
18AQI
21AQI
23AQI
33AQI
26AQI
28AQI
30AQI
46AQI
61AQI
81AQI
56AQI
59AQI
55AQI
62AQI
49AQI
46AQI
56AQI
63AQI
89AQI
64AQI
49AQI
34AQI
38AQI
39AQI
55AQI
52AQI
39AQI
38AQI
58AQI
54AQI
54AQI
27AQI
17AQI
19AQI
15AQI
26AQI
37AQI
26AQI
29AQI
18AQI
17AQI
26AQI
26AQI
17AQI
22AQI
29AQI
27AQI
28AQI
25AQI
42AQI
51AQI
41AQI
24AQI
24AQI
22AQI
28AQI
37AQI
39AQI
38AQI
44AQI
32AQI
22AQI
25AQI
35AQI
19AQI
25AQI
23AQI
33AQI
42AQI
27AQI
23AQI
22AQI
28AQI
30AQI
25AQI
15AQI
13AQI
34AQI
25AQI
26AQI
43AQI
40AQI
39AQI
30AQI
14AQI
No. of days
202534AQI
Highest AQI recorded in
June43AQI
Lowest AQI recorded in
October14AQI
Most & Least Polluted Years Over the Last 1 Years
Sherwood Island Con's annual 2025 AQI (34) shows an average percentage change of NaN% (improved AQI) compared to previous years: .