Key Biscayne, Florida, 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
Key Biscayne, Florida, United States
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 44 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Key Biscayne, Florida, United States
7 AM4th Oct 2025
7 PM
6 AM5th Oct 2025
57AQI
18AQI
46AQI
19AQI
In the last 24 hours,
Key Biscayne's AQI reached its highest point of 57 at 1 PM during the Day, while the lowest point, 18, was recorded at 7 PM during the Day between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Key Biscayne, Florida, United States
28°C27/31°C
28°C27/31°C
29°C28/33°C
29°C27/32°C
29°C27/32°C
29°C27/33°C
28°C26/30°C
27°C26/30°C
27°C25/29°C
28°C25/31°C
28°C26/32°C
29°C27/33°C
28°C27/29°C
27°C26/27°C
27°C25/30°C
28°C26/32°C
29°C28/31°C
30°C27/32°C
28°C25/33°C
28°C25/30°C
29°C27/32°C
29°C26/33°C
30°C27/33°C
29°C27/30°C
28°C25/33°C
29°C25/33°C
28°C25/31°C
27°C25/31°C
28°C25/31°C
29°C26/31°C
--°C/°C
32AQI
26AQI
30AQI
26AQI
2025 Days Vs Air Quality
Key Biscayne, Florida, United States
88%
168
13%
24
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% 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
Key Biscayne, Florida, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
44AQI
50AQI
53AQI
43AQI
37AQI
43AQI
48AQI
49AQI
48AQI
42AQI
33AQI
44AQI
41AQI
35AQI
42AQI
43AQI
52AQI
37AQI
44AQI
46AQI
48AQI
48AQI
40AQI
44AQI
44AQI
48AQI
45AQI
52AQI
54AQI
44AQI
41AQI
43AQI
50AQI
52AQI
55AQI
47AQI
44AQI
40AQI
37AQI
46AQI
43AQI
39AQI
39AQI
33AQI
31AQI
38AQI
32AQI
30AQI
34AQI
40AQI
42AQI
42AQI
36AQI
38AQI
37AQI
43AQI
43AQI
37AQI
41AQI
44AQI
40AQI
44AQI
42AQI
37AQI
37AQI
43AQI
52AQI
46AQI
33AQI
47AQI
62AQI
52AQI
61AQI
56AQI
42AQI
38AQI
33AQI
49AQI
55AQI
41AQI
33AQI
30AQI
32AQI
32AQI
31AQI
28AQI
29AQI
30AQI
30AQI
26AQI
25AQI
32AQI
53AQI
55AQI
54AQI
52AQI
38AQI
44AQI
52AQI
49AQI
50AQI
49AQI
39AQI
37AQI
35AQI
34AQI
39AQI
34AQI
41AQI
29AQI
28AQI
33AQI
34AQI
43AQI
52AQI
45AQI
36AQI
26AQI
28AQI
39AQI
58AQI
57AQI
61AQI
61AQI
52AQI
47AQI
44AQI
44AQI
46AQI
34AQI
37AQI
42AQI
38AQI
31AQI
32AQI
28AQI
27AQI
26AQI
23AQI
24AQI
24AQI
25AQI
29AQI
28AQI
32AQI
31AQI
47AQI
46AQI
46AQI
36AQI
27AQI
39AQI
46AQI
46AQI
51AQI
47AQI
35AQI
35AQI
25AQI
24AQI
24AQI
23AQI
24AQI
31AQI
33AQI
34AQI
32AQI
27AQI
25AQI
23AQI
22AQI
26AQI
27AQI
29AQI
31AQI
23AQI
23AQI
22AQI
26AQI
26AQI
26AQI
28AQI
26AQI
21AQI
23AQI
22AQI
24AQI
25AQI
39AQI
32AQI
45AQI
44AQI
45AQI
45AQI
39AQI
41AQI
42AQI
36AQI
26AQI
40AQI
No. of days
202538AQI
Highest AQI recorded in
March45AQI
Lowest AQI recorded in
September26AQI
Most & Least Polluted Years Over the Last 1 Years
Key Biscayne's annual 2025 AQI (38) shows an average percentage change of NaN% (improved AQI) compared to previous years: .