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!
September Air Quality Analysis
Key Biscayne, Florida, United States
AQI Trends: Highest and Lowest
Same Day Analysis (28th September):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 36 of Good air quality on the same day.
Day & Night AQI Trend: 28th Sep - 29th Sep 2026
Key Biscayne, Florida, United States
7 AM28th Sep 2026
7 PM
6 AM29th Sep 2026
51AQI
25AQI
46AQI
32AQI
In the last 24 hours,
Key Biscayne's AQI reached its highest point of 51 at 8 AM during the Day, while the lowest point, 25, was recorded at 7 AM during the Day between 28th Sep and 29th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Key Biscayne, Florida, United States
30°C26/32°C
29°C26/30°C
29°C27/33°C
30°C26/33°C
29°C26/33°C
30°C27/33°C
28°C26/33°C
29°C27/33°C
28°C26/30°C
30°C29/33°C
30°C29/33°C
29°C26/33°C
30°C26/33°C
29°C27/33°C
30°C28/32°C
30°C29/32°C
30°C29/31°C
29°C28/31°C
30°C28/31°C
29°C27/31°C
29°C28/31°C
28°C25/30°C
29°C28/30°C
27°C26/29°C
29°C27/32°C
29°C26/32°C
28°C26/31°C
28°C27/30°C
28°C26/30°C
27°C25/28°C
37AQI
30AQI
36AQI
27AQI
2026 Days Vs Air Quality
Key Biscayne, Florida, United States
96%
256
4%
12
Total number of days with different AQI categories in last 272 days in 2026 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2026, 96% of 272 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
Key Biscayne, Florida, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
44AQI (US)
46AQI (US)
34AQI (US)
19AQI (US)
25AQI (US)
24AQI (US)
25AQI (US)
23AQI (US)
18AQI (US)
17AQI (US)
24AQI (US)
31AQI (US)
21AQI (US)
18AQI (US)
21AQI (US)
19AQI (US)
23AQI (US)
42AQI (US)
20AQI (US)
19AQI (US)
23AQI (US)
47AQI (US)
45AQI (US)
42AQI (US)
34AQI (US)
20AQI (US)
22AQI (US)
32AQI (US)
26AQI (US)
38AQI (US)
27AQI (US)
27AQI (US)
38AQI (US)
29AQI (US)
28AQI (US)
29AQI (US)
26AQI (US)
24AQI (US)
22AQI (US)
27AQI (US)
26AQI (US)
22AQI (US)
23AQI (US)
28AQI (US)
26AQI (US)
31AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
29AQI (US)
26AQI (US)
22AQI (US)
30AQI (US)
35AQI (US)
25AQI (US)
28AQI (US)
21AQI (US)
18AQI (US)
25AQI (US)
27AQI (US)
29AQI (US)
18AQI (US)
20AQI (US)
21AQI (US)
19AQI (US)
22AQI (US)
21AQI (US)
16AQI (US)
17AQI (US)
21AQI (US)
19AQI (US)
17AQI (US)
17AQI (US)
18AQI (US)
20AQI (US)
31AQI (US)
29AQI (US)
20AQI (US)
20AQI (US)
16AQI (US)
13AQI (US)
15AQI (US)
19AQI (US)
18AQI (US)
15AQI (US)
13AQI (US)
13AQI (US)
12AQI (US)
17AQI (US)
19AQI (US)
21AQI (US)
18AQI (US)
20AQI (US)
26AQI (US)
30AQI (US)
27AQI (US)
31AQI (US)
26AQI (US)
17AQI (US)
23AQI (US)
25AQI (US)
22AQI (US)
22AQI (US)
23AQI (US)
22AQI (US)
21AQI (US)
30AQI (US)
32AQI (US)
14AQI (US)
19AQI (US)
15AQI (US)
14AQI (US)
13AQI (US)
17AQI (US)
15AQI (US)
15AQI (US)
14AQI (US)
14AQI (US)
14AQI (US)
17AQI (US)
22AQI (US)
24AQI (US)
22AQI (US)
26AQI (US)
20AQI (US)
20AQI (US)
20AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
22AQI (US)
32AQI (US)
41AQI (US)
41AQI (US)
48AQI (US)
45AQI (US)
43AQI (US)
45AQI (US)
51AQI (US)
46AQI (US)
43AQI (US)
45AQI (US)
25AQI (US)
26AQI (US)
15AQI (US)
12AQI (US)
20AQI (US)
17AQI (US)
20AQI (US)
21AQI (US)
14AQI (US)
15AQI (US)
12AQI (US)
11AQI (US)
14AQI (US)
16AQI (US)
16AQI (US)
16AQI (US)
16AQI (US)
13AQI (US)
13AQI (US)
14AQI (US)
18AQI (US)
20AQI (US)
28AQI (US)
23AQI (US)
18AQI (US)
15AQI (US)
13AQI (US)
16AQI (US)
29AQI (US)
28AQI (US)
21AQI (US)
24AQI (US)
35AQI (US)
26AQI (US)
18AQI (US)
17AQI (US)
16AQI (US)
12AQI (US)
14AQI (US)
24AQI (US)
60AQI (US)
13AQI (US)
25AQI (US)
51AQI (US)
51AQI (US)
40AQI (US)
20AQI (US)
40AQI (US)
36AQI (US)
28AQI (US)
33AQI (US)
35AQI (US)
49AQI (US)
53AQI (US)
45AQI (US)
53AQI (US)
41AQI (US)
34AQI (US)
43AQI (US)
39AQI (US)
39AQI (US)
36AQI (US)
35AQI (US)
37AQI (US)
36AQI (US)
37AQI (US)
43AQI (US)
41AQI (US)
49AQI (US)
45AQI (US)
41AQI (US)
40AQI (US)
40AQI (US)
31AQI (US)
29AQI (US)
35AQI (US)
37AQI (US)
30AQI (US)
35AQI (US)
34AQI (US)
54AQI (US)
61AQI (US)
76AQI (US)
73AQI (US)
50AQI (US)
35AQI (US)
47AQI (US)
42AQI (US)
40AQI (US)
49AQI (US)
52AQI (US)
42AQI (US)
32AQI (US)
34AQI (US)
34AQI (US)
31AQI (US)
29AQI (US)
21AQI (US)
27AQI (US)
25AQI (US)
27AQI (US)
30AQI (US)
26AQI (US)
28AQI (US)
26AQI (US)
28AQI (US)
28AQI (US)
25AQI (US)
39AQI (US)
36AQI (US)
28AQI (US)
39AQI (US)
52AQI (US)
44AQI (US)
28AQI (US)
33AQI (US)
30AQI (US)
30AQI (US)
34AQI (US)
33AQI (US)
31AQI (US)
27AQI (US)
26AQI (US)
29AQI (US)
40AQI (US)
36AQI (US)
28AQI (US)
27AQI (US)
19AQI (US)
21AQI (US)
29AQI (US)
19AQI (US)
36AQI (US)
42AQI (US)
32AQI (US)
No. of days
202628AQI (US)
Highest AQI (US) recorded in
August42AQI (US)
Lowest AQI (US) recorded in
June19AQI (US)
202537AQI (US)
Highest AQI (US) recorded in
March45AQI (US)
Lowest AQI (US) recorded in
September26AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Key Biscayne's annual 2026 AQI (US) (28) shows an average percentage change of -24.3% (improved AQI (US)) compared to previous years: 2025 (37).