Stay updated with real-time air quality in Key West, Florida featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
38
Good
Key West, Florida
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.00 μg/m³
0
55
155
255
425
605+
28.42 ppb
0
55
71
86
201
201+
0.13 ppb
0
36
76
186
605
1005+
0.11 ppb
0
54
101
361
1250
2050+
0.09 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Key West, Florida
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AQI 38
Good
6.85μg/m³
PM2.5
22.21μg/m³
PM10
19.36ppb
O3
0.73ppb
SO2
8.04ppb
NO2
0.44ppm
CO
AQI 49
Good
8.73μg/m³
PM2.5
33.30μg/m³
PM10
17.35ppb
O3
0.85ppb
SO2
8.23ppb
NO2
0.39ppm
CO
AQI 52
Moderate
9.99μg/m³
PM2.5
25.05μg/m³
PM10
18.23ppb
O3
0.67ppb
SO2
6.29ppb
NO2
0.45ppm
CO
AQI 52
Moderate
10.10μg/m³
PM2.5
25.00μg/m³
PM10
18.28ppb
O3
0.67ppb
SO2
6.23ppb
NO2
0.44ppm
CO
AQI 52
Moderate
9.77μg/m³
PM2.5
25.16μg/m³
PM10
18.14ppb
O3
0.66ppb
SO2
6.40ppb
NO2
0.45ppm
CO
AQI 49
Good
9.08μg/m³
PM2.5
25.49μg/m³
PM10
17.84ppb
O3
0.65ppb
SO2
6.74ppb
NO2
0.45ppm
CO
Air quality data and pollutant measurements for Florida, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Key West, Florida is updated every hour.
The worst air quality in Key West, Florida in the last 24 hours was observed at 10:00:00 on 2025-07-09.
In the last 24 hrs, the best air quality in Key West, Florida was observed at 10:00:00 on 2025-07-10.
The current air quality in Key West, Florida is 25, categorized as Good based on real-time data.
The most common pollutant in Key West, Florida is O3.
If the air quality in Key West, Florida is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Key West, Florida is 2.185 μg/m3.
The current PM10 concentration at Key West, Florida is 8.999 μg/m3.
The current carbon monoxide (CO) concentration at Key West, Florida is 0.087 ppm.
The current sulfur dioxide (SO2) concentration at Key West, Florida is 0.096 ppb.
The current ozone (O3) concentration at Key West, Florida is 27.38 ppm.
The current nitrogen dioxide (NO2) concentration at Key West, Florida is 0.271 ppb.
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