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
7.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.00 μg/m³
0
55
155
255
425
605+
26.28 ppb
0
55
71
86
201
201+
0.16 ppb
0
36
76
186
605
1005+
0.13 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 49
Good
8.94μg/m³
PM2.5
21.86μg/m³
PM10
20.74ppb
O3
0.31ppb
SO2
10.41ppb
NO2
0.46ppm
CO
AQI 49
Good
9.33μg/m³
PM2.5
22.42μg/m³
PM10
22.90ppb
O3
0.40ppb
SO2
11.09ppb
NO2
0.39ppm
CO
AQI 56
Moderate
11.64μg/m³
PM2.5
39.07μg/m³
PM10
21.69ppb
O3
0.29ppb
SO2
9.86ppb
NO2
0.48ppm
CO
AQI 56
Moderate
11.70μg/m³
PM2.5
39.00μg/m³
PM10
21.68ppb
O3
0.29ppb
SO2
9.87ppb
NO2
0.48ppm
CO
AQI 56
Moderate
11.51μg/m³
PM2.5
39.21μg/m³
PM10
21.71ppb
O3
0.28ppb
SO2
9.83ppb
NO2
0.48ppm
CO
AQI 54
Moderate
11.10μg/m³
PM2.5
39.65μg/m³
PM10
21.77ppb
O3
0.28ppb
SO2
9.74ppb
NO2
0.49ppm
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 04:00:00 on 2025-07-30.
In the last 24 hrs, the best air quality in Key West, Florida was observed at 08:00:00 on 2025-07-29.
The current air quality in Key West, Florida is 38, categorized as Good based on real-time data.
The most common pollutant in Key West, Florida is PM2.5.
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 7.158 μg/m3.
The current PM10 concentration at Key West, Florida is 31.998 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 0.158 ppb.
The current ozone (O3) concentration at Key West, Florida is 26.382 ppm.
The current nitrogen dioxide (NO2) concentration at Key West, Florida is 0.153 ppb.
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