Stay updated with real-time air quality in St. Augustine, 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
St. Augustine, Florida
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.43 μg/m³
0
55
155
255
425
605+
14.75 ppb
0
55
71
86
201
201+
1.18 ppb
0
36
76
186
605
1005+
4.79 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
St. Augustine, Florida
St. Augustine, Florida
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AQI 38
Good
6.53μg/m³
PM2.5
26.23μg/m³
PM10
19.64ppb
O3
0.87ppb
SO2
6.53ppb
NO2
0.28ppm
CO
AQI 38
Good
6.71μg/m³
PM2.5
26.40μg/m³
PM10
18.18ppb
O3
0.95ppb
SO2
6.43ppb
NO2
0.27ppm
CO
AQI 38
Good
7.43μg/m³
PM2.5
30.93μg/m³
PM10
20.80ppb
O3
1.15ppb
SO2
6.32ppb
NO2
0.24ppm
CO
AQI 33
Good
5.64μg/m³
PM2.5
20.16μg/m³
PM10
18.57ppb
O3
0.76ppb
SO2
6.54ppb
NO2
0.34ppm
CO
AQI 38
Good
6.86μg/m³
PM2.5
26.00μg/m³
PM10
21.40ppb
O3
0.88ppb
SO2
7.08ppb
NO2
0.28ppm
CO
AQI 38
Good
6.55μg/m³
PM2.5
17.36μg/m³
PM10
21.11ppb
O3
1.05ppb
SO2
7.05ppb
NO2
0.24ppm
CO
Air quality measurements for Florida, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for St. Augustine, Florida is updated on an hourly basis.
The worst air quality in St. Augustine, Florida was recorded at 01:00:00 on 2025-07-17.
The best air quality in St. Augustine, Florida was recorded at 08:00:00 on 2025-07-16.
The real-time air quality index in St. Augustine, Florida is 33, currently categorized as Good.
The most common pollutant in St. Augustine, Florida is PM2.5.
If the air quality in St. Augustine, Florida is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in St. Augustine, Florida at present are 5.708 μg/m3.
The current PM10 levels in St. Augustine, Florida are 20.625 μg/m3.
The current carbon monoxide (CO) level in St. Augustine, Florida is 0.286 ppm.
The current sulfur dioxide (SO2) levels in St. Augustine, Florida are 0.927 ppb.
The current ozone (O3) levels at St. Augustine, Florida is 13.564 ppm.
The current nitrogen dioxide (NO2) levels at St. Augustine, Florida is 5.864 ppb.
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