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)
25
Good
St. Augustine, Florida
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.45 μg/m³
0
55
155
255
425
605+
27.06 ppb
0
55
71
86
201
201+
1.20 ppb
0
36
76
186
605
1005+
1.51 ppb
0
54
101
361
1250
2050+
0.32 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 26
Good
2.18μg/m³
PM2.5
5.99μg/m³
PM10
27.84ppb
O3
0.39ppb
SO2
1.57ppb
NO2
0.37ppm
CO
AQI 25
Good
2.22μg/m³
PM2.5
6.81μg/m³
PM10
26.58ppb
O3
0.39ppb
SO2
1.56ppb
NO2
0.37ppm
CO
AQI 21
Good
2.63μg/m³
PM2.5
10.51μg/m³
PM10
23.47ppb
O3
0.39ppb
SO2
1.49ppb
NO2
0.39ppm
CO
AQI 25
Good
2.12μg/m³
PM2.5
8.89μg/m³
PM10
27.50ppb
O3
0.12ppb
SO2
0.37ppb
NO2
0.10ppm
CO
AQI 26
Good
2.18μg/m³
PM2.5
5.86μg/m³
PM10
27.74ppb
O3
0.39ppb
SO2
1.56ppb
NO2
0.37ppm
CO
AQI 25
Good
2.28μg/m³
PM2.5
5.41μg/m³
PM10
26.70ppb
O3
0.39ppb
SO2
1.48ppb
NO2
0.39ppm
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 2025-09-06.
The best air quality in St. Augustine, Florida was recorded at 05:00:00 on 2025-09-06.
The real-time air quality index in St. Augustine, Florida is 25, currently categorized as Good.
The most common pollutant in St. Augustine, Florida is O3.
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 2.145 μg/m3.
The current PM10 levels in St. Augustine, Florida are 6.451 μg/m3.
The current carbon monoxide (CO) level in St. Augustine, Florida is 0.323 ppm.
The current sulfur dioxide (SO2) levels in St. Augustine, Florida are 1.202 ppb.
The current ozone (O3) levels at St. Augustine, Florida is 27.064 ppm.
The current nitrogen dioxide (NO2) levels at St. Augustine, Florida is 1.507 ppb.
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