AIR QUALITY FL

Air Quality in Saint Augustine, FL: Moderate (57 AQI)

AQI 57 · Moderate · PM10 · Updated 2026-05-03

Saint Augustine's air quality is moderate. Unusually sensitive people should consider reducing prolonged outdoor exertion.

Data: EPA AirNow, FEMA National Risk Index Last verified: 2026-05-03

Average AQI

Moderate

AQI Category

Unhealthy Days

Wildfire Risk

Mold Score

ZIP Codes

What is AQI?

The Air Quality Index (AQI) is a standardized scale from 0 to 500 that measures air pollution levels. 0-50 is "Good," 51-100 is "Moderate," 101-150 is "Unhealthy for Sensitive Groups," and above 150 is "Unhealthy" for everyone. AQI tracks five major pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. Saint Augustine's average AQI of 57 falls in the "Moderate" range.

How do wildfires affect air quality?

Wildfire smoke contains fine particulate matter (PM2.5) that can travel hundreds of miles and dramatically spike AQI readings. During fire season, even cities far from active fires can experience unhealthy air. HEPA air purifiers (rated for PM2.5) are the most effective indoor protection. Check AirNow.gov for real-time conditions during fire season.

Air Quality by ZIP Code in Saint Augustine

AQI varies across Saint Augustine's 6 ZIP codes based on proximity to pollution sources and local geography.

ZIP Code	AQI	Category	Wildfire	Mold
32095	64	Moderate	23	50	View report →
32085	55	Moderate	24	52	View report →
32086	55	Moderate	24	58	View report →
32092	55	Moderate	24	53	View report →

Air Quality Overview

Saint Augustine, Florida has moderate air quality with an average AQI of 57. Air quality is acceptable, though some pollutants may be a concern for a small number of people who are unusually sensitive to air pollution. The dominant pollutant is PM10.

The Air Quality Index (AQI) is an EPA-standardized scale from 0 to 500. Values below 50 are "Good," 51-100 "Moderate," 101-150 "Unhealthy for Sensitive Groups," 151-200 "Unhealthy," 201-300 "Very Unhealthy," and above 300 "Hazardous."

Dominant Pollutant: PM10

PM10 is one of six criteria pollutants monitored by the EPA under the Clean Air Act. Elevated levels can cause respiratory irritation and may aggravate existing health conditions.

Air Quality by ZIP Code in Saint Augustine

AQI varies across Saint Augustine's 6 ZIP codes based on proximity to pollution sources, traffic patterns, and local geography:

ZIP Code	AQI	Category	Wildfire Risk	Mold Score
32095	64	Moderate	23	50
32085	55	Moderate	24	52
32086	55	Moderate	24	58
32092	55	Moderate	24	53

Wildfire Smoke Risk

Saint Augustine has an elevated wildfire smoke risk with an average smoke risk score of 24 (scale 0-100). There have been 124 fires recorded within 100 km of city ZIP codes.

Metric	Value
Avg. smoke risk score	24
Max smoke risk score	24
Fires within 100 km	124
High-risk ZIP codes	0

Wildfire smoke contains PM2.5, carbon monoxide, and volatile organic compounds. Even short-term exposure can trigger asthma attacks and respiratory distress.

Indoor Mold Risk

Saint Augustine has an average mold risk score of 57 out of 100, with 3 ZIP codes in the high-risk category.

Factor	Value
Mold risk score	57/100
Average humidity	78% RH
High-risk ZIPs	3
Peak season	summer high

Mold risk is influenced by humidity levels, housing age (older homes have more moisture issues), flood history, and water infrastructure quality. Indoor humidity above 60% creates favorable conditions for mold growth.

Signs of mold problems: musty odors, visible growth on walls or ceilings, worsening allergies indoors, condensation on windows. Professional mold testing ($300-$600) can identify hidden issues.

Health Recommendations

With moderate air quality (AQI 57), most people can be active outdoors. Sensitive groups should take precautions:

Sensitive groups (asthma, COPD, heart disease): consider reducing prolonged outdoor exertion
Keep windows closed on high-pollution days
Use a HEPA air purifier in main living areas
Check AirNow.gov before outdoor exercise

Saint Augustine vs. Nearby Florida Cities

How Saint Augustine's air quality compares to nearby cities:

City	AQI	Category	Population
Saint Augustine	57	Moderate	826,664
Bryceville	63	Moderate	826,664
Rockledge	48	Good	830,505
West Palm Beach	55	Moderate	782,548

ZIP Codes in Saint Augustine

Saint Augustine covers 6 ZIP codes. Air quality can vary by neighborhood based on proximity to highways, industrial areas, and green spaces. Check your specific ZIP code for localized data.

Data Sources

Air quality: EPA AirNow — real-time and historical AQI data
Wildfire risk: FEMA National Risk Index
Mold risk: Derived from EPA, FEMA, Census ACS (humidity, housing age, flood history)
Monthly AQI: EPA Air Quality Statistics

Updated daily.

Frequently Asked Questions

Is the air safe to breathe in Saint Augustine?

Saint Augustine's average AQI is 57 (Moderate). Air quality is acceptable, but unusually sensitive individuals may experience respiratory symptoms during peak pollution times.

How many unhealthy air days does Saint Augustine have?

Saint Augustine experiences 8 unhealthy air quality days per year on average. During these days, everyone — not just sensitive groups — should reduce prolonged outdoor exertion.

What is the AQI in Saint Augustine?

The average Air Quality Index (AQI) in Saint Augustine is 57, categorized as Moderate. The primary pollutant is PM10. AQI ranges from 0-500, where 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and 151+ Unhealthy.

What is the wildfire risk in Saint Augustine?

Saint Augustine has a wildfire risk score of 24 out of 100. Low wildfire risk means smoke events are uncommon, but regional fires can still temporarily affect air quality.

Is mold a concern in Saint Augustine?

Saint Augustine has a mold risk score of 57 out of 100, based on humidity, precipitation, and temperature data. Maintain good ventilation and address any water intrusion promptly to prevent mold growth.

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