AIR QUALITY FL

Air Quality in Saint Augustine, FL: Good (39 AQI)

AQI 39 · Good · PM10 · Updated 2026-07-18

Saint Augustine's air quality is good. Air pollution poses little or no risk.

Data: EPA AirNow, FEMA National Risk Index Last verified: 2026-07-18

Average AQI

Good

AQI Category

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 39 falls in the "Good" 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	51	Moderate	23	50	View report →
32085	35	Good	24	52	View report →
32086	35	Good	24	58	View report →
32092	35	Good	24	53	View report →

Air Quality Overview

Saint Augustine, Florida has good air quality with an average AQI of 39. This means air pollution poses little or no risk. The dominant pollutant measured 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	51	Moderate	23	50
32085	35	Good	24	52
32086	35	Good	24	58
32092	35	Good	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 good air quality (AQI 39), Saint Augustine residents can enjoy outdoor activities without significant restrictions. General tips:

Monitor AQI during wildfire season for temporary spikes
Use HEPA air purifiers indoors if you have respiratory conditions
Maintain indoor humidity between 30-50% to prevent mold

Saint Augustine vs. Nearby Florida Cities

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

City	AQI	Category	Population
Saint Augustine	39	Good	159,928
Roseland	35	Good	167,753
Coral Springs	61	Moderate	146,972
Melbourne	42	Good	175,175

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?

Yes - Saint Augustine's average AQI is 39 (Good). Air pollution poses little or no risk for the general population.

How many unhealthy air days does Saint Augustine have?

Saint Augustine has zero recorded unhealthy air quality days, which is excellent. Air quality can still vary seasonally due to wildfire smoke, pollen, or industrial activity.

What is the AQI in Saint Augustine?

The average Air Quality Index (AQI) in Saint Augustine is 39, categorized as Good. 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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