St. James City, Florida Air Quality
St. James City has a median AQI of 42, earning an air quality grade of A- — excellent air quality that ranks better than 44% of US cities. Air quality has remained relatively stable over the past decade. Ground-level ozone is the primary concern, typically peaking on warm sunny days due to vehicle and industrial emissions. In 2025, St. James City recorded 203 good air quality days (74% of monitored days).
Population: 3,412 • County: Lee
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Quick Facts
| Current AQI | 36 — Good |
| Air Quality Grade | A- |
| Median AQI (2025) | 42 |
| vs. U.S. Cities | Better than 44% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 30 Days
Current Pollutant Levels
Real-time data from EPA AirNow
AQI Trend (10 Years)
Air Quality Days by Year
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About St. James City Air Quality
What is the air quality in St. James City today?
The current AQI in St. James City is 36, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in St. James City getting better or worse?
Air quality in St. James City has remained relatively stable over the past decade, with a median AQI of around 42.
What is the most common air pollutant in St. James City?
Ozone is the primary air pollutant in St. James City, responsible for the most air quality-impacted days in 2025. Ground-level ozone forms when sunlight reacts with vehicle and industrial emissions on warm days.
How many unhealthy air days does St. James City have per year?
In 2025, St. James City had 0 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 203 good days and 70 moderate days out of 273 days monitored.
What air quality grade does St. James City receive?
St. James City receives an air quality grade of A-, placing it better than 44% of US cities. This grade is based on a median AQI of 42 for 2025, derived from EPA monitoring data.
Air Quality Grade
Better than 44% of US cities
Nearby Cities
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National Rankings
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Best Air Quality Cities →All city rankingsRecommended Air Purifiers for St. James City
Based on your area's air quality (median AQI: 42), we recommend these air purifiers to help protect your health indoors.
RabbitAir MinusA2
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Molekule Air Pro
Commercial-grade with patented PECO technology for destroying pollutants.
Blueair Blue Pure 211+
High performance for large rooms with simple operation.
Dyson Pure Cool TP04
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