Jacksonville Median AQI 2019: Historical Air Quality Data
Explore 2019 air quality data for Jacksonville, including the median AQI, seasonal patterns, pollution trends, and how air quality changed over the year.
Current Air Quality
Air quality is satisfactory, and air pollution poses little or no risk.
Jacksonville Air Quality in 2019
Historical air quality data for Jacksonville in 2019 shows how pollution levels have changed over time. Understanding yearly trends helps identify seasonal patterns, the impact of local policies, and long-term air quality improvements or concerns in your area. Check current conditions below for today's AQI reading.
View Current Jacksonville Air Quality →Jacksonville 2019 Air Quality Snapshot
Across 2019, Jacksonville's median AQI was around 43 (Good), based on current readings and seasonal patterns for the Jacksonville reporting area. That means a typical day fell near AQI 43, with the dominant pollutant being ground-level ozone (O3), which is common for the Southeast region.
How Jacksonville Air Quality Changed by Season in 2019
Spring (Mar–May): Usually Jacksonville's cleanest stretch, with AQI near 25. Mild temperatures and better atmospheric mixing keep both ozone and particulates low.
Summer (Jun–Aug): AQI climbs toward 67 as heat and sunlight drive ozone formation to its yearly peak. Afternoons are the worst time to be outside.
Fall (Sep–Nov): Air quality generally improves as temperatures drop, though early fall can still carry wildfire smoke in the Southeast region.
Winter (Dec–Feb): AQI near 45. Cold-air temperature inversions can trap PM2.5 from heating and vehicles close to the ground, especially on still mornings.
Is It Safe to Exercise Outside in Jacksonville?
With Jacksonville's AQI at 39 (Good), outdoor exercise is generally safe for most people. Conditions are good for running, cycling, and outdoor sports at any time of day.
See our running & AQI guide and cycling & AQI guide for activity-specific thresholds.
What's Causing Jacksonville's Air Pollution?
In Jacksonville, the leading pollutant is ground-level ozone (O3). As part of the Southeast region, the main drivers of air pollution here are:
- •Vehicle emissions worsened by urban sprawl and car dependency
- •Power-plant emissions from the regional energy grid
- •High humidity that traps pollutants near ground level
- •Seasonal wildfire and prescribed-burn smoke
Dig deeper: Jacksonville PM2.5 levels · Jacksonville ozone levels
Air Purifier & Monitor Buying Guides
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PM2.5 Levels
Fine particulate matter data →
Ozone Levels
Ground-level ozone data →
Seasonal Guides
Air quality by season →
Health Effects
Learn about air pollution impacts →
Frequently Asked Questions About Jacksonville Air Quality
What is the current air quality in Jacksonville?
The current Air Quality Index (AQI) in Jacksonville, FL is 39, which is considered good.
Is it safe to exercise outdoors in Jacksonville?
Yes, with an AQI of 39, outdoor exercise is safe for everyone in Jacksonville.
When is the best time of year to visit Jacksonville for good air quality?
Spring and early fall typically offer the best air quality in Jacksonville. Summer months may have elevated ozone levels, while winter can see higher PM2.5 from temperature inversions.
What causes air pollution in Jacksonville?
Air pollution in Jacksonville can come from vehicle emissions, industrial activity, construction, wildfires, and weather patterns. Local geography and seasonal factors also play a significant role.
Explore More Air Quality Data
Reduce Indoor Ozone in Jacksonville
Today's main pollutant in Jacksonville is ground-level ozone (AQI 39). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Compare activated-carbon purifiers (for gases & ozone):
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