West Palm Beach Median AQI 2021: Historical Air Quality Data
Explore 2021 air quality data for West Palm Beach, 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.
West Palm Beach Air Quality in 2021
Historical air quality data for West Palm Beach in 2021 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 West Palm Beach Air Quality →West Palm Beach 2021 Air Quality Snapshot
Across 2021, West Palm Beach's median AQI was around 46 (Good), based on current readings and seasonal patterns for the Miami-Fort Lauderdale-Pompano Beach reporting area. That means a typical day fell near AQI 46, with the dominant pollutant being ground-level ozone (O3), which is common for the Southeast region.
How West Palm Beach Air Quality Changed by Season in 2021
Spring (Mar–May): Usually West Palm Beach's cleanest stretch, with AQI near 28. Mild temperatures and better atmospheric mixing keep both ozone and particulates low.
Summer (Jun–Aug): AQI climbs toward 70 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 48. 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 West Palm Beach?
With West Palm Beach's AQI at 42 (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 West Palm Beach's Air Pollution?
In West Palm Beach, 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: West Palm Beach PM2.5 levels · West Palm Beach 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 West Palm Beach Air Quality
What is the current air quality in West Palm Beach?
The current Air Quality Index (AQI) in West Palm Beach, FL is 42, which is considered good.
Is it safe to exercise outdoors in West Palm Beach?
Yes, with an AQI of 42, outdoor exercise is safe for everyone in West Palm Beach.
When is the best time of year to visit West Palm Beach for good air quality?
Spring and early fall typically offer the best air quality in West Palm Beach. Summer months may have elevated ozone levels, while winter can see higher PM2.5 from temperature inversions.
What causes air pollution in West Palm Beach?
Air pollution in West Palm Beach 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 West Palm Beach
Today's main pollutant in West Palm Beach is ground-level ozone (AQI 42). 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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