West Palm Beach Air Quality in 2021
In 2021, West Palm Beach's air quality (Miami-Fort Lauderdale-West Palm Beach, FL area) had a median daily AQI of 52 (Moderate) across 365 monitored days. 3 days (0.8%) reached Unhealthy for Sensitive Groups or worse, 160 were Good, and the year's peak AQI was 135 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 305 of those days. The cleanest month of 2021 was October (median AQI 43, 0 days above 100) and the worst was June (median 51, 1 day above 100, peak 119).
- Good: 43.8%
- Moderate: 55.3%
- Unhealthy for Sensitive Groups: 0.8%
- Unhealthy or worse: 0.0%
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How was West Palm Beach's air quality in 2021?
Moderate on a typical day: median AQI 52, with 3 days above AQI 100 out of 365 monitored — the 5th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2021: 135 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 305 days.
- ✓Cleanest month: October; worst: June.
Frequently asked questions
What was the average AQI in West Palm Beach in 2021?▾
EPA's Air Quality System puts West Palm Beach's (Miami-Fort Lauderdale-West Palm Beach, FL) median daily AQI for 2021 at 52, which is Moderate. 3 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 135.
Which month had the worst air quality in West Palm Beach in 2021?▾
The cleanest month of 2021 was October (median AQI 43, 0 days above 100) and the worst was June (median 51, 1 day above 100, peak 119).
Was 2021 a good or bad year for West Palm Beach's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2021 ranks 5th cleanest by days above AQI 100. 2021's median of 52 is in line with the area's typical annual median of 51.
West Palm Beach month by month in 2021
West Palm Beach air quality month by month, 2021 (Miami-Fort Lauderdale-West Palm Beach, FL, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 56 | 0 | 69 | PM2.5 |
| February | 28 | 55 | 0 | 67 | PM2.5 |
| March | 31 | 52 | 0 | 71 | PM2.5 |
| April | 30 | 54 | 0 | 84 | PM2.5 |
| May | 31 | 53 | 1 | 103 | PM2.5 |
| Juneworst | 30 | 51 | 1 | 119 | PM2.5 |
| July | 31 | 53 | 0 | 83 | PM2.5 |
| August | 31 | 49 | 0 | 92 | PM2.5 |
| September | 30 | 45 | 0 | 83 | PM2.5 |
| Octobercleanest | 31 | 43 | 0 | 73 | PM2.5 |
| November | 30 | 43 | 0 | 94 | PM2.5 |
| December | 31 | 49 | 1 | 135 | PM2.5 |
How 2021 compares
Among the 7 years EPA has published for the area (2019–2025), 2021 ranks 5th cleanest by days above AQI 100.
2021's median of 52 is in line with the area's typical annual median of 51.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in West Palm Beach
The latest EPA AirNow observation puts West Palm Beach's AQI at 31 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current West Palm Beach air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Miami-Fort Lauderdale-West Palm Beach, FL), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.