Miami Air Quality in August
Across 2019–2025, Miami's August air quality had a median AQI of 49 (Good) over 217 monitored days in the Miami-Fort Lauderdale-West Palm Beach, FL area. 0.0% of August days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 96.3% of days. The cleanest August on record here was 2020 (median AQI 46, 0 days above 100) and the worst was 2023 (median 59, 0 days above 100, peak AQI 75).
- Good: 51.6%
- Moderate: 48.4%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Miami Homes
Air quality in Miami is moderate (AQI 54), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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How is the air in Miami in August?
Good on a typical day: median AQI 49 across 2019–2025, with 0.0% of August days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓51.6% of August days were Good (AQI 0–50), 48.4% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the August peak was 92.
- ✓Best August: 2020; worst August: 2023.
Frequently asked questions
What is the air quality like in Miami in August?▾
Across 2019–2025, the median daily AQI in Miami in August was 49 (Good). 51.6% of days were Good, 48.4% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is August a good time for outdoor exercise in Miami?▾
A typical August day in Miami sits in the Good range (median AQI 49), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of August days reached AQI 101+ in 2019–2025.
Which pollutant causes Miami's August air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 96.3% of August days in Miami. The highest August AQI recorded in 2019–2025 was 92 (Moderate), in 2023.
Miami August air quality, year by year
Miami August air quality by year (Miami-Fort Lauderdale-West Palm Beach, FL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 49 | 0 | 72 | PM2.5 |
| 2020cleanest | 31 | 46 | 0 | 69 | PM2.5 |
| 2021 | 31 | 49 | 0 | 92 | PM2.5 |
| 2022 | 31 | 47 | 0 | 90 | PM2.5 |
| 2023worst | 31 | 59 | 0 | 75 | PM2.5 |
| 2024 | 31 | 53 | 0 | 65 | PM2.5 |
| 2025 | 31 | 47 | 0 | 74 | PM2.5 |
What August air means in Miami
A typical August day in Miami sits in the Good range (median AQI 49), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of August days reached AQI 101+ in 2019–2025.
August's median AQI of 49 is in line with Miami's whole-year median of 51, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median August AQI across every EPA metro area (104,152 metro-days, 2019–2025) is 45, so Miami runs above the national August norm; 0.0% of its August days topped AQI 100 versus 3.5% nationally (below average).
August is part of Miami's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Miami
The latest EPA AirNow observation puts Miami's AQI at 54 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Miami 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.