Metro area air quality · 2025
Miami-Fort Lauderdale-West Palm Beach, FL
Median AQI 48 (Good). 52.9% of monitored days rated Good across this metro's EPA monitoring network.
- 48
- Median AQI
- 52.9%
- Good-air days
- 0
- Unhealthy days
- 16%
- Cleaner than US metros
Miami-Fort Lauderdale-West Palm Beach, FL posted a 2025 median AQI of 48 (Good) with 52.9% Good days
According to the U.S. EPA Air Quality System, the Miami-Fort Lauderdale-West Palm Beach, FL CBSA recorded a median AQI of 48 across 365 monitored days in 2025, with 52.9% rated Good and 0 unhealthy or worse. This is an annual metro comparison, not a live advisory.
Data source EPA Air Quality System (AQS)
- Cleaner than US metros
- The Miami-Fort Lauderdale-West Palm Beach, FL CBSA's 52.9% Good-day share places it cleaner than 16% of US metros in 2025.
- Closest median-AQI peer
- Baltimore-Columbia-Towson, MD (58.1% Good, median AQI 48) is the closest nationwide median-AQI peer to Miami-Fort Lauderdale-West Palm Beach, FL.
- 2020–2025 Good-day shift
- Miami-Fort Lauderdale-West Palm Beach, FL's Good-day share moved +8.5 points from 2020 to 2025 (median AQI -4).
- Median AQI
- Median AQI: 48
Aggregated from EPA Air Quality System (2025), 365 monitored days. EPA AQS →
The verdict
Miami-Fort Lauderdale-West Palm Beach, FL lands in the lower Good-day tercile (52.9% Good), a thinner clean-air share than most CBSA peers here. On the EPA scale the metro runs good, among the more polluted US metros, with a median AQI of 48 and 52.9% of 365 monitored days in the Good band.
- 48
- median AQI · Good
- 52.9%
- days rated Good
- 16%
- cleaner than US metros
- 113
- worst single reading
No day crossed into the Unhealthy tier across the metro's monitors in 2025.
Annual release change
What changed in the 2025 EPA annual release
- Miami-Fort Lauderdale-West Palm Beach, FL metro's peak single-day AQI fell from 197 to 113 between the 2024 and 2025 EPA annual releases, a change of -84 points.
- Miami-Fort Lauderdale-West Palm Beach, FL metro's Good-day share rose from 44.9% to 53.0% between the 2024 and 2025 EPA annual releases, a change of +8.1 percentage points.
- Miami-Fort Lauderdale-West Palm Beach, FL metro's Unhealthy-category days fell from 3 to 0 between the 2024 and 2025 EPA annual releases, a change of -3 days.
- Miami-Fort Lauderdale-West Palm Beach, FL metro's median AQI fell from 51 to 48 between the 2024 and 2025 EPA annual releases, a change of -3 points.
Miami-Fort Lauderdale-West Palm Beach, FL lands in the lower Good-day tercile (52.9% Good), a thinner clean-air share than most CBSA peers here. Signature read: 52.9% Good-day share (low tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 48 over 365 measured days in 2025 (Good / Moderate). The monitored-day split lands at 193 Good (53%), 171 Moderate (47%), and 1 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 64; the highest single-day reading hit 113 (USG).
Across 2020–2025, Good-day share shifted +8.5 points and median AQI moved -4 (improving). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Baltimore-Columbia-Towson, MD (58.1% good, AQI 48); Boulder, CO (58.4% good, AQI 48); Columbus, GA-AL (53.4% good, AQI 48).
Air Quality Summary
Median AQI
48
Good
Good Days
52.9%
193 of 365 days
Max AQI
113
USG
Health Grade
Moderate
90th pct: 64
AQI Day Breakdown (2025)
Distribution of 365 monitored days across EPA AQI categories.
Good
193
53%
Moderate
171
47%
USG
1
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The Miami-Fort Lauderdale-West Palm Beach, FL metro area's air quality is rated Moderate based on 52.9% good air days. No unhealthy air days were recorded in 2025.
Air quality is generally acceptable. Unusually sensitive people should monitor real-time conditions at AirNow.gov during high-pollution events.
How does the Miami-Fort Lauderdale-West Palm Beach, FL metro compare?
How Miami-Fort Lauderdale-West Palm Beach, FL compares
5-Year Air Quality Trend
Air quality is improving in the Miami-Fort Lauderdale-West Palm Beach, FL metro. Highest Good-day share: 2025 (53.0%, 193 of 364 monitored days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 162 | 202 | 0 | 52 | 142 |
| 2021 | 160 | 202 | 0 | 52 | 135 |
| 2022 | 176 | 187 | 0 | 51 | 136 |
| 2023 | 136 | 225 | 3 | 53 | 170 |
| 2024 | 164 | 198 | 3 | 51 | 197 |
| 2025 | 193 | 171 | 0 | 48 | 113 |
Metros with a similar median AQI
CBSA peers nationwide whose annual median AQI sits near Miami-Fort Lauderdale-West Palm Beach, FL (48).
Baltimore-Columbia-Towson, MD
Median AQI 48 · 58.1% Good-day share
Boulder, CO
Median AQI 48 · 58.4% Good-day share
Columbus, GA-AL
Median AQI 48 · 53.4% Good-day share
Durango, CO
Median AQI 48 · 60.8% Good-day share
Greenville-Anderson-Mauldin, SC
Median AQI 48 · 55.3% Good-day share
Knoxville, TN
Median AQI 48 · 56.4% Good-day share
Metros with similar unhealthy-day exposure
A second relationship type: metros whose unhealthy-or-worse day count is closest to Miami-Fort Lauderdale-West Palm Beach, FL's 0 (independent of median AQI).
Aberdeen, SD
0 unhealthy-or-worse days · median AQI 27
Aberdeen, WA
0 unhealthy-or-worse days · median AQI 22
Adrian, MI
0 unhealthy-or-worse days · median AQI 41
Akron, OH
0 unhealthy-or-worse days · median AQI 45
Albany, GA
0 unhealthy-or-worse days · median AQI 46
Albany, OR
0 unhealthy-or-worse days · median AQI 27
Frequently Asked Questions
How many unhealthy air days does Miami-Fort Lauderdale-West Palm Beach, FL have? ▼
What is the air quality in the Miami-Fort Lauderdale-West Palm Beach, FL metro area? ▼
Is air quality in Miami-Fort Lauderdale-West Palm Beach, FL getting better or worse? ▼
What does AQI 48 mean for health? ▼
How does Miami-Fort Lauderdale-West Palm Beach, FL compare to other metro areas? ▼
What is the 90th percentile AQI for Miami-Fort Lauderdale-West Palm Beach, FL? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Miami-Fort Lauderdale-West Palm Beach, FL, 2025. See our methodology for how AQI, median, and coverage figures are computed.
Read our methodology , how this data is sourced, computed, and verified.
Source: U.S. EPA Air Quality System (AQS) Annual AQI by CBSA summary, Miami-Fort Lauderdale-West Palm Beach, FL · 2020–2025