Metro area air quality · 2025
Miami, OK
Median AQI 49 (Good). 53.7% of monitored days rated Good across this metro's EPA monitoring network.
- 49
- Median AQI
- 53.7%
- Good-air days
- 1
- Unhealthy days
- 16%
- Cleaner than US metros
Miami, OK posted a 2025 median AQI of 49 (Good) with 53.7% Good days
According to the U.S. EPA Air Quality System, the Miami, OK CBSA recorded a median AQI of 49 across 365 monitored days in 2025, with 53.7% rated Good and 1 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, OK CBSA's 53.7% Good-day share places it cleaner than 16% of US metros in 2025.
- Closest median-AQI peer
- Canton-Massillon, OH (53.1% Good, median AQI 49) is the closest nationwide median-AQI peer to Miami, OK.
- 2020–2025 Good-day shift
- Miami, OK's Good-day share moved -3.6 points from 2020 to 2025 (median AQI +3).
- Median AQI
- Median AQI: 49
Aggregated from EPA Air Quality System (2025), 365 monitored days. EPA AQS →
The verdict
Miami, OK lands in the lower Good-day tercile (53.7% 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 49 and 53.7% of 365 monitored days in the Good band.
- 49
- median AQI · Good
- 53.7%
- days rated Good
- 16%
- cleaner than US metros
- 305
- worst single reading
1 day reached Unhealthy or worse across the metro's monitors in 2025.
Annual release change
What changed in the 2025 EPA annual release
- Miami, OK metro's Good-day share rose from 49.6% to 54.0% between the 2024 and 2025 EPA annual releases, a change of +4.4 percentage points.
- Miami, OK metro's peak single-day AQI rose from 288 to 305 between the 2024 and 2025 EPA annual releases, a change of +17 points.
Miami, OK lands in the lower Good-day tercile (53.7% Good), a thinner clean-air share than most CBSA peers here. Signature read: 53.7% 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 49 over 365 measured days in 2025 (Good / Moderate). The monitored-day split lands at 196 Good (54%), 167 Moderate (46%), and 1 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 66; the highest single-day reading hit 305 (Hazardous).
Across 2020–2025, Good-day share shifted -3.6 points and median AQI moved +3 (worsening). The annual record contains 1 day at Unhealthy or worse. Metros with comparable AQI profiles include Canton-Massillon, OH (53.1% good, AQI 49); Carlsbad-Artesia, NM (53.7% good, AQI 49); Chattanooga, TN-GA (51.0% good, AQI 49).
Air Quality Summary
Median AQI
49
Good
Good Days
53.7%
196 of 365 days
Max AQI
305
Hazardous
Health Grade
Moderate
90th pct: 66
AQI Day Breakdown (2025)
Distribution of 365 monitored days across EPA AQI categories.
Good
196
54%
Moderate
167
46%
USG
1
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
1
0%
Health Impact Assessment
The Miami, OK metro area's air quality is rated Moderate based on 53.7% good air days. There were 1 unhealthy days in 2025 when outdoor activity should be limited.
Air quality posed significant health risk in 2025. Sensitive groups, including people with asthma, COPD, cardiovascular conditions, children, pregnant women, and adults over 65, should monitor AirNow.gov alerts and limit outdoor activity on Unhealthy (AQI 151+) and Very Unhealthy (201+) days. Peak readings reached AQI 305, well into the Hazardous range.
Sensitive group advisory
People with asthma, COPD, heart disease, children, pregnant women, and adults 65+ should follow EPA AQI alerts daily and limit outdoor exertion when AQI exceeds 100. Real-time conditions: airnow.gov.
How does the Miami, OK metro compare?
How Miami, OK compares
5-Year Air Quality Trend
Air quality is worsening in the Miami, OK metro. Highest Good-day share: 2020 (57.5%, 202 of 351 monitored days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 202 | 148 | 1 | 46 | 154 |
| 2021 | 90 | 258 | 3 | 59 | 169 |
| 2022 | 151 | 203 | 4 | 53 | 238 |
| 2023 | 141 | 215 | 1 | 54 | 162 |
| 2024 | 181 | 184 | 0 | 51 | 288 |
| 2025 | 196 | 167 | 0 | 49 | 305 |
Metros with a similar median AQI
CBSA peers nationwide whose annual median AQI sits near Miami, OK (49).
Canton-Massillon, OH
Median AQI 49 · 53.1% Good-day share
Carlsbad-Artesia, NM
Median AQI 49 · 53.7% Good-day share
Chattanooga, TN-GA
Median AQI 49 · 51.0% Good-day share
Kingsville, TX
Median AQI 49 · 51.7% Good-day share
Laramie, WY
Median AQI 49 · 55.6% Good-day share
New Orleans-Metairie, LA
Median AQI 49 · 51.8% Good-day share
Metros with similar unhealthy-day exposure
A second relationship type: metros whose unhealthy-or-worse day count is closest to Miami, OK's 1 (independent of median AQI).
Ann Arbor, MI
1 unhealthy-or-worse days · median AQI 41
Bangor, ME
1 unhealthy-or-worse days · median AQI 33
Baraboo, WI
1 unhealthy-or-worse days · median AQI 35
Bartlesville, OK
1 unhealthy-or-worse days · median AQI 44
Beaumont-Port Arthur, TX
1 unhealthy-or-worse days · median AQI 52
Beaver Dam, WI
1 unhealthy-or-worse days · median AQI 40
Frequently Asked Questions
How many unhealthy air days does Miami, OK have? ▼
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What is the 90th percentile AQI for Miami, OK? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Miami, OK, 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, OK · 2020–2025