Port Aransas, Texas Air Quality
Port Aransas air quality today — the AQI, the main pollutant, and whether it’s safe to exercise outside right now
Port Aransas, TX · Air quality right now
The air quality index in Port Aransas, TX is 35 (Good) right now — safe for outdoor activity.
Is it safe to be outside in Port Aransas today?
AQI 35 Yes — air quality is Good
Air is clean — great for outdoor activity.Main pollutant: PM2.5Observed 1:00 AM CDT
Pollutants right now
- PM2.59.2 µg/m³Main pollutantfine particles — smoke, exhaust, soot
- PM1015 µg/m³coarse particles — dust, pollen, ash
- Ozone70 µg/m³smog — builds on hot, sunny days
- NO₂2.5 µg/m³nitrogen dioxide — traffic, combustion
ExerciseOK to run — no air-quality limits on outdoor exercise.
How to read Port Aransas’s air quality
Guides: The AQI Scale, Explained · Air Quality Alerts, Decoded · How to Read a Wildfire Smoke Map · Why Wildfire Smoke Travels 1,000 Miles.
Air quality over time in Port Aransas
Across the EPA’s county records from 2020 to 2025, Port Aransas’s cleanest year was 2020 (median AQI 46) and its most polluted was 2025 (median AQI 53); the typical (median) day has trended more polluted since 2020.
| Year | Median AQI | Unhealthy+ | Main pollutant | USG | Moderate | Good |
|---|---|---|---|---|---|---|
| 2020 | 46 | 2 | PM2.5 | 0 | 137 | 227 |
| 2021 | 47 | 0 | PM2.5 | 2 | 162 | 200 |
| 2022 | 47 | 0 | PM2.5 | 2 | 155 | 208 |
| 2023 | 48 | 0 | PM2.5 | 2 | 167 | 196 |
| 2024 | 51 | 1 | PM2.5 | 15 | 172 | 178 |
| 2025 | 53 | 0 | PM2.5 | 8 | 209 | 148 |
“USG” is Unhealthy for Sensitive Groups (AQI 101–150); “Unhealthy+” combines the Unhealthy, Very Unhealthy, and Hazardous days. In 2024 the EPA tightened the annual fine-particle (PM2.5) standard to 9 µg/m³ from the previous 12 µg/m³, so counties near the old limit read worse against the new one. Source: EPA AQS annual summaries, 2020–2025.
Frequently asked
- What was the worst year for air quality in Port Aransas?
- In the EPA's 2020–2025 county records, 2024 had the most days above AQI 100: 16 days (15 Unhealthy for Sensitive Groups, 1 Unhealthy or worse). The highest median AQI came in 2025 (53; 2024's was 51).
- How many unhealthy air days does Port Aransas have?
- Across 2020–2025, 1% of the days reported for Port Aransas's county had an AQI above 100 (32 of 2191), about 5 days a year. 2025 had 8 days.
- What's the main air pollutant in Port Aransas?
- PM2.5: it drove Port Aransas's county AQI on the most days in every year of the EPA's 2020–2025 records.