Corpus Christi Air Quality in Fall
Across 2019–2025, Corpus Christi's fall (September–November) air quality had a median AQI of 42 (Good) over 637 monitored days in the Corpus Christi, TX area. 0.6% of fall days (4 of 637) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 52.1% of days. The cleanest fall on record here was 2023 (median AQI 37, 0 days above 100) and the worst was 2024 (median 42, 2 days above 100, peak AQI 105).
- Good: 72.2%
- Moderate: 27.2%
- Unhealthy for Sensitive Groups: 0.6%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Corpus Christi
Today's main pollutant in Corpus Christi is ground-level ozone (AQI 28). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How is the air in Corpus Christi in fall?
Good on a typical day: median AQI 42 across 2019–2025, with 0.6% of fall days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓72.2% of fall days were Good (AQI 0–50), 27.2% Moderate (51–100).
- ✓4 days of 637 reached AQI 101+; the fall peak was 105.
- ✓Cleanest month: November; worst month: October.
Frequently asked questions
What is the air quality like in Corpus Christi in fall?▾
Across 2019–2025, the median daily AQI in Corpus Christi in fall was 42 (Good). 72.2% of days were Good, 27.2% Moderate, and 0.6% reached Unhealthy for Sensitive Groups or worse, based on 637 monitored days in EPA's Air Quality System.
Is fall a good time for outdoor exercise in Corpus Christi?▾
A typical fall day in Corpus Christi sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of fall days reached AQI 101+ in 2019–2025.
Which pollutant causes Corpus Christi's fall air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 52.1% of fall days in Corpus Christi. The highest fall AQI recorded in 2019–2025 was 105 (Unhealthy for Sensitive Groups), in 2024.
Corpus Christi fall air quality, year by year
Corpus Christi fall air quality by year (Corpus Christi, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 91 | 40 | 0 | 74 | PM2.5 |
| 2020 | 91 | 43 | 0 | 85 | PM2.5 |
| 2021 | 91 | 42 | 1 | 105 | O3 |
| 2022 | 91 | 39 | 1 | 101 | O3 |
| 2023cleanest | 91 | 37 | 0 | 80 | O3 |
| 2024worst | 91 | 42 | 2 | 105 | O3 |
| 2025 | 91 | 50 | 0 | 90 | PM2.5 |
What fall air means in Corpus Christi
A typical fall day in Corpus Christi sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of fall days reached AQI 101+ in 2019–2025.
Fall's median AQI of 42 is below Corpus Christi's whole-year median of 48, making it one of the area's cleaner periods. Nationally, the median Fall AQI across every EPA metro area (296,275 metro-days, 2019–2025) is 40, so Corpus Christi runs in line with the national Fall norm; 0.6% of its Fall days topped AQI 100 versus 1.5% nationally (about the same).
Within the season, November is the cleanest month (median AQI 40, 0.0% of days above 100) and October the worst (median 43, 1.4% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Corpus Christi
The latest EPA AirNow observation puts Corpus Christi's AQI at 28 (O3). The figures above are multi-year season statistics, not today's reading.
View current Corpus Christi air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Corpus Christi, TX), 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.