Corpus Christi Air Quality in Winter
Across 2019–2025, Corpus Christi's winter (December–February) air quality had a median AQI of 41 (Good) over 631 monitored days in the Corpus Christi, TX area. 0.3% of winter days (2 of 631) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 62.9% of days. The cleanest winter on record here was 2020 (median AQI 39, 0 days above 100) and the worst was 2021 (median 43, 1 day above 100, peak AQI 113).
- Good: 67.4%
- Moderate: 32.3%
- Unhealthy for Sensitive Groups: 0.3%
- 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 winter?
Good on a typical day: median AQI 41 across 2019–2025, with 0.3% of winter days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓67.4% of winter days were Good (AQI 0–50), 32.3% Moderate (51–100).
- ✓2 days of 631 reached AQI 101+; the winter peak was 113.
- ✓Cleanest month: December; worst month: January.
Frequently asked questions
What is the air quality like in Corpus Christi in winter?▾
Across 2019–2025, the median daily AQI in Corpus Christi in winter was 41 (Good). 67.4% of days were Good, 32.3% Moderate, and 0.3% reached Unhealthy for Sensitive Groups or worse, based on 631 monitored days in EPA's Air Quality System.
Is winter a good time for outdoor exercise in Corpus Christi?▾
A typical winter day in Corpus Christi sits in the Good range (median AQI 41), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of winter days reached AQI 101+ in 2019–2025.
Which pollutant causes Corpus Christi's winter air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 62.9% of winter days in Corpus Christi. The highest winter AQI recorded in 2019–2025 was 113 (Unhealthy for Sensitive Groups), in 2021.
Corpus Christi winter air quality, year by year
Corpus Christi winter air quality by year (Corpus Christi, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 90 | 41 | 1 | 107 | PM2.5 |
| 2020cleanest | 91 | 39 | 0 | 69 | PM2.5 |
| 2021worst | 89 | 43 | 1 | 113 | PM2.5 |
| 2022 | 90 | 42 | 0 | 74 | PM2.5 |
| 2023 | 90 | 40 | 0 | 77 | PM2.5 |
| 2024 | 91 | 41 | 0 | 75 | PM2.5 |
| 2025 | 90 | 47 | 0 | 74 | PM2.5 |
What winter air means in Corpus Christi
A typical winter day in Corpus Christi sits in the Good range (median AQI 41), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of winter days reached AQI 101+ in 2019–2025.
Winter's median AQI of 41 is below Corpus Christi's whole-year median of 48, making it one of the area's cleaner periods. Nationally, the median Winter AQI across every EPA metro area (278,620 metro-days, 2019–2025) is 40, so Corpus Christi runs in line with the national Winter norm; 0.3% of its Winter days topped AQI 100 versus 0.6% nationally (about the same).
Within the season, December is the cleanest month (median AQI 39, 0.0% of days above 100) and January the worst (median 40, 0.9% 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.