Corpus Christi Air Quality in December
Across 2019–2025, Corpus Christi's December air quality had a median AQI of 39 (Good) over 217 monitored days in the Corpus Christi, TX area. 0.0% of December days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 65.4% of days. The cleanest December on record here was 2021 (median AQI 38, 0 days above 100) and the worst was 2025 (median 49, 0 days above 100, peak AQI 74).
- Good: 70.5%
- Moderate: 29.5%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Corpus Christi
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How is the air in Corpus Christi in December?
Good on a typical day: median AQI 39 across 2019–2025, with 0.0% of December days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓70.5% of December days were Good (AQI 0–50), 29.5% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the December peak was 97.
- ✓Best December: 2021; worst December: 2025.
Frequently asked questions
What is the air quality like in Corpus Christi in December?▾
Across 2019–2025, the median daily AQI in Corpus Christi in December was 39 (Good). 70.5% of days were Good, 29.5% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is December a good time for outdoor exercise in Corpus Christi?▾
A typical December day in Corpus Christi sits in the Good range (median AQI 39), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of December days reached AQI 101+ in 2019–2025.
Which pollutant causes Corpus Christi's December air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 65.4% of December days in Corpus Christi. The highest December AQI recorded in 2019–2025 was 97 (Moderate), in 2025.
Corpus Christi December air quality, year by year
Corpus Christi December air quality by year (Corpus Christi, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 39 | 0 | 68 | PM2.5 |
| 2020 | 31 | 39 | 0 | 61 | O3 |
| 2021cleanest | 31 | 38 | 0 | 97 | PM2.5 |
| 2022 | 31 | 38 | 0 | 59 | PM2.5 |
| 2023 | 31 | 38 | 0 | 58 | PM2.5 |
| 2024 | 31 | 39 | 0 | 63 | PM2.5 |
| 2025worst | 31 | 49 | 0 | 74 | PM2.5 |
What December air means in Corpus Christi
A typical December day in Corpus Christi sits in the Good range (median AQI 39), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of December days reached AQI 101+ in 2019–2025.
December's median AQI of 39 is below Corpus Christi's whole-year median of 48, making it one of the area's cleaner periods. Nationally, the median December AQI across every EPA metro area (95,590 metro-days, 2019–2025) is 39, so Corpus Christi runs in line with the national December norm; 0.0% of its December days topped AQI 100 versus 0.7% nationally (about the same).
December is part of Corpus Christi's winter season (December, January, February); the winter page pools all three months.
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 month 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.