Corpus Christi Air Quality in January
Across 2019–2025, Corpus Christi's January air quality had a median AQI of 40 (Good) over 217 monitored days in the Corpus Christi, TX area. 0.9% of January days (2 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 55.8% of days. The cleanest January on record here was 2020 (median AQI 36, 0 days above 100) and the worst was 2021 (median 46, 1 day above 100, peak AQI 113).
- Good: 72.8%
- Moderate: 26.3%
- Unhealthy for Sensitive Groups: 0.9%
- 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.
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How is the air in Corpus Christi in January?
Good on a typical day: median AQI 40 across 2019–2025, with 0.9% of January days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓72.8% of January days were Good (AQI 0–50), 26.3% Moderate (51–100).
- ✓2 days of 217 reached AQI 101+; the January peak was 113.
- ✓Best January: 2020; worst January: 2021.
Frequently asked questions
What is the air quality like in Corpus Christi in January?▾
Across 2019–2025, the median daily AQI in Corpus Christi in January was 40 (Good). 72.8% of days were Good, 26.3% Moderate, and 0.9% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is January a good time for outdoor exercise in Corpus Christi?▾
A typical January day in Corpus Christi sits in the Good range (median AQI 40), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of January days reached AQI 101+ in 2019–2025.
Which pollutant causes Corpus Christi's January air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 55.8% of January days in Corpus Christi. The highest January AQI recorded in 2019–2025 was 113 (Unhealthy for Sensitive Groups), in 2021.
Corpus Christi January air quality, year by year
Corpus Christi January 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 | 38 | 1 | 107 | O3 |
| 2020cleanest | 31 | 36 | 0 | 54 | O3 |
| 2021worst | 31 | 46 | 1 | 113 | PM2.5 |
| 2022 | 31 | 41 | 0 | 66 | PM2.5 |
| 2023 | 31 | 40 | 0 | 77 | PM2.5 |
| 2024 | 31 | 41 | 0 | 63 | PM2.5 |
| 2025 | 31 | 44 | 0 | 67 | PM2.5 |
What January air means in Corpus Christi
A typical January day in Corpus Christi sits in the Good range (median AQI 40), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of January days reached AQI 101+ in 2019–2025.
January's median AQI of 40 is below Corpus Christi's whole-year median of 48, making it one of the area's cleaner periods. Nationally, the median January AQI across every EPA metro area (95,602 metro-days, 2019–2025) is 39, so Corpus Christi runs in line with the national January norm; 0.9% of its January days topped AQI 100 versus 0.7% nationally (about the same).
January 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.