Corpus Christi Air Quality in May
Across 2019–2025, Corpus Christi's May air quality had a median AQI of 57 (Moderate) over 217 monitored days in the Corpus Christi, TX area. 5.6% of May days (12 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 71.4% of days. The cleanest May on record here was 2021 (median AQI 50, 0 days above 100) and the worst was 2024 (median 86, 11 days above 100, peak AQI 153).
- Good: 29.5%
- Moderate: 65.0%
- Unhealthy for Sensitive Groups: 5.1%
- Unhealthy or worse: 0.5%
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 May?
Moderate on a typical day: median AQI 57 across 2019–2025, with 5.6% of May days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓29.5% of May days were Good (AQI 0–50), 65.0% Moderate (51–100).
- ✓12 days of 217 reached AQI 101+; the May peak was 153.
- ✓Best May: 2021; worst May: 2024.
Frequently asked questions
What is the air quality like in Corpus Christi in May?▾
Across 2019–2025, the median daily AQI in Corpus Christi in May was 57 (Moderate). 29.5% of days were Good, 65.0% Moderate, and 5.6% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is May a good time for outdoor exercise in Corpus Christi?▾
A typical May day in Corpus Christi is Moderate (median AQI 57): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 18 of May days (5.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Corpus Christi's May air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 71.4% of May days in Corpus Christi. The highest May AQI recorded in 2019–2025 was 153 (Unhealthy), in 2024.
Corpus Christi May air quality, year by year
Corpus Christi May 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 | 55 | 0 | 76 | PM2.5 |
| 2020 | 31 | 51 | 0 | 74 | O3 |
| 2021cleanest | 31 | 50 | 0 | 84 | PM2.5 |
| 2022 | 31 | 57 | 0 | 83 | PM2.5 |
| 2023 | 31 | 54 | 1 | 101 | PM2.5 |
| 2024worst | 31 | 86 | 11 | 153 | PM2.5 |
| 2025 | 31 | 63 | 0 | 93 | PM2.5 |
What May air means in Corpus Christi
A typical May day in Corpus Christi is Moderate (median AQI 57): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 18 of May days (5.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
May's median AQI of 57 is above Corpus Christi's whole-year median of 48, making it one of the area's dirtier periods. Nationally, the median May AQI across every EPA metro area (104,064 metro-days, 2019–2025) is 44, so Corpus Christi runs above the national May norm; 5.6% of its May days topped AQI 100 versus 1.3% nationally (above average).
May is part of Corpus Christi's spring season (March, April, May); the spring 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.