Data: EPA AirNow, FEMA National Risk Index Last verified: 2026-05-03

What is AQI?

The Air Quality Index (AQI) is a standardized scale from 0 to 500 that measures air pollution levels. 0-50 is "Good," 51-100 is "Moderate," 101-150 is "Unhealthy for Sensitive Groups," and above 150 is "Unhealthy" for everyone. AQI tracks five major pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. Corpus Christi's average AQI of 66 falls in the "Moderate" range.

How do wildfires affect air quality?

Wildfire smoke contains fine particulate matter (PM2.5) that can travel hundreds of miles and dramatically spike AQI readings. During fire season, even cities far from active fires can experience unhealthy air. HEPA air purifiers (rated for PM2.5) are the most effective indoor protection. Check AirNow.gov for real-time conditions during fire season.

Air Quality Map: Corpus Christi, TX

Each dot represents a ZIP code. Color indicates AQI level. Tap a dot for details.

Good (0-50) Moderate (51-100) USG (101-150) Unhealthy (151+)

Air Quality by ZIP Code in Corpus Christi

AQI varies across Corpus Christi's 37 ZIP codes based on proximity to pollution sources and local geography.

ZIP Code	AQI	Category	Wildfire	Mold
78401	66	Moderate	35	59	View report →
78402	66	Moderate	35	54	View report →
78403	66	Moderate	35	43	View report →
78404	66	Moderate	35	62	View report →
78405	66	Moderate	35	53	View report →
78406	66	Moderate	35	36	View report →
78407	66	Moderate	30	53	View report →
78408	66	Moderate	35	62	View report →
78409	66	Moderate	30	51	View report →
78410	66	Moderate	30	50	View report →
78411	66	Moderate	35	62	View report →
78412	66	Moderate	34	56	View report →
78413	66	Moderate	35	50	View report →
78414	66	Moderate	35	41	View report →
78415	66	Moderate	35	59	View report →

Showing 15 of 20 ZIP codes. View all.

Air Quality Overview

Corpus Christi, Texas has moderate air quality with an average AQI of 66. Air quality is acceptable, though some pollutants may be a concern for a small number of people who are unusually sensitive to air pollution. The dominant pollutant is PM2.5.

The Air Quality Index (AQI) is an EPA-standardized scale from 0 to 500. Values below 50 are "Good," 51-100 "Moderate," 101-150 "Unhealthy for Sensitive Groups," 151-200 "Unhealthy," 201-300 "Very Unhealthy," and above 300 "Hazardous."

Dominant Pollutant: PM2.5

PM2.5 (fine particulate matter) consists of particles smaller than 2.5 micrometers — about 30 times thinner than a human hair. These particles can penetrate deep into the lungs and enter the bloodstream.

Health effects of PM2.5 exposure:

• Short-term: coughing, shortness of breath, aggravated asthma
• Long-term: reduced lung function, cardiovascular disease, premature death
• Most vulnerable: children, elderly, people with heart or lung disease

Common sources in urban areas: vehicle exhaust, construction dust, industrial emissions, wildfire smoke, residential wood burning.

Air Quality by ZIP Code in Corpus Christi

AQI varies across Corpus Christi's 37 ZIP codes based on proximity to pollution sources, traffic patterns, and local geography:

Showing 15 of 37 ZIP codes. Check your specific ZIP for detailed data.

Wildfire Smoke Risk

Corpus Christi has an elevated wildfire smoke risk with an average smoke risk score of 34 (scale 0-100). There have been 1,336 fires recorded within 100 km of city ZIP codes.

Metric	Value
Avg. smoke risk score	34
Max smoke risk score	36
Fires within 100 km	1,336
High-risk ZIP codes	0

Wildfire smoke contains PM2.5, carbon monoxide, and volatile organic compounds. Even short-term exposure can trigger asthma attacks and respiratory distress.

Indoor Mold Risk

Corpus Christi has an average mold risk score of 43 out of 100, with 7 ZIP codes in the high-risk category.

Factor	Value
Mold risk score	43/100
Average humidity	66% RH
High-risk ZIPs	7
Peak season	winter high

Mold risk is influenced by humidity levels, housing age (older homes have more moisture issues), flood history, and water infrastructure quality. Indoor humidity above 60% creates favorable conditions for mold growth.

Signs of mold problems: musty odors, visible growth on walls or ceilings, worsening allergies indoors, condensation on windows. Professional mold testing ($300-$600) can identify hidden issues.

Health Recommendations

With moderate air quality (AQI 66), most people can be active outdoors. Sensitive groups should take precautions:

• Sensitive groups (asthma, COPD, heart disease): consider reducing prolonged outdoor exertion
• Keep windows closed on high-pollution days
• Use a HEPA air purifier in main living areas
• Check AirNow.gov before outdoor exercise

Corpus Christi vs. Nearby Texas Cities

How Corpus Christi's air quality compares to nearby cities:

ZIP Codes in Corpus Christi

Corpus Christi covers 37 ZIP codes. Air quality can vary by neighborhood based on proximity to highways, industrial areas, and green spaces. Check your specific ZIP code for localized data.

Data Sources

• Air quality: EPA AirNow — real-time and historical AQI data
• Wildfire risk: FEMA National Risk Index
• Mold risk: Derived from EPA, FEMA, Census ACS (humidity, housing age, flood history)
• Monthly AQI: EPA Air Quality Statistics

Updated daily.