McAllen, TX
Long-term air quality
What this page tells you
This page combines annual PM2.5, unhealthy days, 5-year trend, and data coverage so you can compare long-term air quality, not just today's reading.
McAllen, TX air quality summary: McAllen, TX, holds a clean air score of 19.9 and an air quality grade of F. The annual mean concentration of PM2.5 in the city is 14.1 micrograms per cubic meter. McAllen has a PM2.5 annual mean of 14.1, which is described as elevated for long-term particulate exposure. The long-term air quality in McAllen has been worsening over recent years.
Clean Air Score
A score of 19.9 and an F grade indicate that McAllen faces significant and persistent long-term air quality challenges. These metrics reflect particulate levels that are frequently elevated compared to environmental benchmarks.
🏡 What This Means for Buying
Air quality should be treated as a primary factor in a broader relocation or housing decision in McAllen. The F grade highlights the importance of evaluating long-term environmental exposure in this area.
Indoor Air Quality in McAllen, TX
Outdoor pollution can still affect indoor air when windows are open, filtration is weak, or wildfire smoke moves in.
How to react when today's AQI changes
Use the AQI bands below to decide whether to open windows, run an air purifier, or stay indoors when pollution spikes in McAllen.
AQI 0-50
GoodOpen windows: Open windows if you want fresh air.
Air purifier: No purifier needed for most homes.
Indoor activity: Normal indoor activity is fine.
AQI 51-100
ModerateOpen windows: Sensitive groups should limit open-window time.
Air purifier: Use fans or filtration if dust or pollen is bothering you.
Indoor activity: Most people can stay active indoors.
AQI 101-150
Unhealthy for Sensitive GroupsOpen windows: Keep windows closed.
Air purifier: Run a HEPA purifier in the main room and bedroom.
Indoor activity: Sensitive groups should reduce outdoor exposure.
AQI 151+
UnhealthyOpen windows: Keep windows and doors closed.
Air purifier: Run HEPA continuously and seal obvious drafts.
Indoor activity: Stay indoors as much as possible; use an N95 if you must go out.
Common indoor air concerns in McAllen:
- Seasonal pollen and dust mite allergens
- VOCs from household products
Recommended action: If today's AQI reaches 101 or higher, close windows and run HEPA filtration before indoor air starts to feel smoky or stale.
Top Products for McAllen Homes:
🩺 My Health Risk Assessment
See how McAllen's air quality affects you and your family specifically.
Health Advice
Avoid outdoor activities.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, McAllen's air quality worsened by 3.4 μg/m³. Based on NBER studies, this change correlates with a estimated 13.6% decrease in relative property value retention.
Cleaner Alternatives in TX
Why McAllen earned a 19.9
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
Find the cleanest hours for your run today.
Cycling Forecast
Avoid pollution spikes on your next ride.
📅 Past 30 Days Trend
Real-time daily PM2.5 AQI
🌸 Pollen Outlook
Current Seasonal Forecast
How it worksBased on current seasonal forecast data. Not a long-term pollution rating or relocation score.
Score Breakdown
| Component | Weight | Score Contribution |
|---|---|---|
| Annual Air Quality | 40% | 0 |
| Unhealthy Days | 25% | 0 |
| 5-Year Trend | 20% | 33 |
| Seasonal Variability | 10% | 61.3 |
| Extreme Events | 5% | 75 |
Explore More Air Quality Data
Frequently Asked Questions
About This Data
Data Sources
Historical air quality mapping and scoring are based completely on official U.S. Environmental Protection Agency (EPA) AirNow API data. 5-day AQI forecasts are provided by WAQI.
Methodology
Our Clean Air Score (0-100) is a proprietary algorithm that weighs multiple factors:
- Annual PM2.5 averages (40%)
- Frequency of unhealthy days (25%)
- 5-year pollution trends (20%)
- Seasonal variability and extreme events (15%)
Updates & Accuracy
Real-time data is updated hourly. Historical aggregate scores are recalculated monthly to reflect the latest trends. While we strive for accuracy, sensor maintenance and local conditions can affect individual readings.
Practical Advice
When AQI > 100: Sensitive groups (children, elderly, asthmatics) should limit prolonged outdoor exertion.
When AQI > 150: Everyone should avoid outdoor exercise and keep windows closed.
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McAllen Air Quality FAQs
Is McAllen a good fit for people who care about long-term air quality?
McAllen's clean air score of 19.9 and grade of F suggest it may be a concern for those prioritizing low pollution exposure. The PM2.5 annual mean of 14.1 represents an elevated level of long-term particulate presence.
How frequent is unhealthy air in McAllen?
McAllen records an unhealthy air day frequency of 6.6%, which is a significant factor in its grade of F. This indicates that residents frequently encounter periods of unhealthy particulate levels.
Is air quality in McAllen improving or getting worse over time?
Long-term air quality in McAllen has been worsening over recent years. This negative trend indicates that particulate levels have been increasing over the observed period.
Does air quality vary across different parts of McAllen?
Air quality can vary within McAllen due to local traffic, industry, and location patterns. Exposure levels can change depending on proximity to specific local sources of particulate matter.