Worst air pollution Pharr, today and tomorrow
Today (9 August): Air quality in Pharr is very poor. AQI and PM10 are very poor; O3 is fair; PM2.5 is medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (PM10: 84.6/100).
Tomorrow (10 August 2026): Air quality in Pharr is poor. AQI improves to poor; PM10 decreases to poor; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM10: 78.2/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Pharr's air quality reflects the lower Rio Grande Valley at the Mexico border, with vehicle emissions from US-83 and the McAllen-Pharr international bridge corridor generating concentrated vehicle NOₓ from border crossing traffic. Gulf of Mexico southeasterly breezes provide reliable warm-season ventilation, while cross-border agricultural burning from Tamaulipas and the dense McAllen-Pharr-Hidalgo metropolitan traffic represent the primary regional air quality influences.
Today - 9 August | Pollution peaks at 04:00
AQI:
Very poor
84.6/100
PM2.5 (fine particles):
Medium
56.7/100
PM10 (coarse particles):
Very poor
84.6/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
29.0/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
11.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Poor
78.2/100
PM2.5 (fine particles):
Medium
55.0/100
PM10 (coarse particles):
Poor
78.2/100
NO2 (nitrogen dioxide):
Good
0.4/100
O3 (ozone):
Fair
30.6/100
SO2 (sulfur dioxide):
Good
8.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
15.2/100
Pollen forecast in Pharr
View pollen forecastFrequently Asked Questions
Is air quality bad in Pharr right now?
On 9 August 2026, overall air quality in Pharr is very poor. AQI is the main air quality indicator at 84.6/100. Pollution peaks around 4:00 AM (PM10: 84.6/100).
Will air quality be worse tomorrow in Pharr?
On 10 August 2026, air quality conditions in Pharr will be better than today, with AQI forecast at poor at 78.2/100. Pollution peaks around 11:00 PM (PM10: 78.2/100).
When is air pollution at its worst in Pharr?
Seasonal changes shape air quality across Pharr. In short, spring and autumn generally bring more moderate, cleaner conditions between the extremes of summer and winter cedar season, whereas long, hot summers bring the highest ozone risk, especially across the major urban corridors. Gulf Coast humidity and inland heat can each add their own seasonal pollution patterns.
Are air quality levels in Pharr based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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