Worst air pollution Hays, today and tomorrow
Today (9 August): Air quality in Hays is fair. AQI, PM2.5, NO2, and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 36.5/100).
Tomorrow (10 August 2026): Air quality in Hays is fair. PM2.5 decreases to good; NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 8:00 AM (O3: 36.0/100). 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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In Hays, dry high-plains wind is the main influence on air quality, and wind-driven dust is the main seasonal air-quality concern. Overall, Hays sees air quality that tracks fairly closely with typical conditions for its wider region. None of this replaces checking the current forecast before heading outdoors in Hays.
Today - 9 August | Pollution peaks at 00:00
AQI:
Fair
36.5/100
PM2.5 (fine particles):
Fair
20.3/100
PM10 (coarse particles):
Good
7.5/100
NO2 (nitrogen dioxide):
Fair
36.5/100
O3 (ozone):
Fair
32.4/100
SO2 (sulfur dioxide):
Good
10.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
13.8/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 08:00
AQI:
Fair
36.0/100
PM2.5 (fine particles):
Good
18.3/100
PM10 (coarse particles):
Good
7.5/100
NO2 (nitrogen dioxide):
Good
19.6/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
9.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
11.8/100
Pollen forecast in Hays
View pollen forecastFrequently Asked Questions
Is air quality bad in Hays right now?
On 9 August 2026, overall air quality in Hays is fair. AQI is the main air quality indicator at 36.5/100. Pollution peaks around 12:00 AM (NO2: 36.5/100).
Will air quality be worse tomorrow in Hays?
On 10 August 2026, air quality conditions in Hays will be similar to today, with AQI forecast at fair at 36.0/100. Pollution peaks around 8:00 AM (O3: 36.0/100).
When is air pollution at its worst in Hays?
Like most US cities, Hays sees air quality shift from season to season. Typically, the calmest air usually arrives in winter, between planting and harvest dust events, while summer heat and humidity drive ozone formation, and agricultural dust can spike particulate levels during planting and harvest. Farm-heavy surrounding land is the main source of the seasonal dust spikes.
Are air quality levels in Hays 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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