Worst air pollution Walwa, today and tomorrow
Today (25 August): Air quality in Walwa is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 18.3/100).
Tomorrow (26 August 2026): Air quality in Walwa is fair. AQI worsens to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 7:00 AM (NO2: 29.7/100). 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 Walwa, this area sees modest traffic, so seasonal field work and occasional open burning shape air quality more than congestion. With little nearby woodland, this particulate load largely goes unfiltered locally. Short-term spikes can occur with unusual weather or nearby construction and traffic events. Broader regional monitoring generally reflects this same baseline, with small local variation.
Today - 25 August | Pollution peaks at 23:00
AQI:
Good
18.3/100
PM2.5 (fine particles):
Good
4.0/100
PM10 (coarse particles):
Good
1.1/100
NO2 (nitrogen dioxide):
Good
18.3/100
O3 (ozone):
Good
15.6/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Good
5.0/100
Levels show the poorest local air quality during the day
Tomorrow - 26 August | Pollution peaks at 07:00
AQI:
Fair
29.7/100
PM2.5 (fine particles):
Good
4.3/100
PM10 (coarse particles):
Good
1.4/100
NO2 (nitrogen dioxide):
Fair
29.7/100
O3 (ozone):
Good
17.8/100
SO2 (sulfur dioxide):
Good
8.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
4.0/100
Pollen forecast in Walwa
View pollen forecastFrequently Asked Questions
Is air quality bad in Walwa right now?
On 25 August 2026, overall air quality in Walwa is good. AQI is the main air quality indicator at 18.3/100. Pollution peaks around 11:00 PM (NO2: 18.3/100).
Will air quality be worse tomorrow in Walwa?
On 26 August 2026, air quality conditions in Walwa will be worse than today, with AQI forecast at fair at 29.7/100. Pollution peaks around 7:00 AM (NO2: 29.7/100).
When is air pollution at its worst in Walwa?
Winter tends to bring the year's worst particulate spikes here, when wood heater use and gas heating rise just as calm, cold air traps the smoke locally. The warmer months shift the main air quality risk here toward bushfire smoke and ozone, with bushfire smoke capable of pushing particulate readings well above the ozone increase from heat and sun alone.
Are air quality levels in Walwa 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: 24 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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