Worst air pollution Lewistown, today and tomorrow
Today (9 August): Air quality in Lewistown is fair. PM2.5 and O3 are fair; AQI, NO2, and PM1 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 11:00 PM (NO2: 59.9/100).
Tomorrow (10 August 2026): Air quality in Lewistown is poor. AQI worsens to poor; PM2.5 decreases to medium; NO2 increases to poor; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 67.1/100). 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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The dominant factor behind Lewistown's air quality is clean central Pennsylvania ridge-and-valley air; air quality stays good outside of pollen peaks. These factors combine to give Lewistown a fairly typical seasonal air quality pattern for this part of the country. Short-term spikes are still possible even during the generally cleaner stretches of the year.
Today - 9 August | Pollution peaks at 23:00
AQI:
Medium
59.9/100
PM2.5 (fine particles):
Fair
35.8/100
PM10 (coarse particles):
Good
10.9/100
NO2 (nitrogen dioxide):
Medium
59.9/100
O3 (ozone):
Fair
34.2/100
SO2 (sulfur dioxide):
Good
11.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Medium
40.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Poor
67.1/100
PM2.5 (fine particles):
Medium
42.3/100
PM10 (coarse particles):
Good
16.2/100
NO2 (nitrogen dioxide):
Poor
67.1/100
O3 (ozone):
Fair
35.6/100
SO2 (sulfur dioxide):
Good
10.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.7/100
PM1 (ultrafine particles):
Medium
44.8/100
Pollen forecast in Lewistown
View pollen forecastFrequently Asked Questions
Is air quality bad in Lewistown right now?
On 9 August 2026, overall air quality in Lewistown is fair. PM2.5 is the main pollutant at 35.8/100. Pollution peaks around 11:00 PM (NO2: 59.9/100).
Will air quality be worse tomorrow in Lewistown?
On 10 August 2026, air quality conditions in Lewistown will be worse than today, with AQI forecast at poor at 67.1/100. Pollution peaks around 11:00 PM (NO2: 67.1/100).
When is air pollution at its worst in Lewistown?
Lewistown sees air quality change through the year. In short, a mild stretch in early spring often brings some of the year's better air, before summer ozone builds, whereas summer heat waves bring the highest ozone risk, compounded by pollution drifting in from the wider region. Proximity to major highway corridors tends to matter more here than season alone.
Are air quality levels in Lewistown 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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