Today | Weather | Thursday, October 8, 2026

Weather in Lewiston, Maine

12:05 AM
Now
Cloudy Night
50° F
Feels Like 46°
Precipitation 39 %
Wind 7 mph
Humidity 80 %
Today
Partly Sunny with Showers
Day 70°
Night 41°
Precipitation 70 %
Wind 11 mph
UV Index (0 - 11+) 4

Lewiston Weather Forecast Updated

Last updated on

Air Quality in Lewiston

NOW
46 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 8.81 µg/m³
PM10 11.2 µg/m³
O3 0.050 ppm
NO2 3.1 ppb
SO2 0.7 ppb
CO 0.16 ppm
NH3 0.45 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 8.81 µg/m³
PM10 – 11.2 µg/m³
O3 – 97.6 µg/m³
NO2 – 5.82 µg/m³
SO2 – 1.95 µg/m³
CO – 180.42 µg/m³
NH3 – 0.45 µg/m³
NO – 0 µg/m³