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Weather in Portland, Maine

12:51 AM
Now
Cloudy Weather
18° F
Feels Like
Precipitation 7 %
Wind 8 mph
Humidity 67 %
Today
Cloudy Weather
Day 21°
Night 18°
Precipitation 1 %
Wind 10 mph
UV Index (0 - 11+) 1

Portland Weather Forecast Updated

7 minutes ago
Last updated on

Air Quality in Portland

NOW
30 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.02 µg/m³
PM10 2.74 µg/m³
O3 0.032 ppm
NO2 5 ppb
SO2 0.5 ppb
CO 0.16 ppm
NH3 0.46 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)
PM2.52.02 µg/m³
PM102.74 µg/m³
O363.49 µg/m³
NO29.32 µg/m³
SO21.33 µg/m³
CO178.68 µg/m³
NH30.46 µg/m³
NO0 µg/m³