Today | Weather | Wednesday, September 9, 2026

Weather in Nashua, New Hampshire

09:16 PM
Now
Rainy Weather
70° F
Feels Like 66°
Precipitation 59 %
Wind 7 mph
Humidity 90 %
Today
Rainy Weather
Day 75°
Night 66°
Precipitation 89 %
Wind 8 mph

Nashua Weather Forecast Updated

Last updated on

Air Quality in Nashua

NOW
48 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 9.3 µg/m³
PM10 14.72 µg/m³
O3 0.051 ppm
NO2 1.4 ppb
SO2 0.4 ppb
CO 0.11 ppm
NH3 0.07 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)
PM2.59.3 µg/m³
PM1014.72 µg/m³
O3100.78 µg/m³
NO22.55 µg/m³
SO20.92 µg/m³
CO121.69 µg/m³
NH30.07 µg/m³
NO0 µg/m³