Today | Weather | Wednesday, December 24, 2025

Weather in Nashua, New Hampshire

01:07 PM
Now
Snowy Weather
36° F
Feels Like 25°
Precipitation 51 %
Wind 13 mph
UV Index (0 - 11+) 1
Humidity 67 %
Today
Partly Sunny with a Chance of Snow
Day 36°
Night 21°
Precipitation 65 %
Wind 10 mph
UV Index (0 - 11+) 2

Nashua Weather Forecast Updated

Last updated on

Air Quality in Nashua

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.52 µg/m³
PM10 0.67 µg/m³
O3 0.025 ppm
NO2 2.4 ppb
SO2 0.1 ppb
CO 0.18 ppm
NH3 0.18 µg/m³
NO 0.92 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)
PM2.50.52 µg/m³
PM100.67 µg/m³
O349.58 µg/m³
NO24.46 µg/m³
SO20.3 µg/m³
CO201.99 µg/m³
NH30.18 µg/m³
NO0.92 µg/m³