Today | Weather | Thursday, February 26, 2026

Weather in Nashua, New Hampshire

12:46 AM
Now
Cloudy Night
21° F
Feels Like 18°
Precipitation 0 %
Wind 6 mph
Humidity 65 %
Today
Cloudy Weather
Day 39°
Night 12°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 4
Overnight Frost 12 AM – 8 AM

Nashua Weather Forecast Updated

Last updated on

Air Quality in Nashua

NOW
69 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 20.92 µg/m³
PM10 23.89 µg/m³
O3 0.029 ppm
NO2 14.2 ppb
SO2 0.9 ppb
CO 0.27 ppm
NH3 0.14 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.520.92 µg/m³
PM1023.89 µg/m³
O357.4 µg/m³
NO226.81 µg/m³
SO22.47 µg/m³
CO310.38 µg/m³
NH30.14 µg/m³
NO0 µg/m³