Today | Weather | Wednesday, March 18, 2026

Weather in Concord, New Hampshire

03:06 AM
Now
Night
21° F
Feels Like 12°
Precipitation 0 %
Wind 9 mph
Humidity 47 %
Today
Cloudy Weather
Day 34°
Night 19°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 4
Overnight Frost 3 AM – 6 AM
Tomorrow Morning Frost 2 AM – 7 AM

Concord Weather Forecast Updated

Last updated on

Air Quality in Concord

NOW
46 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.5 µg/m³
PM10 0.72 µg/m³
O3 0.049 ppm
NO2 1.3 ppb
SO2 0.2 ppb
CO 0.14 ppm
NH3 0.2 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)
PM2.50.5 µg/m³
PM100.72 µg/m³
O396.56 µg/m³
NO22.52 µg/m³
SO20.54 µg/m³
CO162.93 µg/m³
NH30.2 µg/m³
NO0 µg/m³