Today | Weather | Sunday, March 15, 2026

Weather in Manchester, New Hampshire

04:16 PM
Now
Cloudy Weather
41° F
Feels Like 36°
Precipitation 37 %
Wind 9 mph
UV Index (0 - 11+) 1
Humidity 39 %
Today
Snowy Weather
Day 41°
Night 34°
Precipitation 65 %
Wind 8 mph
UV Index (0 - 11+) 1
Overnight Frost 5 AM – 6 AM

Manchester Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 15, 2025)
Cloudy Weather

Day

66°

Night

48°

Wind

8 mph

UV Index

4

Precipitation

0 %

Air Quality in Manchester

NOW
48 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.16 µg/m³
PM10 2.17 µg/m³
O3 0.052 ppm
NO2 2.1 ppb
SO2 0.4 ppb
CO 0.14 ppm
NH3 0.26 µg/m³
NO 0.55 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)
PM2.51.16 µg/m³
PM102.17 µg/m³
O3101.82 µg/m³
NO23.91 µg/m³
SO21.02 µg/m³
CO159.76 µg/m³
NH30.26 µg/m³
NO0.55 µg/m³