Today | Weather | Monday, July 20, 2026

Weather in Manchester, New Hampshire

01:30 AM
Now
Cloudy Night
63° F
Feels Like 63°
Precipitation 0 %
Wind 5 mph
Humidity 75 %
Today
Cloudy Weather
Day 82°
Night 57°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Manchester Weather Forecast Updated

23 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 20, 2025)
Stormy Weather

Day

91°

Night

63°

Wind

9 mph

Precipitation

55 %

Air Quality in Manchester

NOW
20 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.79 µg/m³
PM10 1.01 µg/m³
O3 0.022 ppm
NO2 2.4 ppb
SO2 0.1 ppb
CO 0.09 ppm
NH3 0.35 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)
PM2.50.79 µg/m³
PM101.01 µg/m³
O342.97 µg/m³
NO24.48 µg/m³
SO20.33 µg/m³
CO100.27 µg/m³
NH30.35 µg/m³
NO0 µg/m³