Today | Weather | Tuesday, September 23, 2025

Weather in Manchester, New Hampshire

04:16 AM

Now

55° F

Feels Like 55°

Precipitation 7 %

Wind 5 mph

Humidity 90 %

Today

Day 82°

Night 63°

Precipitation 75 %

Wind 11

UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Manchester Weather Forecast Updated

Last updated on September 23, 2025 2:54 AM

Air quality in Manchester

NOW

40 AQI

Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 9.23 µg/m³

PM10 12.72 µg/m³

O₃ 30.97 ppb

NO₂ 10.21 ppb

SO₂ 0.86 ppb

CO 184.44 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

View Hourly Air Quality Forecast