Lancaster, MA

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Lancaster, MA Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities
Heat Advisory

Current Weather

3:55 PM

90°F
RealFeel® 100°
RealFeel Shade™ 95°
Air Quality Fair
Wind S 2 mph
Wind Gusts 6 mph
Sunny More Details

Current Air Quality

Today

5/21

47
AQI

Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.

Based on Current Pollutants

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Current Air Quality

Our current air quality index (AQI) provides information on the quality of air that you are breathing and its impact on your health. There are at least six different pollutants that we track that impact the cleanliness of air and your health.

Health & Activities
See all
Tree Pollen
High
The risk of tree pollen symptoms is high. Keep your windows closed and change clothing after returning to the indoors.
Ragweed Pollen
Low
The risk for ragweed pollen symptoms is low.
Mold
Moderate
The risk of mold allergy symptoms is moderate. Be sure to prevent mildew and indoor mold in your home's basement, bathrooms, and laundry room.
Grass Pollen
Low
The risk of grass pollen symptoms is low.
Dust & Dander
Moderate
The risk of dust and dander allergy symptoms is moderate. Closing your windows on windy days can help prevent outside dust or dander from getting into your home.
Arthritis
Low
The risk of experiencing weather-related arthritis pain is low.
Sinus Pressure
Moderate
The risk of weather-related sinus pressure is moderate. Make sure you stay hydrated.
Common Cold
Low
The risk of catching a cold is low.
Flu
Low
The risk of catching the flu is low.
Migraine
Moderate
The risk of suffering from a weather-related migraine is moderate.
Asthma
Moderate
The risk of asthma symptoms is moderate.
Fishing
Great
Fishing conditions are great. Find an area with less boat or human activity to avoid areas where fish are hiding.
Running
Good
Conditions for running are good. Be sure to wear sunscreen and UV-protective activewear.
Golf
Great
Conditions for golfing are great. Stay hydrated when spending time in the sun.
Biking & Cycling
Great
Conditions for cycling are great. Be sure you have the correct gear to keep your core temperature warm during winter months and cool during hot weather.
Beach & Pool
Good
Conditions for a day at the beach or pool are good. Be sure to wear sunscreen and UV-protective clothing when spending time outdoors.
Stargazing
Great
Conditions for stargazing are great. Invest in a red flashlight. It can help prevent additional light pollution.
Hiking
Great
Conditions for hiking are great. Wear sunscreen and UV-protective clothing.
Lawn Mowing
Good
Conditions for lawn mowing are good. Alternating mowing patterns can help all areas of your lawn grow.
Composting
Great
Composting conditions are great. Ensure any food scraps are covered with dry leaves or wood chips to help avoid attracting pests.
Outdoor Entertaining
Great
Conditions for outdoor entertaining will be great. Pay attention to the mosquito or pest forecast and prepare deterrents.
Air Travel
Ideal
Conditions for flying are ideal. Have a safe trip.
Driving
Great
Conditions for driving are great. Remain prepared for changing weather by tracking ongoing forecasts.
Mosquitos
Low
The risk for mosquito activity are low.
Indoor Pests
High
The risk for pest activity is high. Replacing outdoor lights with yellow bug lights can attract less insects near your home.
Outdoor Pests
Moderate
The risk for pest activity is moderate. Do not leave garbage or food open and unattended.
See all

TODAY’S WEATHER FORECAST

5/21
92°Hi
RealFeel® 100°
Some sun; fog early

TONIGHT’S WEATHER FORECAST

5/21
71°Lo
RealFeel® 70°
Mainly clear and very warm

TOMORROW’S WEATHER FORECAST

5/22
97°/ 60°
RealFeel® 99°
Mostly sunny, hot and humid

Looking Ahead

Rain and thunderstorms late Wednesday night through Thursday afternoon

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  • Dorchester, MA ;
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