Longmont, CO

64° F
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Longmont, CO Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

10:45 PM

64°F
RealFeel® 65°
Air Quality Excellent
Wind WNW 2 mph
Wind Gusts 4 mph
Mostly cloudy More Details

Current Air Quality

Today

5/16

17
AQI

Excellent

The air quality is ideal for most individuals; enjoy your normal outdoor activities.

Based on Current Pollutants

More Details

Learn more at Plumb Labs Logo

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
Extremely High
The risk of tree pollen symptoms is extremely high. Ensure you take any allergy medication to ease your symptoms and avoid all outdoor activity.
Ragweed Pollen
Moderate
The risk for ragweed pollen symptoms is moderate. Avoid walking in areas with tall grass or plants.
Mold
Low
The risk of mold allergy symptoms is low.
Grass Pollen
Moderate
The risk of grass pollen symptoms is moderate. Be sure to keep your windows and doors closed.
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
High
The risk of experiencing weather-related arthritis pain is high. Focus on low-impact aerobic exercises.
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
Low
The risk of suffering from a weather-related migraine is low.
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
Great
Conditions for running are great. Be sure to warm up and cool down adequately.
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
Poor
Conditions for stargazing are poor.
Hiking
Great
Conditions for hiking are great. Wear sunscreen and UV-protective clothing.
Lawn Mowing
Great
Conditions for lawn mowing are great. Ensure you are servicing your mower frequently to keep the blades sharp.
Composting
Good
Composting conditions are good. Make sure you frequently add water to your compost to keep it moist.
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

TONIGHT’S WEATHER FORECAST

5/16
54°Lo
RealFeel® 53°
Partly cloudy

TOMORROW’S WEATHER FORECAST

5/17
81°/ 54°
RealFeel® 87°
Times of clouds and sun

Looking Ahead

Rain from late Thursday night to Friday evening, when it will mix with snow

Longmont Weather Radar

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Longmont Weather Radar
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