Lexington Weather

Lexington, Massachusetts, USA

67°F
7/16/2026 8:10am 
  • Lexington Conditions: Smoke, Clear
  • Temperature: 67.3°F / 19.6°CWarmer 2.7°F than last hour.
  • Dew Point: 61.2°FIncreased 2.6°Fsince last hour.
  • Relative Humidity: 81% 
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 29.80 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   
Southeast Middlesex County, MA - Air Quality Alert - Air Quality Alert
 - SEE ALL NEARBY ALERTS -

Watches, Warnings, and Advisories

Issued by the National Weather Service - Los Angeles, CA

    RED FLAG WARNING  

Northern Ventura County Mountains, CA

Red Flag Warning issued July 15 at 2:46PM PDT until July 16 at 9:00AM PDT by NWS Los Angeles/Oxnard CA

RED FLAG WARNING THROUGH THURSDAY MORNING ACROSS THE INTERIOR MOUNTAINS OF LOS ANGELES, VENTURA, SANTA BARBARA COUNTIES, AS WELL AS SOUTHERN SANTA BARBARA COUNTY FOR HOT, DRY, AND GUSTY CONDITIONS

Areas Affected: Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Wednesday 2:46pm PDT

Alert Effective: Wednesday 2:46pm PDT

Alert Expires: Thursday 9:00am PDT

Event Onset: Wednesday 2:46pm PDT

Event Ends: Thursday 9:00am PDT

Issued by: NWS Los Angeles/Oxnard CA

Details: 
...RED FLAG WARNING THROUGH THURSDAY MORNING ACROSS THE INTERIOR MOUNTAINS OF LOS ANGELES, VENTURA, SANTA BARBARA COUNTIES, AS WELL AS SOUTHERN SANTA BARBARA COUNTY FOR HOT, DRY, AND GUSTY CONDITIONS...

...RED FLAG WARNING THROUGH THURSDAY MORNING ACROSS THE INTERIOR
MOUNTAINS OF LOS ANGELES, VENTURA, SANTA BARBARA COUNTIES, AS
WELL AS SOUTHERN SANTA BARBARA COUNTY FOR HOT, DRY, AND GUSTY
CONDITIONS...

.Gusty northwest to north winds, hot temperatures, and low
relative humidity will produce the potential for critical fire-
weather conditions through early Thursday.

* WINDS...Northwest to north winds 20 to 30 mph with gusts of 30
to 50 mph, strongest in Sundowner wind prone areas of southern
Santa Barbara County.

* RELATIVE HUMIDITY...10 to 25 percent.

* IMPACTS...If fire ignition occurs, conditions are favorable
for extreme fire behavior, rapid fire growth, and long range
spotting, which could threaten life and property. The hot air
mass will also contribute to the potential for significant
vertical plume growth.

Information: 
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. Use extreme caution
with anything that can spark a wildfire. Residents near wildland
interfaces should be prepared to evacuate if a wildfire breaks
out. See readyforwildfire.org and wildfirerisk.org for
information.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.44a44a810a5022ab5fce97c3fdd27199f0315092.001.1
Codes: CAZ349, CAZ350, CAZ351, CAZ352, CAZ353, CAZ376, CAZ377, CAZ378
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.44a44a810a5022ab5fce97c3fdd27199f0315092.001.1

 

    HEAT ADVISORY  

Northern Ventura County Mountains, CA

Heat Advisory issued July 16 at 2:28AM PDT until July 16 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING

Areas Affected: Catalina and Santa Barbara Islands; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Southern Ventura County Mountains; Northern Ventura County Mountains; San Miguel and Santa Rosa Islands; Santa Cruz and Anacapa Islands

Urgency: Expected

Severity: Moderate

Certainty: Likely

Alert Sent: Thursday 2:28am PDT

Alert Effective: Thursday 2:28am PDT

Alert Expires: Thursday 8:00pm PDT

Event Onset: Thursday 2:28am PDT

Event Ends: Thursday 8:00pm PDT

Issued by: NWS Los Angeles/Oxnard CA

Details: 
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WHAT...Temperatures up to 104.

* WHERE...A portion of southwest California.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...There is a high risk for heat illness for sensitive
populations including the very young, the very old, those without
air conditioning, and those active outdoors.

Information: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Monitor the latest forecasts and warnings for updates.

If you do not have air conditioning in your home or lack shelter,
you can call 211 for assistance locating appropriate shelter from
the heat.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.13db4367df767c898b6c02e1d32f4f7d27560648.003.1
Codes: CAZ087, CAZ341, CAZ342, CAZ343, CAZ344, CAZ345, CAZ347, CAZ348, CAZ354, CAZ355, CAZ362, CAZ366, CAZ367, CAZ376, CAZ377, CAZ549, CAZ550
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.13db4367df767c898b6c02e1d32f4f7d27560648.003.1