Lexington Weather

Lexington, Massachusetts, USA

71°F
7/16/2026 9:07am 
  • Lexington Conditions: Smoke, Clear
  • Temperature: 71.4°F / 21.9°CWarmer 4.5°F than last hour.
  • Dew Point: 63.1°FIncreased 2.5°Fsince last hour.
  • Relative Humidity: 75%Decreased 5.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: 2 mph
  • Barometer: 29.79 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   
Southeast Middlesex County, MA - Air Quality Alert - Air Quality Alert
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Extreme Heat Warning

Issued by the National Weather Service - San Diego, CA

    EXTREME HEAT WARNING  

San Bernardino and Riverside County Valleys-The Inland Empire, CA; San Diego County Inland Valleys, CA; San Bernardino County Mountains, CA; Riverside County Mountains, CA; Santa Ana Mountains and Foothills, CA; San Diego County Mountains, CA; San Gorgonio Pass Near Banning, CA; Orange County Inland, CA

Extreme Heat Warning issued July 16 at 4:21AM PDT until July 16 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING

Areas Affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; San Gorgonio Pass Near Banning; Orange County Inland

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Thursday 4:21am PDT

Alert Effective: Thursday 4:21am PDT

Alert Expires: Thursday 8:00pm PDT

Event Onset: Thursday 4:21am PDT

Event Ends: Thursday 8:00pm PDT

Issued by: NWS San Diego CA

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

* WHAT...High temperatures in the lower 90s for portions of inland
Orange County, in the 90s in the San Diego valleys, in the mid 90s
to 104 in the Inland Empire, and in the upper 80s to upper 90s in
the mountains below 6000 feet.

* WHERE...Orange County Inland Areas, Riverside County Mountains,
San Bernardino County Mountains, San Bernardino and Riverside
County Valleys-The Inland Empire, San Diego County Mountains, San
Diego County Valleys, San Gorgonio Pass near Banning, and Santa
Ana Mountains and Foothills.

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

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

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

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.2f8f4eecdaac48e3f062c327ee2fd2a1f47f8b82.001.1
Codes: CAZ048, CAZ050, CAZ055, CAZ056, CAZ057, CAZ058, CAZ065, CAZ554
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2f8f4eecdaac48e3f062c327ee2fd2a1f47f8b82.001.1