Lexington Weather

Lexington, Massachusetts, USA

65°F
7/16/2026 7:21am 
  • Lexington Conditions: Smoke, Clear
  • Temperature: 64.9°F / 18.3°CWarmer 1.0°F than last hour.
  • Dew Point: 59.4°FIncreased 2.2°Fsince last hour.
  • Relative Humidity: 82%Increased 3.0% since last hour.
  • 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 - San Diego, CA

    EXTREME HEAT WARNING  

Santa Ana Mountains and Foothills, CA

Extreme Heat Warning issued July 15 at 8:50PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY

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: Wednesday 8:50pm PDT

Alert Effective: Wednesday 8:50pm PDT

Alert Expires: Thursday 6:15am PDT (expect updated alert by this time)

Event Onset: Wednesday 8:50pm PDT

Event Ends: Thursday 8:00pm PDT

Issued by: NWS San Diego CA

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

* WHAT...Hot and humid conditions with elevated overnight
temperatures in the upper 60s and lower 70s. Highs in the low 90s
for portions of inland Orange County, upper 90s to 100 in the San
Diego valleys, 100 to 103 degrees in the Inland Empire, and upper
80s to 90s in the mountains.

* 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 Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Those spending long periods outdoors will be
at greater risk for heat health impacts.

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

Meta data: 
ID: urn:oid:2.49.0.1.840.0.c578b19477ecc2c7e9c7c8961b08fdff70788c97.001.1
Codes: CAZ048, CAZ050, CAZ055, CAZ056, CAZ057, CAZ058, CAZ065, CAZ554
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c578b19477ecc2c7e9c7c8961b08fdff70788c97.001.1