Lexington Weather

Lexington, Massachusetts, USA

64°F
7/16/2026 5:58am 
  • Lexington Conditions: Smoke, Clear
  • Temperature: 63.9°F / 17.7°CColder 0.3°F than last hour.
  • Dew Point: 56.8°F 
  • Relative Humidity: 78%Increased 1.0% 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
 - SEE ALL NEARBY ALERTS -

Extreme Heat Warning

Issued by the National Weather Service - NWS Phoenix

    EXTREME HEAT WARNING  

Imperial County Southwest, CA; Salton Sea, CA; Imperial County Southeast, CA; Imperial County West, CA; Imperial Valley, CA; Palo Verde Valley, CA; Chuckwalla Valley, CA

Extreme Heat Warning issued July 16 at 12:09AM MST until July 16 at 8:00PM MST by NWS Phoenix AZ

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

Areas Affected: Parker Valley; Yuma; Imperial County Southwest; Salton Sea; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Thursday 12:09am MST

Alert Effective: Thursday 12:09am MST

Alert Expires: Thursday 8:00pm MST

Event Onset: Thursday 12:09am MST

Event Ends: Thursday 8:00pm MST

Issued by: NWS Phoenix AZ

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

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures
106 to 114 degrees. Moderate to Major Heat Risk.

* WHERE...In Arizona, Parker Valley and Yuma. In California,
Chuckwalla Valley, Imperial County Southeast, Imperial County
Southwest, Imperial County West, Imperial Valley, Palo Verde
Valley, and Salton Sea.

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

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.

Information: 
An Extreme Heat Warning means that a period of very hot temperatures,
even by local standards, will occur. Actions should be taken to
lessen the impact of the extreme heat.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible and
drink plenty of water.

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.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.4fc02753fe868b2ec51694152e6b6af05691832b.001.1
Codes: CAZ562, CAZ563, CAZ565, CAZ566, CAZ567, CAZ569, CAZ570
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4fc02753fe868b2ec51694152e6b6af05691832b.001.1