Lexington Weather

Lexington, Massachusetts, USA

77°F

7/15/2026 1:43am

Lexington Conditions: Overcast
Temperature: 77.4°F / 25.2°C
Dew Point: 71.1°F
Relative Humidity: 81%
Wind: Calm, 10-min avg: Calm, gust: 3 mph
Barometer: 29.67 in Falling Slowly
Visibility: 10 miles
Rain Today: 0.00 in

Watches, Warnings, and Advisories

Issued by the National Weather Service - Baltimore/Washington

HEAT ADVISORY

Central and Southeast Montgomery, MD

Heat Advisory issued July 15 at 12:49AM EDT until July 15 at 8:00PM EDT by NWS Baltimore MD/Washington DC

HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING

Areas Affected: District of Columbia; Frederick; Carroll; Northern Baltimore; Cecil; Southern Baltimore; Prince Georges; Anne Arundel; Charles; St. Marys; Calvert; Northwest Montgomery; Central and Southeast Montgomery; Northwest Howard; Central and Southeast Howard; Northwest Harford; Southeast Harford; Rappahannock; Culpeper; Fairfax; Arlington/Falls Church/Alexandria; Stafford; Spotsylvania; King George; Northern Fauquier; Southern Fauquier; Western Loudoun; Eastern Loudoun; Northwest Prince William; Central and Southeast Prince William/Manassas/Manassas Park

Urgency: Expected

Severity: Moderate

Certainty: Likely

Alert Sent: Wednesday 12:49am EDT

Alert Effective: Wednesday 12:49am EDT

Alert Expires: Wednesday 9:00am EDT (expect updated alert by this time)

Event Onset: Wednesday 11:00am EDT

Event Ends: Wednesday 8:00pm EDT

Issued by: NWS Baltimore MD/Washington DC

Details:

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING...

* WHAT...Heat index values up to 105 expected.

* WHERE...Portions of DC, central, north central, northeast,
northern, and southern Maryland, and central, northern, and
northwest Virginia.

* WHEN...From 11 AM this morning to 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

Information:

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

Meta data:

ID: urn:oid:2.49.0.1.840.0.4d96d4e6f8ae4d15770d080be12944830a78f65c.001.1
Codes: DCZ001, MDZ004, MDZ005, MDZ006, MDZ008, MDZ011, MDZ013, MDZ014, MDZ016, MDZ017, MDZ018, MDZ503, MDZ504, MDZ505, MDZ506, MDZ507, MDZ508, VAZ040, VAZ051, VAZ053, VAZ054, VAZ055, VAZ056, VAZ057, VAZ501, VAZ502, VAZ505, VAZ506, VAZ526, VAZ527
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4d96d4e6f8ae4d15770d080be12944830a78f65c.001.1

AIR QUALITY ALERT

Central and Southeast Montgomery, MD

Air Quality Alert issued July 14 at 4:40PM EDT by NWS Baltimore MD/Washington DC

AIR QUALITY ALERT IS IN EFFECT FOR WEDNESDAY JULY 15 2026

Areas Affected: Prince Georges; Central and Southeast Montgomery; Central and Southeast Howard

Urgency: Unknown

Severity: Unknown

Certainty: Unknown

Alert Sent: Tuesday 4:47pm EDT

Alert Effective: Tuesday 4:40pm EDT

Alert Expires: Thursday 12:00am EDT

Event Onset: Tuesday 4:40pm EDT

Issued by: NWS Baltimore MD/Washington DC

Details:

...AIR QUALITY ALERT IS IN EFFECT FOR WEDNESDAY JULY 15 2026...

The Maryland Department of the Environment has issued a Code
ORANGE Air Quality Alert Wednesday for
the Maryland suburban DC region.

A Code Orange Air Quality Alert means that air pollution
concentrations within the region may become unhealthy for
sensitive groups. Sensitive groups include children, people
suffering from asthma, heart disease or other lung diseases and
the elderly. The effects of air pollution can be minimized by
avoiding strenuous activity or exercise outdoors.

For more information on ground-level ozone
and fine particles visit the web site
mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx

Meta data:

ID: urn:oid:2.49.0.1.840.0.a7fbde91226a742f66037ff425d35d552e88a01b.001.1
Codes: MDZ013, MDZ504, MDZ506
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a7fbde91226a742f66037ff425d35d552e88a01b.001.1