Lexington Weather

Lexington, Massachusetts, USA

77°F
7/12/2026 7:33pm 
  • Lexington Conditions: Clear
  • Temperature: 76.8°F / 24.9°CColder 1.5°F than last hour.
  • Dew Point: 55.0°FDecreased 0.8°Fsince last hour.
  • Relative Humidity: 47%Increased 1.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 30.12 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Watches, Warnings, and Advisories

Issued by the National Weather Service - Denver/Boulder, CO

    AIR QUALITY ALERT  

Denver County, CO

Air Quality Alert issued July 12 at 4:10PM MDT by NWS Denver CO

OZONE ACTION DAY ALERT FROM 400 PM SUNDAY UNTIL 400 PM MONDAY

Areas Affected: Douglas, CO; Denver, CO; Boulder, CO; Arapahoe, CO; Jefferson, CO; Adams, CO; Broomfield, CO; Weld, CO; Larimer, CO

Urgency: Unknown

Severity: Unknown

Certainty: Unknown

Alert Sent: Sunday 4:10pm MDT

Alert Effective: Sunday 4:10pm MDT

Alert Expires: Monday 4:00pm MDT

Event Onset: Sunday 4:10pm MDT

Issued by: NWS Denver CO

Details: 
...OZONE ACTION DAY ALERT FROM 400 PM SUNDAY UNTIL 400 PM MONDAY...

The Colorado Department of Public Health and Environment has
issued the following...

WHAT...Ozone Action Day Alert.

WHERE...Douglas, Jefferson, Denver, western Arapahoe, western
Adams, Broomfield, Boulder, Larimer, and Weld Counties

WHEN...400 PM Sunday July 12 to 400 PM Monday July 13

IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor.  Hot and sunny weather will allow ozone to
reach the Unhealthy for Sensitive Groups category on Sunday and
Monday.  For Colorado air quality conditions, forecasts, and
advisories, visit:
https://www.colorado.gov/airquality/colorado_summary.aspx   If
possible, please help us reduce ozone pollution by limiting
driving gas and diesel-powered vehicles until at least 4 p.m.
Monday, July 13, 2026. Colorado is also addressing ozone pollution
through state policies. For more information about health impacts
and how ozone pollution forms in Colorado, visit:
https://cdphe.colorado.gov/ozone- pollution-and-your-health

HEALTH INFORMATION...Increasing likelihood of respiratory symptoms
and breathing discomfort in active children and adults and people
with lung disease, such as asthma. Active children and adults, and
people with lung disease, such as asthma, should reduce prolonged
or heavy outdoor exertion.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.ffbfb983eea3defca4803a1bb0a9a35053b217f8.001.1
Codes: COC035, COC031, COC013, COC005, COC059, COC001, COC014, COC123, COC069
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ffbfb983eea3defca4803a1bb0a9a35053b217f8.001.1