Lexington Weather

Lexington, Massachusetts, USA

69°F
8/27/2026 12:59am 
  • Lexington Conditions: Mostly cloudy
  • Temperature: 69.1°F / 20.6°CColder 0.3°F than last hour.
  • Dew Point: 64.4°FIncreased 0.4°Fsince last hour.
  • Relative Humidity: 85%Increased 2.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 30.00 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Air Quality Alert

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

    AIR QUALITY ALERT  

Air Quality Alert issued August 26 at 4:10PM MDT by NWS Denver CO

OZONE ACTION DAY ALERT FROM 400 PM WEDNESDAY UNTIL 400 PM THURSDAY

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

Urgency: Unknown

Severity: Unknown

Certainty: Unknown

Alert Sent: Wednesday 4:11pm MDT

Alert Effective: Wednesday 4:10pm MDT

Alert Expires: Thursday 4:00pm MDT

Event Onset: Wednesday 4:10pm MDT

Issued by: NWS Denver CO

Details: 
...OZONE ACTION DAY ALERT FROM 400 PM WEDNESDAY UNTIL 400 PM THURSDAY...

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 Wednesday August 26 to 400 PM Thursday August 27

IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor.  Ozone concentrations in the Unhealthy for
Sensitive Groups category are possible both Wednesday and Thursday
during the afternoon and evening hours. The best chance for these
elevated ozone levels will be in western parts of the Denver metro
area, including the adjacent foothills.  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.
Thursday, August 27, 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 during the afternoons and evenings both
Wednesday and Thursday.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.ef315fc5f2168dfb17d9e2dcb4b1708f6edc711f.001.1
Codes: COC123, COC001, COC013, COC059, COC031, COC035, COC005, COC069, COC014
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ef315fc5f2168dfb17d9e2dcb4b1708f6edc711f.001.1