Lexington Weather

Lexington, Massachusetts, USA

75°F
7/13/2026 11:41pm 
  • Lexington Conditions: Clear
  • Temperature: 74.5°F / 23.6°CColder 1.4°F than last hour.
  • Dew Point: 62.8°FDecreased 1.4°Fsince last hour.
  • Relative Humidity: 67% 
  • Wind: Calm, 10-min avg: Calm, gust: 2 mph
  • Barometer: 29.99 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   
Southeast Middlesex County, MA - Heat Advisory
 - SEE ALL NEARBY ALERTS -

Air Quality Alert

Issued by the National Weather Service - Duluth, MN

    AIR QUALITY ALERT  

North St. Louis, MN; Northern Cook/Northern Lake, MN; Central St. Louis, MN; Southern Lake/North Shore, MN; Southern Cook/North Shore, MN

Air Quality Alert issued July 13 at 3:05PM CDT by NWS Duluth MN

AIR QUALITY ALERT IN EFFECT FROM 7 AM CDT TUESDAY TO 11 AM CDT THURSDAY

Areas Affected: North St. Louis; Northern Cook/Northern Lake; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore

Urgency: Unknown

Severity: Unknown

Certainty: Unknown

Alert Sent: Monday 3:05pm CDT

Alert Effective: Monday 3:05pm CDT

Alert Expires: Thursday 11:00am CDT

Event Onset: Monday 3:05pm CDT

Issued by: NWS Duluth MN

Details: 
...AIR QUALITY ALERT IN EFFECT FROM 7 AM CDT TUESDAY TO 11 AM CDT THURSDAY...

* WHAT...The Minnesota Pollution Control Agency has issued an Air
Quality Alert for fine particles pollution. The Air Quality Index
(AQI) is expected to reach the Purple or Very Unhealthy category.

* WHERE...Northeast Minnesota.

* WHEN...From 7 AM CDT Tuesday to 11 AM CDT Thursday.

* IMPACTS...The risk of health effects is increased for everyone.

* ADDITIONAL DETAILS...Heavy smoke from several large wildfires
across northeast Minnesota and Canada will move south behind a
frontal boundary across much of northeast Minnesota beginning on
Tuesday. High temperatures will be in the 90s across the alert
area Tuesday, and the combination of wildfire smoke and extreme
heat amplifies health risks. Heavy smoke may move further south
into Minnesota Tuesday night into Wednesday morning, so the air
quality alert may need to be expanded. Additional rounds of heavy
smoke are possible across the region through at least Thursday
morning.

Information: 
Sensitive groups, such as people with lung disease (including
asthma), heart disease, and children and older adults, should
avoid all physical activities outdoors. The general public should
avoid prolonged or heavy exertion. Reduce or eliminate activities
that contribute to air pollution, such as outdoor burning, and
use of residential wood burning devices. Reduce vehicle trips and
vehicle idling as much as possible. Keep windows closed overnight
to prevent smoke from getting indoors.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.6ed037395f54c4e6d56446c75a44638f8e8fd082.001.1
Codes: MNZ011, MNZ012, MNZ019, MNZ020, MNZ021
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.6ed037395f54c4e6d56446c75a44638f8e8fd082.001.1