Lexington Weather

Lexington, Massachusetts, USA

74°F
5/27/2026 9:57pm 
  • Lexington Conditions: Few Clouds
  • Temperature: 74.3°F / 23.5°CColder 1.3°F than last hour.
  • Dew Point: 55.0°FDecreased 3.3°Fsince last hour.
  • Relative Humidity: 51%Decreased 4.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 29.67 inRising 0.02 inHg/hr Rising Slowly
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Air Quality Alert

Issued by the National Weather Service - Chicago, IL

    AIR QUALITY ALERT  

Lake, IL; Northern Cook, IL; Central Cook, IL; McHenry, IL; Kane, IL; DuPage, IL; Kendall, IL; Grundy, IL; Southern Cook, IL; Northern Will, IL; Southern Will, IL; Eastern Will, IL

Air Quality Alert issued May 27 at 1:07AM CDT by NWS Chicago IL

AIR QUALITY ALERT IN EFFECT THROUGH TONIGHT

Areas Affected: McHenry; Lake; Kane; DuPage; Kendall; Grundy; Northern Cook; Central Cook; Southern Cook; Northern Will; Southern Will; Eastern Will

Urgency: Unknown

Severity: Unknown

Certainty: Unknown

Alert Sent: Wednesday 1:07am CDT

Alert Effective: Wednesday 1:07am CDT

Alert Expires: Thursday 12:00am CDT

Event Onset: Wednesday 1:07am CDT

Issued by: NWS Chicago IL

Details: 
...AIR QUALITY ALERT IN EFFECT THROUGH TONIGHT...

The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for the greater Chicago Metropolitan Area
today, Wednesday May 27, and is in effect through tonight.

A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index (AQI) for multiple days.
Ozone is expected to be the primary pollutant of concern today.

Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.

Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.

Media contact...Illinois EPA.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.4af7547fbc1054cce496611181e1cd90340d026b.001.1
Codes: ILZ005, ILZ006, ILZ012, ILZ013, ILZ020, ILZ021, ILZ103, ILZ104, ILZ105, ILZ106, ILZ107, ILZ108
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4af7547fbc1054cce496611181e1cd90340d026b.001.1