Hourly Weather | Today Thursday, July 16, 2026
Active Weather Warnings
Lowell, Massachusetts
11 PM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 55%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 PM
110 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.57 µg/m³
  • PM10: 39.73 µg/m³
  • O3: 0.040 ppm
  • NO2: 3 ppb
  • SO2: 0.2 ppb
  • CO: 0.43 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

Weather Alerts and Warnings for Lowell

Air Quality Alert

Air Quality Alert issued July 16 at 6:18AM EDT by NWS Boston/Norton MA
Jul 16, 6:18 AM Jul 17, 12:00 AM
The Massachusetts Department of Environmental Protection has issued
an Air Quality Alert for Fine Particulates, until midnight EDT
tonight.

An Air Quality Alert day means that Fine Particulates concentrations
within the region may approach or exceed levels that are Unhealthy
for Sensitive Groups.

Air is unhealthy for sensitive children and adults, such as those
with asthma, lung or heart disease, and older adults. Sensitive
children and adults should limit prolonged outdoor activity.

For additional information, please visit the Massachusetts
Department of Environmental Protection website at:
https://mass.gov/dep/massair/forecast
Updated: Jul 16, 11:05 PM Source: NWS Alert