Today | Weather | Tuesday, June 16, 2026
Active Weather Warnings

Weather in Boston, Massachusetts

05:29 AM
Now
Cloudy Night
61° F
Feels Like 57°
Precipitation 0 %
Wind 8 mph
Humidity 71 %
Today
Sunny Weather
Day 77°
Night 57°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Boston Weather Forecast Updated

6 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 16, 2025)
Sunny Weather

Day

68°

Night

59°

Wind

8 mph

UV Index

10

Precipitation

2 %

Air Quality in Boston

NOW
20 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.13 µg/m³
PM10 1.5 µg/m³
O3 0.022 ppm
NO2 1.6 ppb
SO2 0.2 ppb
CO 0.09 ppm
NH3 0.28 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.51.13 µg/m³
PM101.5 µg/m³
O342.78 µg/m³
NO22.92 µg/m³
SO20.61 µg/m³
CO106.99 µg/m³
NH30.28 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Boston

Minor Expected Likely

Coastal Flood Statement

Coastal Flood Statement issued June 16 at 2:10AM EDT until June 17 at 4:00AM EDT by NWS Boston/Norton MA
Jun 16, 2:10 AM Jun 17, 4:00 AM
WHAT: Up to one foot of inundation above ground level in low-
lying areas near shorelines and tidal waterways (2.9 to 13.0
feet Mean Lower Low Water).

WHERE: Eastern Essex, Suffolk, Eastern Norfolk,
Eastern Plymouth, Barnstable and Dukes Counties.

WHEN: Through late tonight.

IMPACTS: Shallow pockets of flooding less than one foot deep
affects the lowest lying areas along the coast, including
Morrissey Boulevard in Boston. Most roads remain passable.
Flooding up to one foot deep affects coastal roads on the
North Shore from Salem to Gloucester and Newburyport. Rough
surf will cause flooding on some coastal roads around the time
of high tide due to splashover.
+ Read More
Do not drive through flooded roadways.
Updated: Jun 16, 5:22 AM Source: NWS Alert