Today | Weather | Wednesday, May 20, 2026
Active Weather Warnings

Weather in New Brunswick, New Jersey

05:53 PM
Now
Stormy Weather
86° F
Feels Like 82°
Precipitation 61 %
Wind 12 mph
UV Index (0 - 11+) 1
Humidity 52 %
Today
Sunny with a Chance of Thunderstorms
Day 95°
Night 61°
Precipitation 65 %
Wind 9 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.

New Brunswick Weather Forecast Updated

16 minutes ago
Last updated on

Air Quality in New Brunswick

NOW
46 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.66 µg/m³
PM10 6.27 µg/m³
O3 0.050 ppm
NO2 2.2 ppb
SO2 0.6 ppb
CO 0.12 ppm
NH3 1.3 µg/m³
NO 0.17 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)
PM2.54.66 µg/m³
PM106.27 µg/m³
O397.65 µg/m³
NO24.1 µg/m³
SO21.7 µg/m³
CO132.68 µg/m³
NH31.3 µg/m³
NO0.17 µg/m³

Weather Alerts and Warnings for New Brunswick

Severe Immediate Observed

Severe Thunderstorm Warning

Severe Thunderstorm Warning issued May 20 at 5:24PM EDT until May 20 at 6:15PM EDT by NWS Mount Holly NJ
May 20, 5:24 PM May 20, 6:15 PM
SVRPHI

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
Hunterdon County in northwestern New Jersey...
Southwestern Morris County in northern New Jersey...
Southwestern Warren County in northwestern New Jersey...
Somerset County in northern New Jersey...
Northwestern Middlesex County in northern New Jersey...
Northwestern Bucks County in southeastern Pennsylvania...
Southeastern Northampton County in eastern Pennsylvania...

* Until 615 PM EDT.

* At 523 PM EDT, a severe thunderstorm was located over Milford, or
11 miles southeast of Easton, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is
possible.

* Locations impacted include...
New Brunswick, Easton, Somerville, Somerset, East Brunswick,
Bridgewater, North Brunswick, Forks, Middlesex, Bound Brook,
Manville, Byram, Wilson, Washington, Mendham, Flemington, Tinicum,
High Bridge, Clinton, and Harmony.
+ Read More
For your protection move to an interior room on the lowest floor of a building.
Updated: May 20, 5:36 PM Source: NWS Alert
Severe Future Possible

Severe Thunderstorm Watch

Severe Thunderstorm Watch issued May 20 at 2:10PM EDT until May 20 at 9:00PM EDT by NWS Mount Holly NJ
May 20, 2:10 PM May 20, 9:00 PM
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
235 IN EFFECT UNTIL 9 PM EDT THIS EVENING FOR THE FOLLOWING AREAS

IN DELAWARE THIS WATCH INCLUDES 3 COUNTIES

IN CENTRAL DELAWARE

KENT

IN NORTHERN DELAWARE

NEW CASTLE

IN SOUTHERN DELAWARE

SUSSEX

IN MARYLAND THIS WATCH INCLUDES 4 COUNTIES

IN NORTHEAST MARYLAND

CAROLINE KENT QUEEN ANNE'S
TALBOT

IN NEW JERSEY THIS WATCH INCLUDES 16 COUNTIES

IN CENTRAL NEW JERSEY

MERCER MONMOUTH

IN NORTHERN NEW JERSEY

HUNTERDON MIDDLESEX MORRIS
SOMERSET SUSSEX WARREN

IN SOUTHERN NEW JERSEY

ATLANTIC BURLINGTON CAMDEN
CAPE MAY CUMBERLAND GLOUCESTER
OCEAN SALEM

IN PENNSYLVANIA THIS WATCH INCLUDES 10 COUNTIES

IN EAST CENTRAL PENNSYLVANIA

BERKS LEHIGH NORTHAMPTON

IN NORTHEAST PENNSYLVANIA

CARBON MONROE

IN SOUTHEAST PENNSYLVANIA

BUCKS CHESTER DELAWARE
MONTGOMERY PHILADELPHIA

THIS INCLUDES THE CITIES OF ALLENTOWN, ATLANTIC CITY, BETHLEHEM,
BLAIRSTOWN, CAMDEN, CENTREVILLE, CHERRY HILL, CHESTERTOWN,
DENTON, DEPTFORD, DOVER, DOYLESTOWN, EAST BRUNSWICK, EASTON,
EASTON, EDISON, FLEMINGTON, FREEHOLD, GEORGETOWN, GLASSBORO,
HAMMONTON, JIM THORPE, MEDIA, MILLVILLE, MOORESTOWN, MORRISTOWN,
MOUNT HOLLY, NEW BRUNSWICK, NEWTON, NORRISTOWN,
NORTH BRUNSWICK TOWNSHIP, OCEAN CITY, PENNSVILLE, PERTH AMBOY,
PHILADELPHIA, READING, SAYREVILLE, SOMERSET, STROUDSBURG,
TOMS RIVER, TRENTON, WEST CHESTER, AND WILMINGTON.
Updated: May 20, 5:36 PM Source: NWS Alert
Moderate Expected Likely

Heat Advisory

Heat Advisory issued May 20 at 1:53PM EDT until May 20 at 8:00PM EDT by NWS Mount Holly NJ
May 20, 1:53 PM May 20, 8:00 PM
WHAT: Heat index values up to 98 degrees expected.

WHERE: Western Monmouth, Middlesex, Ocean, and Southeastern
Burlington Counties.

WHEN: Until 8 PM EDT this evening.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.

ADDITIONAL DETAILS: Showers and thunderstorms arrive this evening
which will end this early season heat.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Updated: May 20, 5:36 PM Source: NWS Alert