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

Weather in Passaic, New Jersey

05:51 PM
Now
Cloudy Weather
82° F
Feels Like 82°
Precipitation 47 %
Wind 9 mph
UV Index (0 - 11+) 1
Humidity 54 %
Today
Sunny with a Chance of Thunderstorms
Day 91°
Night 57°
Precipitation 56 %
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.

Passaic Weather Forecast Updated

Last updated on

Air Quality in Passaic

NOW
41 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.38 µg/m³
PM10 5.59 µg/m³
O3 0.044 ppm
NO2 3.3 ppb
SO2 0.8 ppb
CO 0.12 ppm
NH3 0.91 µg/m³
NO 0.18 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)
PM2.54.38 µg/m³
PM105.59 µg/m³
O386.41 µg/m³
NO26.19 µg/m³
SO22.03 µg/m³
CO141.78 µg/m³
NH30.91 µg/m³
NO0.18 µg/m³

Weather Alerts and Warnings for Passaic

Severe Future Possible

Severe Thunderstorm Watch

Severe Thunderstorm Watch issued May 20 at 2:11PM EDT until May 20 at 9:00PM EDT by NWS Upton NY
May 20, 2:11 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 CONNECTICUT THIS WATCH INCLUDES 4 COUNTIES

IN SOUTHERN CONNECTICUT

FAIRFIELD MIDDLESEX NEW HAVEN
NEW LONDON

IN NEW JERSEY THIS WATCH INCLUDES 5 COUNTIES

IN NORTHEAST NEW JERSEY

BERGEN ESSEX HUDSON
PASSAIC UNION

IN NEW YORK THIS WATCH INCLUDES 11 COUNTIES

IN SOUTHEAST NEW YORK

BRONX KINGS (BROOKLYN) NASSAU
NEW YORK (MANHATTAN) ORANGE PUTNAM
QUEENS RICHMOND (STATEN ISLAND)
ROCKLAND SUFFOLK WESTCHESTER
Updated: May 20, 4:32 PM Source: NWS Alert
Moderate Expected Likely

Heat Advisory

Heat Advisory issued May 20 at 2:17AM EDT until May 20 at 8:00PM EDT by NWS Upton NY
May 20, 2:17 AM May 20, 8:00 PM
WHAT: Heat index values in the middle 90s expected.

WHERE: Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern
Union, Hudson, Western Bergen, Western Essex, Western Passaic, and
Western Union Counties.

WHEN: Until 8 PM EDT this evening.

IMPACTS: Hot temperatures may cause heat illnesses.
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A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Updated: May 20, 4:32 PM Source: NWS Alert