Hourly Weather Forecast for Bayonne, New Jersey

Hourly Weather | Today › Wednesday, May 20, 2026

Active Weather Warnings

Severe Thunderstorm Watch
Heat Advisory
Flood Advisory

Bayonne, New Jersey

8 PM

79°

Feels Like 75°

Humidity: 60%

UV Index: 0

Wind: 12 mph

9 PM

75°

Feels Like 73°

Humidity: 61%

UV Index: 0

Wind: 10 mph

10 PM

73°

Feels Like 68°

Humidity: 72%

UV Index: 0

Wind: 8 mph

11 PM

72°

Feels Like 70°

Humidity: 75%

UV Index: 0

Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 PM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.9 µg/m³
PM₁₀: 6.37 µg/m³
O₃: 0.038 ppm
NO₂: 4.7 ppb
SO₂: 0.9 ppb
CO: 0.13 ppm

Health Recommendations:

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

9 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.84 µg/m³
PM₁₀: 6.2 µg/m³
O₃: 0.032 ppm
NO₂: 5.2 ppb
SO₂: 0.8 ppb
CO: 0.14 ppm

Health Recommendations:

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

10 PM

24 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.93 µg/m³
PM₁₀: 6.27 µg/m³
O₃: 0.026 ppm
NO₂: 5.7 ppb
SO₂: 0.6 ppb
CO: 0.15 ppm

Health Recommendations:

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

11 PM

21 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 4.96 µg/m³
PM₁₀: 6.22 µg/m³
O₃: 0.021 ppm
NO₂: 6.2 ppb
SO₂: 0.5 ppb
CO: 0.15 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Bayonne

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, 7:30 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.

+ Read More

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, 7:30 PM Source: NWS Alert

Minor Expected Likely

Flood Advisory

Flood Advisory issued May 20 at 6:57PM EDT until May 20 at 8:30PM EDT by NWS Upton NY

May 20, 6:57 PM → May 20, 8:30 PM

WHAT: Flooding caused by excessive rainfall is expected.

WHERE: Portions of northeast New Jersey, including the following
counties, Hudson and Union and southeast New York, including the
following counties, Kings (Brooklyn), Nassau, New York
(Manhattan), Queens and Richmond (Staten Island).

WHEN: Until 830 PM EDT.

IMPACTS: Minor flooding in low-lying and poor drainage areas.

ADDITIONAL DETAILS:
- At 657 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 0.5 and 1 inch of rain
has fallen.
- Additional rainfall amounts of 0.5 to 1 inch are expected
over the area. This additional rain will result in minor
flooding.
- Some locations that will experience flooding include...
Jersey City, Jamaica, Elizabeth, Flatbush, Bayonne, Freeport,
Linden, Valley Stream, Long Beach, Coney Island, Garden City,
Lynbrook, Woodmere, Rockaway Beach, Todt Hill, Crown Heights,
Kennedy Airport, The Verrazano Narrows Bridge, Huguenot and
Forest Hills.
- http://www.weather.gov/safety/flood

+ Read More

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Updated: May 20, 7:30 PM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Weather Alerts and Warnings for Bayonne

Severe Thunderstorm Watch

Heat Advisory

Flood Advisory

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