Today | Weather | Monday, August 3, 2026
Active Weather Warnings

Weather in Philadelphia, Pennsylvania

11:54 AM
Now
Stormy Weather
81° F
Feels Like 86°
Precipitation 61 %
Wind 10 mph
UV Index (0 - 11+) 2
Humidity 85 %
Today
Stormy Weather
Day 82°
Night 66°
Precipitation 91 %
Wind 9 mph
UV Index (0 - 11+) 2

Philadelphia Weather Forecast Updated

49 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 3, 2025)
Cloudy Night

Day

84°

Night

64°

Wind

5 mph

Precipitation

0 %

Air Quality in Philadelphia

NOW
12 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.18 µg/m³
PM10 1.51 µg/m³
O3 0.013 ppm
NO2 2.4 ppb
SO2 0.5 ppb
CO 0.10 ppm
NH3 0.88 µg/m³
NO 0.5 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)
PM2.51.18 µg/m³
PM101.51 µg/m³
O325.93 µg/m³
NO24.5 µg/m³
SO21.21 µg/m³
CO114.99 µg/m³
NH30.88 µg/m³
NO0.5 µg/m³

Weather Alerts and Warnings for Philadelphia

Severe Immediate Likely

Flash Flood Warning

Flash Flood Warning issued August 3 at 9:08AM EDT until August 3 at 1:15PM EDT by NWS Mount Holly NJ
Aug 3, 9:08 AM Aug 3, 1:15 PM
FFWPHI

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
Northeastern New Castle County in northern Delaware...
Southwestern Mercer County in central New Jersey...
Northwestern Burlington County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
Northwestern Gloucester County in southern New Jersey...
Northeastern Salem County in southern New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
Delaware County in southeastern Pennsylvania...
Southeastern Montgomery County in southeastern Pennsylvania...
Philadelphia County in southeastern Pennsylvania...

* Until 115 PM EDT.

* At 908 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across I-95 corridor this morning. Between 1.5 and 3.5
inches of rain have fallen through a combination of rain overnight
and this morning. The expected rainfall rate is 1 to 2 inches in 1
hour. Additional rainfall amounts up to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.

* Some locations that may experience flash flooding include...
Philadelphia, Trenton, Camden, Gloucester City, Bensalem, Ewing,
Chester, Willingboro, Deptford, West Deptford, Florence and
Bellmawr.

This includes the following highways...
Interstate 295 in New Jersey between mile markers 8 and 30...and
between mile markers 57 and 59...and
near mile marker 76.
Interstate 476 in Pennsylvania between mile markers 0 and 10.
New Jersey Turnpike near exit 3...and
between exits 6 and 6A.
Interstate 76 in Pennsylvania between mile markers 335 and 351.
Interstate 95 in Pennsylvania between mile markers 0 and 40.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 76 in New Jersey between mile markers 0 and 3.
Pennsylvania Turnpike between mile markers 341 and 359.
Interstate 95 in Delaware between mile markers 21 and 23.
+ Read More
Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Updated: Aug 3, 11:04 AM Source: NWS Alert
Severe Future Possible

Flood Watch

Flood Watch issued August 3 at 3:13AM EDT until August 3 at 11:00PM EDT by NWS Mount Holly NJ
Aug 3, 3:13 AM Aug 3, 11:00 PM
WHAT: Flooding caused by excessive rainfall continues to be
possible.

WHERE: Portions of northern Delaware, including the following
area, New Castle, New Jersey, including the following areas,
Camden, Eastern Monmouth, Gloucester, Hunterdon, Mercer,
Middlesex, Morris, Northwestern Burlington, Salem, Somerset,
Sussex, Warren and Western Monmouth, and Pennsylvania, including
the following areas, Berks, Delaware, Eastern Chester, Eastern
Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia, Upper
Bucks, Western Chester and Western Montgomery.

WHEN: Through this evening.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas.

ADDITIONAL DETAILS:
- Multiple rounds of showers and thunderstorms are expected
across the area today. Rainfall rates of 1 to 3 inches per
hour possible. Rainfall amounts of 1 to 2 inches are possible
with localized amounts to 3 to 5 inches which could cause
flash flooding.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Updated: Aug 3, 11:04 AM Source: NWS Alert