Today | Weather | Sunday, November 1, 2026

Weather in Bethlehem, Pennsylvania

11:33 PM
Today
Cloudy Night
Day 63°
Night 36°
Precipitation 1 %
Wind 2 mph

Bethlehem Weather Forecast Updated

32 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 1, 2025)
Cloudy Night

Day

59°

Night

37°

Wind

4 mph

Precipitation

4 %

Air Quality in Bethlehem

NOW
37 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.8 µg/m³
PM10 13.01 µg/m³
O3 0.016 ppm
NO2 10.7 ppb
SO2 0.3 ppb
CO 0.24 ppm
NH3 2.69 µg/m³
NO 0.01 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)
PM2.5 – 8.8 µg/m³
PM10 – 13.01 µg/m³
O3 – 32.36 µg/m³
NO2 – 20.09 µg/m³
SO2 – 0.9 µg/m³
CO – 270.88 µg/m³
NH3 – 2.69 µg/m³
NO – 0.01 µg/m³