What is the air quality in Bethlehem today?

The current Air Quality Index (AQI) in Bethlehem is 40 (Good). PM2.5 concentration is 9.6 µg/m³.

What is the temperature in Bethlehem right now?

The current temperature in Bethlehem is 14.4°C (feels like 14.4°C). Humidity is 46.7% and wind speed is 27.5 km/h.

Is it safe to go outside in Bethlehem?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Bethlehem, United States

Clear

14.4°C · 46.7% humidity

14.4°

Feels 14.4°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

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Station readings 15h ago

AQI 4

PM2.5 1.0 µg/m³ · 15h ago

Air Quality Index Trend

11h · 1 stn

View full history →

Bethlehem's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

46.7%

Humidity

27.5 km/h

Wind W

1022.1 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

9.6 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Bethlehem?

Temperature & Precipitation

PM2.5 Trend

11h · 1 station

PM2.59.6 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (1 station within 25 km)

9.6

Median

9.6

Average

9.6

Low

9.6

High

PM2.5 µg/m³ · Model: 6.5 · Bias: -3.1

What is the 7-day forecast for Bethlehem?

10-20

14.4° 5.0°

3.25 mm

10-21

20.1° 4.3°

0.69 mm

10-22

19.0° 7.3°

2.25 mm

10-23

12.9° 3.5°

10-24

14.0° 5.7°

10-25

18.6° 4.7°

0.5 mm

10-26

12.5° 6.6°

2.19 mm

Both models agree Avg diff: 4.1°C

Where are air quality stations near Bethlehem?

Freemansburg, Pennsylvania, USA

2.5 km PM2.5: 9.6 µg/m³

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Easton, Pennsylvania

16.2 km PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

What cities are near Bethlehem?

40 Allentown 40 Whitehall Township 23 Lansdale 37 Limerick 26 Pottstown 28 Norristown 28 Phoenixville 20 Willow Grove 23 King of Prussia 20 Abington

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T20:56 UTC.