What is the air quality in Bethlehem today?

The current Air Quality Index (AQI) in Bethlehem is 35 (Good). PM2.5 concentration is 8.26 µg/m³.

What is the temperature in Bethlehem right now?

The current temperature in Bethlehem is 24.8°C (feels like 24.8°C). Humidity is 54.4% and wind speed is 84.4 km/h.

Is it safe to go outside in Bethlehem?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 4.4 (Moderate).

Air Quality in Bethlehem, United States

Windy

24.8°C · 54.4% humidity

24.8°

Feels 24.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

58 1pm

35 4pm

29 7pm

31 10pm

28 1am

28 4am

29 7am

28 10am

Station readings

CAMS model adj +4

Air Quality Index Trend

44h · 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.

54.4%

Humidity

84.4 km/h

Wind NE

1013.3 hPa

Pressure

4.4

UV Moderate

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

8.26 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for Bethlehem?

Temperature & Precipitation

PM2.5 Trend

44h · 1 station

PM2.58.26 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX4.4

Moderate

Station readings (2 stations within 25 km)

8.26

Median

9.6

Average

8.2

Low

11.0

High

PM2.5 µg/m³ · Model: 13.5 · Bias: +5.2

What is the 7-day forecast for Bethlehem?

07-21

25.1° 19.9°

07-22

20.0° 14.4°

0.94 mm

07-23

27.2° 17.1°

28.0 mm

07-24

24.2° 16.2°

1.5 mm

07-25

28.5° 18.9°

3.25 mm

07-26

24.0° 16.3°

7.69 mm

07-27

25.8° 19.5°

4.44 mm

Both models agree Avg diff: 2.9°C

Where are air quality stations near Bethlehem?

Freemansburg, Pennsylvania, USA

2.5 km PM2.5: 5.3 µg/m³

Easton, Pennsylvania

16.2 km PM2.5: 7.3 µg/m³ PM10: 8.7 µg/m³

What cities are near Bethlehem?

34 Allentown 39 Whitehall Township 46 Lansdale 38 Limerick 53 Pottstown 43 Norristown 44 Phoenixville 48 Willow Grove 47 King of Prussia 48 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 2026-07-21T20:02 UTC.