Air Quality in Bethlehem, United States

Windy
10.7°C · 76.5% humidity
10.7°
Feels 10.7°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast Calibrated
99 1am
99
99
27 4am
47
69
80 7am
87
85
89 10am
92
94
95 1pm
96
104
105 4pm
105
105
106 7pm
106
106
106 10pm
106
126
Station readings 6h ago
AQI 22
PM2.5 5.2 µg/m³ · 6h ago
CAMS model adj +72
27
27
27
27
27
34
34
34
27
27
27
27
27
27
34
34
34
34
34
34
34
34
34
54
AD 728×90

Air Quality Index Trend

23h · 1 stn

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.

76.5%
Humidity
50.6 km/h
Wind W
1002.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
27
6.5 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Bethlehem?

Temperature & Precipitation

PM2.5 Trend

23h · 1 station
PM2.56.5 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Both models agree Avg diff: 6.9°C

Where are air quality stations near Bethlehem?

33
Freemansburg, Pennsylvania, USA
2.5 km PM2.5: 7.9 µg/m³
–
Easton, Pennsylvania
16.2 km PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

What cities are near Bethlehem?

26 Allentown 26 Whitehall Township 19 Lansdale 26 Limerick 30 Pottstown 19 Norristown 24 Phoenixville 20 Willow Grove 18 King of Prussia 19 Abington
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T08:04 UTC.