Air Quality in Bethlehem, United States
Windy
18.0°C · 76.1% humidity
18.0°
Feels 18.0°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Bethlehem's air quality — share it
AQI Forecast
Calibrated
6
1pm
6
6
25
4pm
20
16
14
7pm
12
10
9
10pm
8
7
7
1am
7
6
7
4am
7
7
7
7am
6
6
6
10am
6
6
Station readings
32h ago
AQI 2
PM2.5 0.6 µg/m³ · 32h ago
CAMS model
adj -18
24
24
24
24
24
24
25
25
24
24
24
24
24
24
24
25
25
25
25
24
24
24
24
24
Air Quality Index Trend
14h · 1 stnBethlehem's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
76.1%
Humidity
46.5 km/h
Wind SE
1020.0 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.9 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Bethlehem?
Temperature & Precipitation
PM2.5 Trend
14h · 1 stationPM2.55.9 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
What is the 7-day forecast for Bethlehem?
05-29
18.0° 9.6°
0.69 mm
05-30
22.9° 11.0°
12.75 mm
05-31
27.7° 7.6°
06-01
25.2° 10.8°
06-02
19.4° 8.9°
06-03
23.8° 16.5°
6.06 mm
06-04
22.3° 19.1°
1.37 mm
Both models agree
Avg diff: 4.9°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T20:11 UTC.