Air Quality in Bethlehem, United States
Windy
27.1°C · 32.7% humidity
27.1°
Feels 27.1°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Bethlehem's air quality — share it
AQI Forecast
Calibrated
29
11pm
29
29
17
2am
20
23
32
5am
33
34
34
8am
26
28
28
11am
29
29
29
2pm
29
29
29
5pm
29
29
29
8pm
29
27
Station readings
41
51
60
CAMS model
adj +2
27
27
27
27
27
27
34
34
34
34
25
27
27
27
27
27
27
27
27
27
27
27
27
25
Air Quality Index Trend
43h · 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.
32.7%
Humidity
43.1 km/h
Wind WNW
1011.1 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
4.0 µg/m³
PM10▲
20.55 µg/m³
050100150200300500
What is the weather forecast for Bethlehem?
Temperature & Precipitation
PM2.5 Trend
43h · 1 stationPM2.54.0 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX1.4
Low
Station readings (1 station within 25 km)
4.0
Median
4.0
Average
4.0
Low
4.0
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +6.0
What is the 7-day forecast for Bethlehem?
08-03
27.1° 19.8°
17.56 mm
08-04
35.8° 18.1°
08-05
31.2° 19.2°
0.44 mm
08-06
28.3° 16.2°
08-07
30.6° 18.5°
3.0 mm
08-08
36.1° 18.9°
0.13 mm
08-09
33.2° 21.0°
Both models agree
Avg diff: 3.7°C
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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 2026-08-08T06:30 UTC.