Air Quality in Lancaster, United States
Windy
12.7°C · 74.5% humidity
12.7°
Feels 12.7°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Lancaster's air quality — share it
AQI Forecast
27
3pm
27
27
23
6pm
25
25
24
9pm
24
24
24
12am
24
24
24
3am
24
24
24
6am
25
25
25
9am
24
24
24
12pm
25
25
Air Quality Index Trend
21h · 1 stnLancaster's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Lancaster is 1.1× the WHO annual guideline of 5 µg/m³.
74.5%
Humidity
74.9 km/h
Wind NNE
1022.2 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.43 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Lancaster?
Temperature & Precipitation
PM2.5 Trend
21h · 1 stationPM2.55.43 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
What is the 7-day forecast for Lancaster?
05-28
29.5° 20.4°
11.56 mm
05-29
28.2° 6.1°
0.44 mm
05-30
24.1° 15.4°
2.0 mm
05-31
27.0° 7.3°
06-01
28.3° 13.7°
0.75 mm
06-02
20.6° 9.7°
06-03
23.8° 21.7°
3.56 mm
Both models agree
Avg diff: 4.4°C
What cities are near Lancaster?
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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 2026-05-28T22:52 UTC.