Today | Weather | Monday, June 29, 2026

Weather in Lancaster, Pennsylvania

09:08 PM
Now
Cloudy Night
79° F
Feels Like 79°
Precipitation 0 %
Wind 7 mph
Humidity 63 %
Today
Cloudy Weather
Day 88°
Night 66°
Precipitation 11 %
Wind 4 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Lancaster Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (June 29, 2025)

Day

91°

Night

70°

Air Quality in Lancaster

NOW
48 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 11.53 µg/m³
PM10 13.03 µg/m³
O3 0.046 ppm
NO2 7.9 ppb
SO2 1 ppb
CO 0.17 ppm
NH3 1.09 µg/m³
NO 0.01 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.511.53 µg/m³
PM1013.03 µg/m³
O390.9 µg/m³
NO214.89 µg/m³
SO22.72 µg/m³
CO199.38 µg/m³
NH31.09 µg/m³
NO0.01 µg/m³