Moderate

51-100: Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Sensor updated: Tue, 28-Jul-2026 4:37pm EDT
Site checked: Tue, 28-Jul-2026 4:39pm EDT
Next check: Tue, 28-Jul-2026 5:09pm EDT

27 μg/m³

Real-Time

27.9 μg/m³

Short Term

29.5 μg/m³

30 Minutes

30.2 μg/m³

1 Hour

27.2 μg/m³

6 Hours

19 μg/m³

24 Hours

Sensor 2

32 μg/m³

Real-Time

30.8 μg/m³

Short Term

32 μg/m³

30 Minutes

32.5 μg/m³

1 Hour

29.3 μg/m³

6 Hours

20.6 μg/m³

24 Hours

Purple Air Legend

The US EPA AQI ranges from 0 to 500, and is partitioned into six categories to report levels of five major pollutants;
including particulate matter (PM) such as PM2.5 and PM10. (The subscript refers to the diameter of the particle in microns.)

Good	Moderate	Unhealthy for Sensitive Groups	Unhealthy	Very Unhealthy	Hazardous
0-50	51-100	101-150	151-200	201-300	301-500

The US EPA AQI for PM is calculated from a 24-hour average: this is based on hourly averages of PM concentrations and is updated daily.
The EPA also reports a real-time AQI called the NowCast. This station's data is updated every 30 minutes.

Data Update Information

This page displays air quality data from a PurpleAir sensor located in Westmoreland, NY.
The data is automatically updated every 30 minutes from a sensor located in Westmoreland, NY.

Understanding AQI

The Air Quality Index (AQI) is a standardized way to report air quality.
It converts complex air quality data into numbers and colors that help people understand when to take action to protect their health.
The AQI focuses on health effects that can happen within a few hours or days after breathing polluted air.

Realtime PurpleAir Sensor Air Quality in Westmoreland NY

Sensor 2

Purple Air Legend

Data Update Information

Understanding AQI