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Boston vs Portland

Live AQI Comparison

Updated 3h ago · Data from OpenAQ

Boston

United States

33

Good

PM2.58 µg/m³
PM10
VS
Portland

United States

15

Good

PM2.53.7 µg/m³
PM10

Verdict

Boston currently has worse air quality than Portland (AQI 18 points higher). Both cities have acceptable air quality levels.

Boston vs Portland Air Quality Analysis

Based on the latest measurements, Boston has an AQI of 33 compared to Portland's AQI of 15. The World Health Organization (WHO) recommends annual PM2.5 levels below 15 µg/m³ and 24-hour levels below 45 µg/m³.

PM2.5 levels in both cities are within WHO guidelines. Outdoor activities can be enjoyed without air quality concerns.

Air quality can change rapidly due to weather patterns, traffic, and industrial activity. Check back hourly for the latest comparison between Boston and Portland.

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Boston Air Quality →

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Frequently Asked Questions

Which city has worse air quality today, Boston or Portland?

Boston currently has worse air quality with an AQI of 33 compared to Portland's AQI of 15. This data is updated hourly from government monitoring stations.

Is it safer to be in Boston or Portland right now?

Based on current AQI levels, Portland (AQI 15) has safer air quality than Boston (AQI 33). Both cities have acceptable air quality for outdoor activities.

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