Boston vs Montreal

Live AQI Comparison

Updated 2h ago · Data from OpenAQ

Boston

United States

Good

PM2.58 µg/m³

PM10—

Montreal

Canada

Good

PM2.57.4 µg/m³

PM10—

Verdict

Boston currently has worse air quality than Montreal (AQI 2 points higher). Both cities have acceptable air quality levels.

Boston vs Montreal Air Quality Analysis

Based on the latest measurements, Boston has an AQI of 33 compared to Montreal's AQI of 31. 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 Montreal.

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Frequently Asked Questions

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

Boston currently has worse air quality with an AQI of 33 compared to Montreal's AQI of 31. This data is updated hourly from government monitoring stations.

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

Based on current AQI levels, Montreal (AQI 31) has safer air quality than Boston (AQI 33). Both cities have acceptable air quality for outdoor activities.

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