Springfield vs Cambridge Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, Cambridge, MA has cleaner air than Springfield, MA — AQI 23 (Good) vs 24 (Good), a gap of 1 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Springfield's reading is driven by O3 and Cambridge's by PM2.5.
Springfield, MA
Good
Cambridge, MA
Good
Summary
Cambridge has 1 points better air quality
Cambridge has an AQI of 23 compared to 24
Reduce Indoor Ozone in Springfield
Today's main pollutant in Springfield is ground-level ozone (AQI 24). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Compare activated-carbon purifiers (for gases & ozone):
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