Casalmaggiore vs San Pietro Vernotico AQI Comparison

Side-by-side OpenAQ-derived air quality comparison for Casalmaggiore and San Pietro Vernotico. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.

Lower average AQI: San Pietro Vernotico (26-pt gap)PM2.5: Casalmaggiore 54.5 ug/m3 · San Pietro Vernotico 98.2 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-11-29–2024-12-31 and 2024-01-01–2024-12-31.

Compare two cities

City A

City B

Casalmaggiore vs San Pietro Vernotico

Casalmaggiore

Lombardy, Italy

138

PM2.5: 54.5 ug/m3
PM10: 62.9 ug/m3
Worst month: December
Trend: n/a

EPA category: Unhealthy for Sensitive Groups

San Pietro Vernotico

Puglia, Italy

112

PM2.5: 98.2 ug/m3
PM10: n/a ug/m3
Worst month: December
Trend: n/a

EPA category: Unhealthy for Sensitive Groups

Lower average AQI in this selected period: San Pietro Vernotico. Values are historical OpenAQ-derived city summaries, not live readings.

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Casalmaggiore

137

San Pietro Vernotico

122

186

148

136

107

134

187

What this comparison measures

Average EPA AQI — city-level daily AQI values averaged across the OpenAQ coverage window.
PM2.5 and PM10 — mapped monitor concentrations aggregated to daily city averages.
Seasonality — worst and cleanest months from the monthly city rollups.
Trend — difference between the earliest and latest yearly AQI average in this build.