What is the air quality trend in Saint Paul?

Over the past 14 days, Saint Paul had an average AQI of 65 based on station measurements. The worst day was 2026-07-16 with AQI 244.

How is Saint Paul air quality measured?

Air quality in Saint Paul is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Saint Paul, United States

Name: Saint Paul Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Saint Paul, United States.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

319h

PM2.5 Station

319h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	58	31–72	15.9 µg/m³	23h	16
2026-07-20	69	28–106	21.6 µg/m³	24h	16
2026-07-19	93	58–137	31.5 µg/m³	24h	16
2026-07-18	61	45–75	17.0 µg/m³	23h	17
2026-07-17	73	49–133	22.5 µg/m³	24h	17
2026-07-16	244	29–339	193.4 µg/m³	24h	16
2026-07-15	54	35–153	15.2 µg/m³	22h	7
2026-07-14	42	19–62	10.2 µg/m³	23h	2
2026-07-13	38	27–55	9.2 µg/m³	21h	3
2026-07-12	35	20–43	8.5 µg/m³	20h	3
2026-07-11	39	22–50	9.3 µg/m³	22h	3
2026-07-10	38	23–91	9.5 µg/m³	22h	3
2026-07-09	36	23–47	8.6 µg/m³	23h	3
2026-07-08	36	20–66	8.7 µg/m³	24h	3

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