What is the air quality trend in Petersburg?

Over the past 14 days, Petersburg had an average AQI of 62 based on station measurements. The worst day was 2026-07-17 with AQI 180.

How is Petersburg air quality measured?

Air quality in Petersburg 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 Petersburg, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

330h

PM2.5 Station

330h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	38	4–81	10.0 µg/m³	21h	3
2026-07-20	58	18–162	17.6 µg/m³	24h	3
2026-07-19	65	19–152	19.8 µg/m³	24h	4
2026-07-18	104	25–183	40.5 µg/m³	24h	4
2026-07-17	180	80–294	113.0 µg/m³	24h	4
2026-07-16	104	26–211	49.8 µg/m³	24h	4
2026-07-15	60	30–177	20.0 µg/m³	24h	4
2026-07-14	35	14–65	8.5 µg/m³	24h	4
2026-07-13	32	17–61	7.8 µg/m³	23h	4
2026-07-12	43	3–155	11.5 µg/m³	24h	4
2026-07-11	36	10–69	8.9 µg/m³	24h	3
2026-07-10	58	11–331	28.8 µg/m³	24h	3
2026-07-09	34	17–49	8.1 µg/m³	22h	4
2026-07-08	33	24–53	7.8 µg/m³	24h	5

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