What is the air quality trend in Columbia City?

Over the past 20 days, Columbia City had an average AQI of 15 based on station measurements. The worst day was with AQI .

How is Columbia City air quality measured?

Air quality in Columbia City 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 Columbia City, United States

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Trend

395h

PM2.5 Trend

395h · 22 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-16	6	6–6	1.5 µg/m³	1.2	1h	22
2026-04-15	8	4–13	1.9 µg/m³	2.0	24h	22
2026-04-14	6	3–10	1.4 µg/m³	0.7	24h	21
2026-04-13	16	6–35	3.9 µg/m³	4.3	17h	20
2026-04-12	33	15–52	7.8 µg/m³	8.8	24h	24
2026-04-11	25	12–35	6.1 µg/m³	6.8	24h	22
2026-04-10	26	13–34	6.2 µg/m³	6.2	24h	21
2026-04-09	20	14–28	4.8 µg/m³	4.6	16h	18
2026-04-08	20	13–29	4.7 µg/m³	5.3	10h	22
2026-04-07	16	10–20	3.7 µg/m³	5.0	24h	22
2026-04-06	25	13–35	5.9 µg/m³	7.8	17h	21
2026-04-04	18	7–25	4.4 µg/m³	4.0	16h	21
2026-04-03	7	5–12	1.8 µg/m³	2.1	24h	9
2026-04-02	7	5–10	1.8 µg/m³	1.1	23h	19
2026-04-01	11	7–14	2.6 µg/m³	2.7	22h	21
2026-03-31	13	6–19	3.0 µg/m³	2.3	23h	20
2026-03-30	15	5–40	3.7 µg/m³	2.8	11h	20
2026-03-29	13	9–18	3.1 µg/m³	2.9	24h	20
2026-03-28	13	8–20	3.1 µg/m³	3.0	23h	22
2026-03-27	13	3–24	3.2 µg/m³	2.0	24h	22

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