EnviroNearby

Cape May County, New Jersey air quality history

Daily Air Quality Index summaries from EPA monitors in Cape May, New Jersey, 1980–1982.

67%
Good days in 1982
45
Median daily AQI, 1982
36
Days above 100 in 1982
255
Days with an AQI in 1982 (of 365)

In 1982, EPA reported a daily Air Quality Index (AQI) for Cape May, New Jersey on 255 days. 170 of those days (67%) were in the Good range, and the median daily AQI was 45. That median is about the same as the typical monitored county in New Jersey (median 45 across 17 counties), and higher than the typical monitored U.S. county (39). The main pollutant was ozone on 255 days.

EPA did not report an AQI for every day of 1982 here (255 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

The most recent year with data for this county is 1982; EPA's files for 1983–2025 contain no row for it, which usually means its monitors stopped reporting.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Share of monitored days in each AQI category, by year0%25%50%75%100%1980: Good 129 of 219 days1980: Moderate 38 of 219 days1980: Unhealthy for Sensitive Groups 32 of 219 days1980: Unhealthy 15 of 219 days1980: Very Unhealthy 5 of 219 days19801981: Good 213 of 314 days1981: Moderate 44 of 314 days1981: Unhealthy for Sensitive Groups 35 of 314 days1981: Unhealthy 15 of 314 days1981: Very Unhealthy 7 of 314 days19811982: Good 170 of 255 days1982: Moderate 49 of 255 days1982: Unhealthy for Sensitive Groups 30 of 255 days1982: Unhealthy 6 of 255 days1982
  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median and 90th-percentile daily AQI, by year0501001501980: 90th percentile AQI 1471981: 90th percentile AQI 1261982: 90th percentile AQI 1081980: Median AQI 441981: Median AQI 401982: Median AQI 45198019811982
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 1982

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

PollutantDays as main pollutantShare of monitored days
Ozone255100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
1982255170493060045108192Ozone
19813142134435157040126230Ozone
19802191293832155044147219Ozone

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

Counties in New Jersey with a similar median AQI in 1982

All monitored counties in New Jersey

Source: U.S. EPA AirData, “Annual AQI by County” files for 1980–1982 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem