EnviroNearby

Broome County, New York air quality history

Daily Air Quality Index summaries from EPA monitors in Broome, New York, 1980–2003.

93%
Good days in 1983
25
Median daily AQI, 1983
2
Days above 100 in 1983
150
Days with an AQI in 1983 (of 365)

In 1983, EPA reported a daily Air Quality Index (AQI) for Broome, New York on 150 days. 139 of those days (93%) were in the Good range, and the median daily AQI was 25. That median is lower than the typical monitored county in New York (median 31 across 21 counties), and lower than the typical monitored U.S. county (40). The main pollutant was ozone on 83 days.

EPA did not report an AQI for every day of 1983 here (150 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 2003; EPA's files for 2004–2025 contain no row for it, which usually means its monitors stopped reporting.

Years with fewer than 120 monitored days (1997, 1998, 2000, 2001, 2002, 2003…) are shown in the table but left out of comparisons and trend statements.

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 307 of 363 days1980: Moderate 39 of 363 days1980: Unhealthy for Sensitive Groups 10 of 363 days1980: Unhealthy 7 of 363 days19801981: Good 318 of 363 days1981: Moderate 30 of 363 days1981: Unhealthy for Sensitive Groups 12 of 363 days1981: Unhealthy 3 of 363 days1982: Good 325 of 365 days1982: Moderate 31 of 365 days1982: Unhealthy for Sensitive Groups 8 of 365 days1982: Very Unhealthy 1 of 365 days19821983: Good 139 of 150 days1983: Moderate 9 of 150 days1983: Unhealthy for Sensitive Groups 2 of 150 days1990: Good 30 of 30 days19901991: Good 58 of 59 days1991: Moderate 1 of 59 days1992: Good 61 of 61 days19921993: Good 58 of 61 days1993: Moderate 3 of 61 days1994: Good 55 of 55 days19941995: Good 57 of 57 days1996: Good 53 of 53 days19961997: Good 59 of 59 days1998: Good 54 of 54 days19982000: Good 45 of 101 days2000: Moderate 56 of 101 days2001: Good 60 of 109 days2001: Moderate 48 of 109 days2001: Unhealthy for Sensitive Groups 1 of 109 days20012002: Good 52 of 110 days2002: Moderate 53 of 110 days2002: Unhealthy for Sensitive Groups 5 of 110 days2003: Good 13 of 28 days2003: Moderate 15 of 28 days2003
  • 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 year0501001980: 90th percentile AQI 711981: 90th percentile AQI 641982: 90th percentile AQI 541983: 90th percentile AQI 481990: 90th percentile AQI 441991: 90th percentile AQI 451992: 90th percentile AQI 361993: 90th percentile AQI 311994: 90th percentile AQI 311995: 90th percentile AQI 281996: 90th percentile AQI 261997: 90th percentile AQI 311998: 90th percentile AQI 332000: 90th percentile AQI 742001: 90th percentile AQI 752002: 90th percentile AQI 782003: 90th percentile AQI 671980: Median AQI 281981: Median AQI 271982: Median AQI 251983: Median AQI 251990: Median AQI 191991: Median AQI 211992: Median AQI 191993: Median AQI 171994: Median AQI 151995: Median AQI 181996: Median AQI 161997: Median AQI 141998: Median AQI 162000: Median AQI 522001: Median AQI 492002: Median AQI 522003: Median AQI 52198019821990199219941996199820012003
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 1983

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
Ozone8355%
Carbon monoxide (CO)6745%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
20032813150000526769PM2.5
2002110525350005278130PM2.5
2001109604810004975102PM2.5
200010145560000527492PM2.5
1998545400000163350PM10
1997595900000143149PM10
1996535300000162644PM10
1995575700000182845PM10
1994555500000153150PM10
1993615830000173159PM10
1992616100000193644PM10
1991595810000214551PM10
1990303000000194448PM10
1983150139920002548140Ozone
19823653253180102554201Ozone
198136331830123002764159Ozone
198036330739107002871177Ozone

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.

All monitored counties in New York

Source: U.S. EPA AirData, “Annual AQI by County” files for 1980–2003 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem