Current Air Quality in New York City: Latest AQI Data and Trends (2023)

The most recent full-year air quality assessment for New York City shows an annual Air Quality Index (AQI) of 53, placing the region in the Moderate category. This value, published by the EPA in 2024, summarizes data from monitoring stations across the New York-Newark-Jersey City metropolitan area during 2023. While real-time AQI readings fluctuate hourly, this annual figure provides the most stable benchmark for understanding long-term exposure and trends. The 2023 value represents a slight increase from the previous year, driven primarily by elevated fine particle pollution from wildfire smoke and typical urban emissions.

Current Figure

The latest verified annual AQI for the New York City metropolitan area is 53, based on the EPA’s Air Quality Index Report for 2023. This value is a composite index that reflects the highest sub-index among five criteria pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. In 2023, ozone and PM2.5 were the most frequent drivers of the daily AQI. The AQI scale runs from 0 to 500; values between 51 and 100 fall into the Moderate range, meaning air quality is acceptable but may pose a moderate health concern for a very small number of unusually sensitive individuals.

Metric	Latest Value	Reference Period	Status	Source
Annual Air Quality Index	53 (Moderate)	2023	Final	EPA Air Quality Index Report
Annual average PM2.5 concentration	7.5 µg/m³	2022	Final	NYC Community Air Survey (NYCCAS)

The annual AQI is calculated as the average of daily AQI values across all monitoring sites in the designated area. It is not a direct concentration but a normalized index designed to communicate health risk. The EPA designates this figure as final, meaning it has undergone quality assurance and will not be revised except in rare circumstances.

Measurement Date

The 2023 annual AQI value reflects measurements taken throughout the calendar year 2023 (January 1 to December 31). The EPA published the final report in 2024, though the exact month of release varies; historically, the Air Quality Index Report appears in the second quarter. Real-time AQI data, by contrast, is updated hourly on the AirNow.gov platform and reflects the most recent hour’s pollutant concentrations. The annual figure lags because it requires complete data validation, quality control, and aggregation across multiple monitors. Readers should note that the “current” air quality in a real-time sense may differ significantly from the annual average, especially during events like wildfire smoke intrusions or temperature inversions.

Previous Figure

The comparable annual AQI for the New York-Newark-Jersey City area in 2022 was 51, also in the Moderate category. The change from 2022 to 2023 is small but measurable:

• Absolute change: +2 AQI points
• Percentage change: ((53 − 51) ÷ 51) × 100 ≈ +3.9%

This increase is within the range of typical year-to-year variability and does not necessarily indicate a worsening long-term trend. The EPA notes that 2023 included several days with elevated PM2.5 due to Canadian wildfire smoke, which contributed to higher daily AQI values in June and July. Methodology remained consistent between the two years, so the comparison is valid.

Long-Term Trend

Over the past decade, air quality in the New York City region has generally improved, though annual AQI values fluctuate with weather patterns and emission sources. The table below shows annual AQI values from 2014 through 2023, based on EPA reports. The highest value in this period was 53 in 2023, while the lowest was 45 in 2020, a year marked by reduced traffic and industrial activity during the COVID-19 pandemic.

Year	Annual AQI	Annual Change	Notes
2014	48	—	Final
2015	50	+2	Final
2016	47	−3	Final
2017	49	+2	Final
2018	52	+3	Final
2019	50	−2	Final
2020	45	−5	Final; pandemic-related reductions
2021	48	+3	Final
2022	51	+3	Final
2023	53	+2	Final; influenced by wildfire smoke

The overall trend since 2014 is relatively flat, with a slight upward drift in the most recent years. However, concentrations of individual pollutants like nitrogen dioxide and sulfur dioxide have declined substantially over the same period, reflecting cleaner vehicles and power generation. The AQI’s sensitivity to ozone and PM2.5 means that hot summers and wildfire events can temporarily offset these gains.

Data Source

The primary source for the annual AQI is the U.S. Environmental Protection Agency’s Air Quality Index Report, part of the Air Trends series. The report compiles data from state, local, and tribal monitoring networks that meet EPA quality assurance standards. For New York City, monitors are operated by the New York State Department of Environmental Conservation (NYSDEC). Real-time AQI values are available on AirNow.gov, a multi-agency platform managed by the EPA. The NYCCAS, run by the NYC Department of Health and Mental Hygiene, provides hyperlocal PM2.5 data using a combination of reference-grade monitors and low-cost sensors.

• Organization: U.S. Environmental Protection Agency
• Dataset: Air Quality Index Report, 2023
• Release date: 2024 (exact month not specified in this article)
• Geographic coverage: New York-Newark-Jersey City, NY-NJ-PA Core Based Statistical Area
• Update frequency: Annual
• Access date: June 2025
• URL: https://www.epa.gov/air-trends/air-quality-index-report

The EPA is the authoritative source for national air quality trends because it sets the methods, quality standards, and the AQI itself. The NYCCAS supplements this with neighborhood-level detail, but its PM2.5 data is not directly comparable to the AQI without conversion.

How the Figure Is Measured

The AQI transforms raw pollutant concentrations into a single, easy-to-understand number. For each pollutant, the EPA defines breakpoints that map concentrations to an index value from 0 to 500. The formula for a given pollutant is:

AQI = ( (I_high - I_low) / (C_high - C_low) ) × (C - C_low) + I_low

where C is the observed concentration, C_low and C_high are the breakpoints that bracket C, and I_low and I_high are the corresponding AQI values. The overall daily AQI for a location is the maximum of the individual pollutant AQIs. The annual AQI reported by the EPA is the average of these daily maxima across the year.

Monitoring stations in the NYC area use federal reference or equivalent methods. For PM2.5, filter-based gravimetric samplers or continuous beta-attenuation monitors are common. Ozone is measured by ultraviolet photometry. Data undergo automated and manual quality checks before being included in the annual summary.

Why Yearly Values Fluctuate

Year-to-year changes in the annual AQI for New York City can be attributed to several factors:

• Meteorology: Hot, stagnant air promotes ozone formation; temperature inversions trap pollutants near the ground.
• Wildfire smoke: In 2023, smoke from Canadian wildfires caused multiple days with PM2.5 spikes, raising the annual average.
• Economic activity: Traffic, industrial output, and energy demand influence emissions. The 2020 dip coincided with pandemic lockdowns.
• Regulatory changes: Long-term emission reductions from cleaner vehicles and power plants have a gradual effect, but year-to-year noise often masks the trend.
• Sampling variability: Even with consistent monitoring, random variation in weather and emission patterns can cause small swings.

The EPA does not attribute the 2022–2023 increase to a single cause, but the wildfire smoke episodes are widely recognized as a major contributor. It is important not to interpret a one-year rise as a reversal of decades of air quality improvement.

Regional Variation

Within New York City, air quality is not uniform. The NYCCAS 2022 report (the latest available neighborhood-level data) shows that annual average PM2.5 concentrations vary by borough and even by block. The table below summarizes borough-level PM2.5 averages, which are a key component of the AQI.

Borough	Annual PM2.5 (µg/m³), 2022	Difference from Citywide Average (7.5 µg/m³)	Notes
Bronx	8.1	+0.6	Higher traffic density, industrial sources
Brooklyn	7.4	−0.1	Close to citywide average
Manhattan	7.2	−0.3	Dense urban core, but lower than expected due to building height and monitoring placement
Queens	7.0	−0.5	Proximity to airports and highways
Staten Island	6.8	−0.7	Least dense, more green space

These PM2.5 values are not directly equivalent to AQI, but they illustrate the intra-city disparities. The Bronx consistently shows the highest fine particle levels, linked to higher asthma hospitalization rates. The NYCCAS data is collected from about 100 monitoring sites across the five boroughs, using a combination of reference-grade and low-cost sensors, and is published approximately one year after the measurement period.

What the Number Does and Does Not Mean

The AQI is a health-based index, not a direct measure of pollution mass. An AQI of 53 (Moderate) means that air quality is acceptable, but for a very small number of people who are unusually sensitive to air pollution, there may be a moderate health concern. It does not mean that the air is unsafe for the general population. The index is designed to simplify complex pollutant data into actionable categories: Good (0–50), Moderate (51–100), Unhealthy for Sensitive Groups (101–150), Unhealthy (151–200), Very Unhealthy (201–300), and Hazardous (301–500).

Importantly, the annual AQI reflects the average of daily maximums, so it can mask short-term pollution spikes. A year with a few very high days and many clean days can have the same annual average as a year with consistently moderate pollution. The AQI also does not capture all air toxics, such as benzene or formaldehyde, which are monitored separately. Finally, the AQI is a regional metric; it may not represent conditions on a specific street corner.

Next Scheduled Update

The EPA has not published a confirmed date for the next Air Quality Index Report. Based on its usual release schedule, the 2024 annual AQI report is expected in spring or summer 2025. Real-time AQI data continues to be updated hourly on AirNow.gov. The NYCCAS typically releases its annual report in the fall of the following year; the 2023 NYCCAS data is anticipated in late 2024 or early 2025.

Downloadable Chart or Table

The following table provides the historical annual AQI data in a copyable format suitable for spreadsheets.

Year	Annual AQI	Unit	Geographic Scope	Status	Source	Notes
2014	48	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA
2015	50	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA
2016	47	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA
2017	49	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA
2018	52	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA
2019	50	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA
2020	45	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA	Pandemic-related reductions
2021	48	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA
2022	51	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA
2023	53	AQI	New York-Newark-Jersey City, NY-NJ-PA CBSA	Final	EPA	Influenced by wildfire smoke

Suggested CSV filename: nyc-annual-aqi-2014-2023.csv

Recommended chart type: Line chart

• X-axis: Year (2014–2023)
• Y-axis: Annual AQI (0–60)
• Suggested title: Annual Air Quality Index for New York City Metro Area, 2014–2023
• Source note: U.S. EPA Air Quality Index Report, accessed June 2025

Methodology and Source Notes

1. Primary dataset: U.S. Environmental Protection Agency, Air Quality Index Report, 2023. Published 2024. URL: https://www.epa.gov/air-trends/air-quality-index-report. Accessed June 2025.
2. Real-time AQI: AirNow.gov, a partnership of the EPA, NOAA, NPS, and state agencies. Data updated hourly. URL: https://www.airnow.gov.
3. Neighborhood PM2.5 data: NYC Department of Health and Mental Hygiene, New York City Community Air Survey (NYCCAS) 2022 Report. Published 2023. URL: https://www1.nyc.gov/site/doh/data/data-sets/air-quality-nyc-community-air-survey.page.
4. Methodology: AQI calculation follows 40 CFR Part 58, Appendix G. Annual AQI is the arithmetic mean of daily maximum AQI values across all monitoring sites in the CBSA.
5. Historical comparison: All years use consistent AQI breakpoints. No major methodology revisions affect the 2014–2023 trend.
6. Limitations: The annual AQI smooths out daily extremes. The CBSA includes parts of New Jersey and Pennsylvania, so it may not perfectly represent the five boroughs alone. PM2.5 data from NYCCAS uses a different spatial scale and sensor mix.

The latest annual AQI of 53 confirms that New York City’s air quality remains in the Moderate range, with a slight uptick in 2023 largely attributable to wildfire smoke. While the long-term trend shows no dramatic deterioration, the data underscores the influence of external events on urban air quality. Real-time monitoring and hyperlocal surveys continue to provide essential detail for public health guidance. The next comprehensive annual report is expected in mid-2025.

Frequently Asked Questions

What is the current air quality in New York City?

The most recent full-year data (2023) shows an annual Air Quality Index of 53, which is in the Moderate category. Real-time AQI values are updated hourly on AirNow.gov and can vary from Good to Unhealthy depending on weather and pollution events.

How is the Air Quality Index (AQI) calculated?

The AQI converts concentrations of five major pollutants—ground-level ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide—into a single number on a 0–500 scale. The daily AQI is the highest sub-index among those pollutants, and the annual AQI is the average of daily values across a year.

What are the main pollutants affecting New York City's air quality?

Ozone and fine particulate matter (PM2.5) are the primary drivers of the AQI in NYC. Ozone forms on hot, sunny days from vehicle and industrial emissions, while PM2.5 comes from combustion sources, including traffic, power plants, and wildfires.

How does NYC air quality compare to other U.S. cities?

New York City's annual AQI is typically in the Moderate range, similar to other large Northeastern metros like Boston and Philadelphia. It generally fares better than cities with heavy industrial or wildfire exposure, such as Los Angeles or Houston, but worse than many smaller cities with lower population density.

When will the next air quality report for NYC be released?

The EPA's annual Air Quality Index Report for 2024 is expected in spring or summer 2025. The NYC Community Air Survey (NYCCAS) 2023 report is anticipated in late 2024 or early 2025. Real-time data remains available continuously on AirNow.gov.