Stay updated with real-time air quality in Ulster, New York featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
23
Good
Ulster, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.76 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.19 μg/m³
0
55
155
255
425
605+
25.13 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
4.87 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Ulster, New York
Ulster, New York
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AQI 22
Good
3.78μg/m³
PM2.5
16.14μg/m³
PM10
11.62ppb
O3
0.59ppb
SO2
7.03ppb
NO2
0.26ppm
CO
AQI 22
Good
4.31μg/m³
PM2.5
12.70μg/m³
PM10
11.84ppb
O3
0.57ppb
SO2
6.95ppb
NO2
0.20ppm
CO
AQI 22
Good
4.34μg/m³
PM2.5
13.00μg/m³
PM10
13.70ppb
O3
0.57ppb
SO2
6.91ppb
NO2
0.21ppm
CO
AQI 27
Good
4.67μg/m³
PM2.5
17.32μg/m³
PM10
8.79ppb
O3
0.60ppb
SO2
7.57ppb
NO2
0.25ppm
CO
AQI 27
Good
4.65μg/m³
PM2.5
14.72μg/m³
PM10
10.34ppb
O3
0.63ppb
SO2
7.73ppb
NO2
0.27ppm
CO
AQI 38
Good
6.98μg/m³
PM2.5
31.63μg/m³
PM10
10.12ppb
O3
0.63ppb
SO2
7.49ppb
NO2
0.27ppm
CO
Air quality measurements for New York, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Ulster, New York is updated on an hourly basis.
The worst air quality in Ulster, New York was recorded at 03:00:00 on 2026-08-09.
The best air quality in Ulster, New York was recorded at 01:00:00 on 2026-08-10.
The real-time air quality index in Ulster, New York is 22, currently categorized as Good.
The most common pollutant in Ulster, New York is PM2.5.
If the air quality in Ulster, New York is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Ulster, New York at present are 4.321 μg/m3.
The current PM10 levels in Ulster, New York are 15.937 μg/m3.
The current carbon monoxide (CO) level in Ulster, New York is 0.257 ppm.
The current sulfur dioxide (SO2) levels in Ulster, New York are 0.747 ppb.
The current ozone (O3) levels at Ulster, New York is 21.822 ppm.
The current nitrogen dioxide (NO2) levels at Ulster, New York is 3.276 ppb.
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