Stay updated with real-time air quality in Hempstead, 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)
38
Good
Hempstead, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.32 μg/m³
0
55
155
255
425
605+
40.57 ppb
0
55
71
86
201
201+
0.42 ppb
0
36
76
186
605
1005+
7.71 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hempstead, New York
Hempstead, New York
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AQI 36
Good
3.73μg/m³
PM2.5
15.68μg/m³
PM10
39.46ppb
O3
0.43ppb
SO2
7.95ppb
NO2
0.23ppm
CO
AQI 37
Good
5.15μg/m³
PM2.5
21.03μg/m³
PM10
39.66ppb
O3
0.45ppb
SO2
8.07ppb
NO2
0.24ppm
CO
AQI 37
Good
5.15μg/m³
PM2.5
21.03μg/m³
PM10
39.66ppb
O3
0.45ppb
SO2
8.07ppb
NO2
0.24ppm
CO
AQI 38
Good
4.81μg/m³
PM2.5
19.05μg/m³
PM10
41.12ppb
O3
0.41ppb
SO2
5.27ppb
NO2
0.24ppm
CO
AQI 36
Good
3.63μg/m³
PM2.5
12.96μg/m³
PM10
39.32ppb
O3
0.43ppb
SO2
7.63ppb
NO2
0.23ppm
CO
AQI 38
Good
5.20μg/m³
PM2.5
20.85μg/m³
PM10
40.77ppb
O3
0.39ppb
SO2
4.77ppb
NO2
0.24ppm
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 Hempstead, New York is updated on an hourly basis.
The worst air quality in Hempstead, New York was recorded at 10:00:00 on 2026-08-04.
The best air quality in Hempstead, New York was recorded at 07:00:00 on 2026-08-04.
The real-time air quality index in Hempstead, New York is 38, currently categorized as Good.
The most common pollutant in Hempstead, New York is O3.
If the air quality in Hempstead, New York is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Hempstead, New York at present are 5.147 μg/m3.
The current PM10 levels in Hempstead, New York are 25.315 μg/m3.
The current carbon monoxide (CO) level in Hempstead, New York is 0.237 ppm.
The current sulfur dioxide (SO2) levels in Hempstead, New York are 0.422 ppb.
The current ozone (O3) levels at Hempstead, New York is 40.568 ppm.
The current nitrogen dioxide (NO2) levels at Hempstead, New York is 7.713 ppb.
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