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)
33
Good
Hempstead, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.71 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.54 μg/m³
0
55
155
255
425
605+
35.86 ppb
0
55
71
86
201
201+
1.40 ppb
0
36
76
186
605
1005+
2.32 ppb
0
54
101
361
1250
2050+
0.16 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 33
Good
3.70μg/m³
PM2.5
12.45μg/m³
PM10
35.87ppb
O3
1.40ppb
SO2
2.31ppb
NO2
0.16ppm
CO
AQI 33
Good
3.92μg/m³
PM2.5
13.30μg/m³
PM10
35.82ppb
O3
1.43ppb
SO2
2.35ppb
NO2
0.16ppm
CO
AQI 33
Good
3.92μg/m³
PM2.5
13.30μg/m³
PM10
35.82ppb
O3
1.43ppb
SO2
2.35ppb
NO2
0.16ppm
CO
AQI 33
Good
3.71μg/m³
PM2.5
12.63μg/m³
PM10
35.77ppb
O3
1.40ppb
SO2
2.31ppb
NO2
0.16ppm
CO
AQI 33
Good
3.89μg/m³
PM2.5
11.25μg/m³
PM10
35.77ppb
O3
1.39ppb
SO2
2.30ppb
NO2
0.16ppm
CO
AQI 32
Good
3.62μg/m³
PM2.5
8.77μg/m³
PM10
34.68ppb
O3
1.37ppb
SO2
2.28ppb
NO2
0.16ppm
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 06:00:00 on 2026-06-19.
The best air quality in Hempstead, New York was recorded at 03:00:00 on 2026-06-20.
The real-time air quality index in Hempstead, New York is 33, 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 3.707 μg/m3.
The current PM10 levels in Hempstead, New York are 12.543 μg/m3.
The current carbon monoxide (CO) level in Hempstead, New York is 0.16 ppm.
The current sulfur dioxide (SO2) levels in Hempstead, New York are 1.4 ppb.
The current ozone (O3) levels at Hempstead, New York is 35.864 ppm.
The current nitrogen dioxide (NO2) levels at Hempstead, New York is 2.318 ppb.
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