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)
92
Moderate
Hempstead, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
31.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
102.19 μg/m³
0
55
155
255
425
605+
13.63 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
27.06 ppb
0
54
101
361
1250
2050+
0.42 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 75
Moderate
22.43μg/m³
PM2.5
104.15μg/m³
PM10
20.74ppb
O3
0.64ppb
SO2
31.39ppb
NO2
0.45ppm
CO
AQI 82
Moderate
26.03μg/m³
PM2.5
102.65μg/m³
PM10
19.56ppb
O3
0.77ppb
SO2
31.83ppb
NO2
0.45ppm
CO
AQI 82
Moderate
26.03μg/m³
PM2.5
102.65μg/m³
PM10
19.56ppb
O3
0.77ppb
SO2
31.83ppb
NO2
0.45ppm
CO
AQI 68
Moderate
14.69μg/m³
PM2.5
90.07μg/m³
PM10
25.84ppb
O3
0.77ppb
SO2
25.03ppb
NO2
0.45ppm
CO
AQI 75
Moderate
22.41μg/m³
PM2.5
104.14μg/m³
PM10
17.98ppb
O3
0.64ppb
SO2
33.31ppb
NO2
0.44ppm
CO
AQI 58
Moderate
12.74μg/m³
PM2.5
55.44μg/m³
PM10
28.49ppb
O3
0.76ppb
SO2
24.80ppb
NO2
0.45ppm
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 04:00:00 on 2026-02-03.
The best air quality in Hempstead, New York was recorded at 04:00:00 on 2026-02-03.
The real-time air quality index in Hempstead, New York is 92, currently categorized as Moderate.
The most common pollutant in Hempstead, New York is PM2.5.
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 31.243 μg/m3.
The current PM10 levels in Hempstead, New York are 102.186 μg/m3.
The current carbon monoxide (CO) level in Hempstead, New York is 0.423 ppm.
The current sulfur dioxide (SO2) levels in Hempstead, New York are 0.565 ppb.
The current ozone (O3) levels at Hempstead, New York is 13.631 ppm.
The current nitrogen dioxide (NO2) levels at Hempstead, New York is 27.057 ppb.
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