Stay updated with real-time air quality in Hays, Kansas 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)
27
Good
Hays, Kansas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.47 μg/m³
0
55
155
255
425
605+
29.41 ppb
0
55
71
86
201
201+
0.62 ppb
0
36
76
186
605
1005+
2.53 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hays, Kansas
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AQI 33
Good
5.67μg/m³
PM2.5
24.22μg/m³
PM10
32.35ppb
O3
0.09ppb
SO2
0.52ppb
NO2
0.13ppm
CO
AQI 27
Good
4.20μg/m³
PM2.5
29.00μg/m³
PM10
25.27ppb
O3
0.64ppb
SO2
2.52ppb
NO2
0.28ppm
CO
AQI 33
Good
5.82μg/m³
PM2.5
25.10μg/m³
PM10
27.67ppb
O3
0.04ppb
SO2
0.77ppb
NO2
0.16ppm
CO
AQI 52
Moderate
9.76μg/m³
PM2.5
22.07μg/m³
PM10
25.55ppb
O3
0.62ppb
SO2
2.65ppb
NO2
0.29ppm
CO
AQI 44
Good
8.32μg/m³
PM2.5
23.05μg/m³
PM10
24.39ppb
O3
0.60ppb
SO2
2.63ppb
NO2
0.28ppm
CO
AQI 44
Good
7.70μg/m³
PM2.5
34.00μg/m³
PM10
27.27ppb
O3
0.08ppb
SO2
0.41ppb
NO2
0.13ppm
CO
Air quality and pollutant data for Kansas, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Hays, Kansas is updated every hour for accuracy.
In the past 24 hours, the air quality in Hays, Kansas was at its worst at 04:00:00 on 2026-03-10.
In the last 24 hours, the best air quality in Hays, Kansas was observed at 02:00:00 on 2026-03-11.
As of now, the AQI in Hays, Kansas is 27, indicating Good conditions.
Hays, Kansas air has the highest levels of O3.
Poor air quality in Hays, Kansas means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Hays, Kansas are currently 4.179 μg/m3.
The PM10 concentration in Hays, Kansas is 11.474 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hays, Kansas is 0.266 ppm.
Currently, Hays, Kansas has a sulfur dioxide (SO2) concentration of 0.616 ppb.
The current ozone (O3) level in Hays, Kansas at the moment is 29.412 ppm.
Nitrogen dioxide (NO2) level in Hays, Kansas at the moment is 2.531 ppb.
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