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)
44
Good
Hays, Kansas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.64 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.63 μg/m³
0
55
155
255
425
605+
29.75 ppb
0
55
71
86
201
201+
0.62 ppb
0
36
76
186
605
1005+
4.75 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Hays, Kansas
Hays, Kansas
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AQI 49
Good
9.20μg/m³
PM2.5
41.00μg/m³
PM10
25.83ppb
O3
0.39ppb
SO2
1.96ppb
NO2
0.15ppm
CO
AQI 33
Good
5.62μg/m³
PM2.5
24.00μg/m³
PM10
33.95ppb
O3
0.26ppb
SO2
1.39ppb
NO2
0.14ppm
CO
AQI 49
Good
8.87μg/m³
PM2.5
39.02μg/m³
PM10
23.71ppb
O3
0.37ppb
SO2
2.21ppb
NO2
0.15ppm
CO
AQI 44
Good
8.16μg/m³
PM2.5
23.42μg/m³
PM10
31.13ppb
O3
0.73ppb
SO2
4.39ppb
NO2
0.37ppm
CO
AQI 44
Good
8.00μg/m³
PM2.5
23.51μg/m³
PM10
30.25ppb
O3
0.70ppb
SO2
4.26ppb
NO2
0.36ppm
CO
AQI 27
Good
5.01μg/m³
PM2.5
22.00μg/m³
PM10
25.57ppb
O3
0.26ppb
SO2
1.58ppb
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 03:00:00 on 2026-09-07.
In the last 24 hours, the best air quality in Hays, Kansas was observed at 07:00:00 on 2026-09-06.
As of now, the AQI in Hays, Kansas is 44, indicating Good conditions.
Hays, Kansas air has the highest levels of PM2.5.
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 7.642 μg/m3.
The PM10 concentration in Hays, Kansas is 21.633 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hays, Kansas is 0.286 ppm.
Currently, Hays, Kansas has a sulfur dioxide (SO2) concentration of 0.624 ppb.
The current ozone (O3) level in Hays, Kansas at the moment is 29.751 ppm.
Nitrogen dioxide (NO2) level in Hays, Kansas at the moment is 4.751 ppb.
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