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)
52
Moderate
Hays, Kansas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
57.84 μg/m³
0
55
155
255
425
605+
43.76 ppb
0
55
71
86
201
201+
0.78 ppb
0
36
76
186
605
1005+
1.95 ppb
0
54
101
361
1250
2050+
0.41 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hays, Kansas
Hays, Kansas
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AQI 37
Good
4.37μg/m³
PM2.5
19.34μg/m³
PM10
40.05ppb
O3
0.06ppb
SO2
1.40ppb
NO2
0.12ppm
CO
AQI 72
Moderate
6.30μg/m³
PM2.5
96.99μg/m³
PM10
42.77ppb
O3
0.81ppb
SO2
2.74ppb
NO2
0.45ppm
CO
AQI 44
Good
7.87μg/m³
PM2.5
34.59μg/m³
PM10
36.12ppb
O3
0.06ppb
SO2
1.29ppb
NO2
0.12ppm
CO
AQI 44
Good
8.41μg/m³
PM2.5
29.68μg/m³
PM10
33.90ppb
O3
0.77ppb
SO2
2.77ppb
NO2
0.43ppm
CO
AQI 44
Good
7.86μg/m³
PM2.5
23.15μg/m³
PM10
36.91ppb
O3
0.75ppb
SO2
2.63ppb
NO2
0.40ppm
CO
AQI 38
Good
6.70μg/m³
PM2.5
29.91μg/m³
PM10
37.17ppb
O3
0.06ppb
SO2
1.22ppb
NO2
0.11ppm
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 02:00:00 on 2026-04-24.
In the last 24 hours, the best air quality in Hays, Kansas was observed at 11:00:00 on 2026-04-23.
As of now, the AQI in Hays, Kansas is 52, indicating Moderate conditions.
Hays, Kansas air has the highest levels of PM10.
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 3.981 μg/m3.
The PM10 concentration in Hays, Kansas is 57.84 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hays, Kansas is 0.411 ppm.
Currently, Hays, Kansas has a sulfur dioxide (SO2) concentration of 0.781 ppb.
The current ozone (O3) level in Hays, Kansas at the moment is 43.755 ppm.
Nitrogen dioxide (NO2) level in Hays, Kansas at the moment is 1.947 ppb.
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