Hourly Weather | Today Wednesday, March 18, 2026
Active Weather Warnings
Gainesville, Florida
9 AM
Cloudy Weather
39°
Feels Like 37°
0
Humidity: 60%
UV Index: 2
Wind: 7 mph
10 AM
Cloudy Weather
46°
Feels Like 46°
0
Humidity: 49%
UV Index: 3
Wind: 9 mph
11 AM
Cloudy Weather
54°
Feels Like 55°
0
Humidity: 40%
UV Index: 5
Wind: 9 mph
12 PM
Cloudy Weather
57°
Feels Like 63°
0
Humidity: 35%
UV Index: 7
Wind: 9 mph
1 PM
Cloudy Weather
61°
Feels Like 66°
0
Humidity: 31%
UV Index: 7
Wind: 9 mph
2 PM
Cloudy Weather
63°
Feels Like 68°
0
Humidity: 29%
UV Index: 7
Wind: 9 mph
3 PM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 28%
UV Index: 5
Wind: 9 mph
4 PM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 27%
UV Index: 3
Wind: 9 mph
5 PM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 28%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 31%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
61°
Feels Like 57°
0
Humidity: 35%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 42%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
55°
Feels Like 52°
0
Humidity: 48%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
52°
Feels Like 48°
0
Humidity: 54%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
50°
Feels Like 46°
0
Humidity: 60%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 AM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.55 µg/m³
  • PM10: 2.39 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 AM
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.73 µg/m³
  • PM10: 2.65 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.9 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 AM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.01 µg/m³
  • PM10: 3.01 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

12 PM
74 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.35 µg/m³
  • PM10: 3.37 µg/m³
  • O3: 0.062 ppm
  • NO2: 0.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

1 PM
80 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.74 µg/m³
  • PM10: 3.76 µg/m³
  • O3: 0.064 ppm
  • NO2: 0.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
85 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.13 µg/m³
  • PM10: 4.15 µg/m³
  • O3: 0.065 ppm
  • NO2: 0.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
91 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.4 µg/m³
  • PM10: 4.41 µg/m³
  • O3: 0.067 ppm
  • NO2: 0.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
94 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.47 µg/m³
  • PM10: 4.47 µg/m³
  • O3: 0.068 ppm
  • NO2: 0.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
95 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.51 µg/m³
  • PM10: 4.5 µg/m³
  • O3: 0.069 ppm
  • NO2: 0.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
98 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.54 µg/m³
  • PM10: 4.55 µg/m³
  • O3: 0.069 ppm
  • NO2: 0.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
96 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.51 µg/m³
  • PM10: 4.54 µg/m³
  • O3: 0.069 ppm
  • NO2: 0.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
94 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.49 µg/m³
  • PM10: 4.55 µg/m³
  • O3: 0.068 ppm
  • NO2: 0.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
93 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.56 µg/m³
  • PM10: 4.68 µg/m³
  • O3: 0.068 ppm
  • NO2: 0.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
90 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.75 µg/m³
  • PM10: 4.96 µg/m³
  • O3: 0.067 ppm
  • NO2: 0.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM
87 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.95 µg/m³
  • PM10: 5.28 µg/m³
  • O3: 0.066 ppm
  • NO2: 0.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

Weather Alerts and Warnings for Gainesville

Moderate Expected Likely

Freeze Warning

Freeze Warning issued March 17 at 8:13PM EDT until March 18 at 9:00AM EDT by NWS Jacksonville FL
Mar 18, 3:00 AM Mar 18, 9:00 AM
WHAT: Sub-freezing temperatures as low as 30 expected.

WHERE: Bradford, Central Marion, Eastern Alachua, Gilchrist,
Western Alachua, and Western Marion Counties.

WHEN: From 3 AM to 9 AM EDT Wednesday.

IMPACTS: Appropriate action should be taken to ensure tender
vegetation and outdoor pets have adequate protection from the cold
temperatures. Young children, the elderly and the homeless are
especially vulnerable to the cold. Take measures to protect them.
+ Read More
Take steps now to protect tender plants from the cold.
Updated: Mar 18, 7:48 AM Source: NWS Alert
Minor Expected Likely

Frost Advisory

Frost Advisory issued March 17 at 7:58AM EDT until March 18 at 9:00AM EDT by NWS Jacksonville FL
Mar 18, 4:00 AM Mar 18, 9:00 AM
WHAT: Temperatures as low as 31 will result in frost formation.

WHERE: Western Clay, Western Putnam, Bradford, Central Marion,
Eastern Alachua, Gilchrist, Western Alachua, and Western Marion
Counties.

WHEN: From 4 AM to 9 AM EDT Wednesday.

IMPACTS: Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
+ Read More
Take steps now to protect tender plants from the cold.
Updated: Mar 17, 12:16 PM Source: NWS Alert