Air Quality Forecast Guidance for Havre, MT

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 48.55 N, longitude: 109.77 W.
Ozone concentrations are presented in parts per billion (PPB).
Public comments and suggestions are encouraged.

A FAQ page is available.
More information...
24Hr Maximum
Ending
Maximum 1 Hour Average Ozone
Concentration (PPB)*
Maximum 8 Hour Average Ozone
Concentration (PPB)*
Tomorrow
(Ending 10/19, 4Z)
31
29
*Due to grid interpolation methods, the maximum 1- and 8-hour ozone concentration values may have
values slightly higher or lower than those of the corresponding hourly ozone concentrations.

Ozone
Ending Time
1 Hour Average Ozone
Concentration (PPB)

12Z Model Run
8 Hour Average Ozone
Concentration (PPB)

12Z Model Run
Mon, 18 Oct  11 AM
22
10
Mon, 18 Oct  12 PM
25
11
Mon, 18 Oct  01 PM
28
14
Mon, 18 Oct  02 PM
30
17
Mon, 18 Oct  03 PM
31
20
Mon, 18 Oct  04 PM
30
23
Mon, 18 Oct  05 PM
30
26
Mon, 18 Oct   06 PM
29
28
Mon, 18 Oct   07 PM
28
29
Mon, 18 Oct   08 PM
27
29
Mon, 18 Oct   09 PM
27
29
Mon, 18 Oct   10 PM
25
28
Mon, 18 Oct   11 PM
22
27
Tue, 19 Oct   12 AM
19
26
Tue, 19 Oct   01 AM
17
24
Tue, 19 Oct   02 AM
15
23
Tue, 19 Oct   03 AM
15
21
Tue, 19 Oct   04 AM
14
19
Tue, 19 Oct   05 AM
12
17
Tue, 19 Oct   06 AM
10
16
Tue, 19 Oct   07 AM
9
14
Tue, 19 Oct   08 AM
9
13
Tue, 19 Oct   09 AM
13
12
Tue, 19 Oct   10 AM
17
12
Tue, 19 Oct   11 AM
19
13
Tue, 19 Oct   12 PM
22
14
Tue, 19 Oct   01 PM
24
15
Tue, 19 Oct   02 PM
26
17
Tue, 19 Oct   03 PM
28
20
Tue, 19 Oct   04 PM
29
22
Tue, 19 Oct   05 PM
29
24
Tue, 19 Oct   06 PM
29
26
Tue, 19 Oct   07 PM
28
27
Tue, 19 Oct   08 PM
26
27
Tue, 19 Oct   09 PM
24
27
Tue, 19 Oct   10 PM
22
27
Tue, 19 Oct   11 PM
19
26
Wed, 20 Oct   12 AM
17
24
Wed, 20 Oct   01 AM
16
22
Wed, 20 Oct   02 AM
15
21
Wed, 20 Oct   03 AM
14
19
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Mon, 18 Oct  11 AM
3
1
Mon, 18 Oct  12 PM
4
2
Mon, 18 Oct  01 PM
3
2
Mon, 18 Oct  02 PM
3
1
Mon, 18 Oct  03 PM
9
2
Mon, 18 Oct  04 PM
3
3
Mon, 18 Oct  05 PM
2
3
Mon, 18 Oct  06 PM
4
5
Mon, 18 Oct  07 PM
0
4
Mon, 18 Oct  08 PM
0
4
Mon, 18 Oct  09 PM
8
4
Mon, 18 Oct  10 PM
0
4
Mon, 18 Oct  11 PM
5
5
Tue, 19 Oct  12 AM
0
5
Tue, 19 Oct  01 AM
0
5
Tue, 19 Oct  02 AM
0
5
Tue, 19 Oct  03 AM
0
5
Tue, 19 Oct  04 AM
15
4
Tue, 19 Oct  05 AM
0
3
Tue, 19 Oct  06 AM
0
3
Tue, 19 Oct  07 AM
4
2
Tue, 19 Oct  08 AM
5
2
Tue, 19 Oct  09 AM
1
1
Tue, 19 Oct  10 AM
0
1
Tue, 19 Oct  11 AM
0
1
Tue, 19 Oct  12 PM
3
2
Tue, 19 Oct  01 PM
1
1
Tue, 19 Oct  02 PM
2
1
Tue, 19 Oct  03 PM
0
1
Tue, 19 Oct  04 PM
3
1
Tue, 19 Oct  05 PM
0
1
Tue, 19 Oct  06 PM
0
1
Tue, 19 Oct  07 PM
0
1
Tue, 19 Oct  08 PM
0
1
Tue, 19 Oct  09 PM
2
1
Tue, 19 Oct  10 PM
0
1
Tue, 19 Oct  11 PM
0
1

National Weather Service Air Quality Program Page
Environmental Protection Agency AirNow Forecast Page
Graphical Air Quality Forecast Guidance
FAQ


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