ID: 1249

AQSQID: 330150014

Site Name: Portsmouth

Added: April 21, 2020, 6:24 p.m.

Updated: July 30, 2021, 6:54 a.m.

Location: Portsmouth (Downtown), NH

Reporting: True, Located: True

Current AQI: 28.0

Portsmouth (Downtown) NH, US: 43.075371, -70.748017

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 30, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 8.0 μg/m3 (8) 3.6 μg/m3 (16) 28.0
 
July 30, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 21.0 μg/m3 (20) 9.7 μg/m3 (41) 41.0
 
July 30, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 18.0 μg/m3 (17) 8.9 μg/m3 (38) 38.0
 
July 30, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 16.0 μg/m3 (15) 7.6 μg/m3 (32) 32.0
 
July 30, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 15.0 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
July 30, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A 12.0 μg/m3 (12) 6.1 μg/m3 (26) 26.0
 
July 29, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A 12.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
July 29, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 12.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
July 29, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 13.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
July 29, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 17.0 μg/m3 (16) 8.9 μg/m3 (38) 38.0
 
July 29, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 18.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 15.0 μg/m3 (14) 7.8 μg/m3 (33) 33.0
 
July 29, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 16.0 μg/m3 (15) 8.9 μg/m3 (38) 38.0
 
July 29, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 16.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
July 29, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 16.0 μg/m3 (15) 9.2 μg/m3 (39) 39.0
 
July 29, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 18.0 μg/m3 (17) 10.1 μg/m3 (43) 43.0
 
July 29, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A 20.0 μg/m3 (19) 7.7 μg/m3 (33) 33.0
 
July 29, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 4.0 ppb (4) N/A 20.0 μg/m3 (19) 6.7 μg/m3 (28) 28.0
 
July 29, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) N/A 19.0 μg/m3 (18) 7.0 μg/m3 (30) 30.0
 
July 29, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 0.0 ppb (0) N/A 17.0 μg/m3 (16) 6.9 μg/m3 (29) 29.0
 
July 29, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 17.0 μg/m3 (16) 6.8 μg/m3 (29) 29.0
 
July 29, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 0.0 ppb (0) N/A 19.0 μg/m3 (18) 7.0 μg/m3 (30) 30.0
 
July 29, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) N/A 16.0 μg/m3 (15) 6.9 μg/m3 (29) 29.0
 
July 29, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 2.0 ppb (2) N/A 14.0 μg/m3 (13) 7.0 μg/m3 (30) 30.0
 
July 29, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 13.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
July 29, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 7.0 ppb (7) N/A 12.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
July 29, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A 11.0 μg/m3 (11) 5.8 μg/m3 (25) 25.0
 
July 29, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A 10.0 μg/m3 (10) 5.1 μg/m3 (22) 22.0
 
July 29, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A 10.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
July 29, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 12.0 μg/m3 (12) 4.8 μg/m3 (20) 21.0
 
July 28, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 12.0 μg/m3 (12) 4.5 μg/m3 (19) 24.0
 
July 28, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 10.0 μg/m3 (10) 4.5 μg/m3 (19) 25.0
 
July 28, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 12.0 μg/m3 (12) 4.5 μg/m3 (19) 25.0
 
July 28, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 10.0 μg/m3 (10) 4.3 μg/m3 (18) 26.0
 
July 28, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 10.0 μg/m3 (10) 4.3 μg/m3 (18) 25.0
 
July 28, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 9.0 μg/m3 (9) 4.3 μg/m3 (18) 25.0
 
July 28, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 9.0 μg/m3 (9) 4.5 μg/m3 (19) 23.0
 
July 28, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 9.0 μg/m3 (9) 4.4 μg/m3 (19) 23.0
 
July 28, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 9.0 μg/m3 (9) 5.0 μg/m3 (21) 22.0
 
July 28, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 10.0 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
July 28, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 14.0 ppb (13) N/A 15.0 μg/m3 (14) 8.2 μg/m3 (35) 35.0
 
July 28, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) N/A 16.0 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 14.0 ppb (13) N/A 17.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
July 28, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A 20.0 μg/m3 (19) 11.4 μg/m3 (48) 48.0
 
July 28, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A 22.0 μg/m3 (21) 13.2 μg/m3 (54) 54.0
 
July 28, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 14.0 ppb (13) N/A 20.0 μg/m3 (19) 12.3 μg/m3 (52) 52.0
 
July 28, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A 20.0 μg/m3 (19) 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A 22.0 μg/m3 (21) 15.0 μg/m3 (58) 58.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A 23.0 μg/m3 (22) 15.8 μg/m3 (59) 59.0
 
July 28, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 15.0 ppb (14) N/A 21.0 μg/m3 (20) 15.2 μg/m3 (58) 58.0
 
July 28, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A 21.0 μg/m3 (20) 15.0 μg/m3 (58) 58.0
 
July 28, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 15.0 ppb (14) N/A 19.0 μg/m3 (18) 14.2 μg/m3 (56) 56.0
 
July 28, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A 19.0 μg/m3 (18) 14.5 μg/m3 (57) 57.0
 
July 28, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A 24.0 μg/m3 (23) 18.0 μg/m3 (64) 64.0
 
July 27, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 40.0 μg/m3 (38) 24.1 μg/m3 (77) 77.0
 
July 27, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A 32.0 μg/m3 (30) 23.2 μg/m3 (75) 75.0
 
July 27, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 47.0 ppb (44) N/A 33.0 μg/m3 (31) 24.0 μg/m3 (77) 77.0
 
July 27, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 45.0 ppb (42) N/A 46.0 μg/m3 (43) 32.0 μg/m3 (93) 93.0
 
July 27, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 58.0 μg/m3 (53) 39.3 μg/m3 (111) 111.0
 
July 27, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 51.0 μg/m3 (48) 35.8 μg/m3 (102) 102.0
 
July 27, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 47.0 μg/m3 (44) 30.5 μg/m3 (90) 90.0
 
July 27, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 40.0 μg/m3 (38) 27.7 μg/m3 (84) 84.0
 
July 27, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 33.0 μg/m3 (31) 24.2 μg/m3 (77) 77.0
 
July 27, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 32.0 μg/m3 (30) 21.6 μg/m3 (71) 71.0
 
July 27, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 33.0 μg/m3 (31) 22.3 μg/m3 (73) 73.0
 
July 27, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 36.0 μg/m3 (34) 24.6 μg/m3 (78) 78.0
 
July 27, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A 37.0 μg/m3 (35) 26.5 μg/m3 (82) 82.0
 
July 27, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A 45.0 μg/m3 (42) 29.6 μg/m3 (88) 88.0
 
July 27, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A 43.0 μg/m3 (40) 33.1 μg/m3 (96) 96.0
 
July 27, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 53.0 μg/m3 (50) 40.1 μg/m3 (113) 113.0
 
July 27, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 64.0 μg/m3 (56) 50.5 μg/m3 (138) 138.0
 
July 27, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A 78.0 μg/m3 (63) 64.3 μg/m3 (156) 156.0
 
July 27, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 15.0 ppb (14) N/A 92.0 μg/m3 (70) 75.7 μg/m3 (162) 162.0
 
July 27, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A 95.0 μg/m3 (71) 78.2 μg/m3 (163) 163.0
 
July 27, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 8.0 ppb (8) N/A 96.0 μg/m3 (72) 78.4 μg/m3 (163) 163.0
 
July 27, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A 94.0 μg/m3 (71) 77.9 μg/m3 (163) 163.0
 
July 27, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A 96.0 μg/m3 (72) 79.5 μg/m3 (164) 164.0
 
July 27, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A 94.0 μg/m3 (71) 78.9 μg/m3 (164) 164.0
 
July 26, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (28) N/A 96.0 μg/m3 (72) 79.3 μg/m3 (164) 164.0
 
July 26, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 94.0 μg/m3 (71) 77.4 μg/m3 (163) 163.0
 
July 26, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 83.0 μg/m3 (65) 65.0 μg/m3 (156) 156.0
 
July 26, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (36) N/A 103.0 μg/m3 (75) 75.8 μg/m3 (162) 162.0
 
July 26, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (36) N/A 93.0 μg/m3 (70) 71.2 μg/m3 (160) 160.0
 
July 26, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 84.0 μg/m3 (66) 63.0 μg/m3 (155) 155.0
 
July 26, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 77.0 μg/m3 (62) 56.2 μg/m3 (152) 152.0
 
July 26, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 61.0 μg/m3 (54) 43.7 μg/m3 (122) 122.0
 
July 26, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 57.0 μg/m3 (52) 39.3 μg/m3 (111) 111.0
 
July 26, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 47.0 μg/m3 (44) 36.8 μg/m3 (105) 105.0
 
July 26, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 41.0 μg/m3 (38) 31.6 μg/m3 (93) 93.0
 
July 26, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A 28.0 μg/m3 (26) 19.5 μg/m3 (67) 67.0
 
July 26, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 4.0 ppb (4) N/A 16.0 μg/m3 (15) 12.6 μg/m3 (53) 53.0
 
July 26, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) N/A 17.0 μg/m3 (16) 13.3 μg/m3 (54) 54.0
 
July 26, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 4.0 ppb (4) N/A 22.0 μg/m3 (21) 15.6 μg/m3 (59) 59.0
 
July 26, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A 20.0 μg/m3 (19) 14.2 μg/m3 (56) 56.0
 
July 26, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A 20.0 μg/m3 (19) 13.1 μg/m3 (54) 54.0
 
July 26, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 6.0 ppb (6) N/A 20.0 μg/m3 (19) 12.7 μg/m3 (53) 53.0
 
July 26, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 7.0 ppb (7) N/A 20.0 μg/m3 (19) 13.0 μg/m3 (53) 53.0
 
July 26, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A 19.0 μg/m3 (18) 12.4 μg/m3 (52) 52.0
 
July 26, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 14.0 ppb (13) N/A 19.0 μg/m3 (18) 12.3 μg/m3 (52) 52.0
 
July 26, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A 18.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A 18.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
July 26, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 18.0 μg/m3 (17) 12.1 μg/m3 (51) 51.0
 
July 25, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 17.0 μg/m3 (16) 11.8 μg/m3 (50) 50.0
 
July 25, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 16.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 15.0 μg/m3 (14) 10.4 μg/m3 (44) 44.0
 
July 25, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 15.0 μg/m3 (14) 10.7 μg/m3 (45) 45.0
 
July 25, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 16.0 μg/m3 (15) 10.9 μg/m3 (46) 46.0
 
July 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 15.0 μg/m3 (14) 11.1 μg/m3 (47) 47.0
 
July 25, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 14.0 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 16.0 μg/m3 (15) 11.5 μg/m3 (48) 48.0
 
July 25, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 15.0 μg/m3 (14) 11.2 μg/m3 (47) 47.0
 
July 25, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 14.0 μg/m3 (13) 10.2 μg/m3 (43) 43.0
 
July 25, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 13.0 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
July 25, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 14.0 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
July 25, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 15.0 μg/m3 (14) 10.8 μg/m3 (46) 46.0
 
July 25, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 16.0 μg/m3 (15) 11.6 μg/m3 (49) 49.0
 
July 25, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 16.0 μg/m3 (15) 11.7 μg/m3 (49) 49.0
 
July 25, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 17.0 μg/m3 (16) 11.5 μg/m3 (48) 48.0
 
July 25, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 15.0 μg/m3 (14) 10.6 μg/m3 (45) 45.0
 
July 25, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 8.4 μg/m3 (36) 36.0
 
July 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 11.0 μg/m3 (11) 6.5 μg/m3 (28) 28.0
 
July 25, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 11.0 μg/m3 (11) 6.2 μg/m3 (26) 26.0
 
July 25, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 12.0 μg/m3 (12) 6.7 μg/m3 (28) 28.0
 
July 25, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 9.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 9.0 μg/m3 (9) 5.0 μg/m3 (21) 25.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 9.0 μg/m3 (9) 4.8 μg/m3 (20) 25.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 11.0 μg/m3 (11) 4.6 μg/m3 (20) 29.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 12.0 μg/m3 (12) 4.6 μg/m3 (20) 29.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 11.0 μg/m3 (11) 5.1 μg/m3 (22) 29.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 11.0 μg/m3 (11) 5.6 μg/m3 (24) 29.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 11.0 μg/m3 (11) 5.9 μg/m3 (25) 28.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 12.0 μg/m3 (12) 5.8 μg/m3 (25) 28.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 12.0 μg/m3 (12) 5.8 μg/m3 (25) 26.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 11.0 μg/m3 (11) 5.5 μg/m3 (23) 27.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 12.0 μg/m3 (12) 5.7 μg/m3 (24) 25.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 14.0 μg/m3 (13) 5.5 μg/m3 (23) 23.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A 13.0 μg/m3 (13) 5.7 μg/m3 (24) 24.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A 11.0 μg/m3 (11) 6.2 μg/m3 (26) 26.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A 13.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
July 24, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 8.0 ppb (8) N/A 17.0 μg/m3 (16) 7.2 μg/m3 (31) 31.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 7.0 ppb (7) N/A 15.0 μg/m3 (14) 6.4 μg/m3 (27) 27.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A 12.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) N/A 11.0 μg/m3 (11) 5.9 μg/m3 (25) 25.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A 11.0 μg/m3 (11) 5.7 μg/m3 (24) 24.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A 12.0 μg/m3 (12) 5.7 μg/m3 (24) 24.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 13.0 μg/m3 (13) 6.2 μg/m3 (26) 26.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 12.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 12.0 μg/m3 (12) 6.8 μg/m3 (29) 29.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A 13.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A 15.0 μg/m3 (14) 8.5 μg/m3 (36) 36.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 13.0 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 13.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 13.0 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 20.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 25.0 μg/m3 (24) 10.8 μg/m3 (46) 46.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 15.0 μg/m3 (14) 7.9 μg/m3 (33) 33.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 17.0 μg/m3 (16) 8.3 μg/m3 (35) 35.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 18.0 μg/m3 (17) 8.1 μg/m3 (34) 34.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 16.0 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 17.0 μg/m3 (16) 8.7 μg/m3 (37) 37.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 20.0 ppb (19) N/A 19.0 μg/m3 (18) 9.2 μg/m3 (39) 39.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 14.0 ppb (13) N/A 20.0 μg/m3 (19) 9.5 μg/m3 (40) 40.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 11.0 ppb (11) N/A 26.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 6.0 ppb (6) N/A 24.0 μg/m3 (23) 9.5 μg/m3 (40) 40.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A 20.0 μg/m3 (19) 8.8 μg/m3 (37) 37.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 8.0 ppb (8) N/A 25.0 μg/m3 (24) 9.6 μg/m3 (40) 40.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A 20.0 μg/m3 (19) 9.1 μg/m3 (38) 38.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A 19.0 μg/m3 (18) 9.2 μg/m3 (39) 39.0